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node_modules/vue/src/compiler/codegen/events.js

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+/* @flow */
+
+const fnExpRE = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/
+const simplePathRE = /^\s*[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?']|\[".*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*\s*$/
+
+// keyCode aliases
+const keyCodes: { [key: string]: number | Array<number> } = {
+  esc: 27,
+  tab: 9,
+  enter: 13,
+  space: 32,
+  up: 38,
+  left: 37,
+  right: 39,
+  down: 40,
+  'delete': [8, 46]
+}
+
+// #4868: modifiers that prevent the execution of the listener
+// need to explicitly return null so that we can determine whether to remove
+// the listener for .once
+const genGuard = condition => `if(${condition})return null;`
+
+const modifierCode: { [key: string]: string } = {
+  stop: '$event.stopPropagation();',
+  prevent: '$event.preventDefault();',
+  self: genGuard(`$event.target !== $event.currentTarget`),
+  ctrl: genGuard(`!$event.ctrlKey`),
+  shift: genGuard(`!$event.shiftKey`),
+  alt: genGuard(`!$event.altKey`),
+  meta: genGuard(`!$event.metaKey`),
+  left: genGuard(`'button' in $event && $event.button !== 0`),
+  middle: genGuard(`'button' in $event && $event.button !== 1`),
+  right: genGuard(`'button' in $event && $event.button !== 2`)
+}
+
+export function genHandlers (
+  events: ASTElementHandlers,
+  isNative: boolean,
+  warn: Function
+): string {
+  let res = isNative ? 'nativeOn:{' : 'on:{'
+  for (const name in events) {
+    const handler = events[name]
+    // #5330: warn click.right, since right clicks do not actually fire click events.
+    if (process.env.NODE_ENV !== 'production' &&
+      name === 'click' &&
+      handler && handler.modifiers && handler.modifiers.right
+    ) {
+      warn(
+        `Use "contextmenu" instead of "click.right" since right clicks ` +
+        `do not actually fire "click" events.`
+      )
+    }
+    res += `"${name}":${genHandler(name, handler)},`
+  }
+  return res.slice(0, -1) + '}'
+}
+
+function genHandler (
+  name: string,
+  handler: ASTElementHandler | Array<ASTElementHandler>
+): string {
+  if (!handler) {
+    return 'function(){}'
+  }
+
+  if (Array.isArray(handler)) {
+    return `[${handler.map(handler => genHandler(name, handler)).join(',')}]`
+  }
+
+  const isMethodPath = simplePathRE.test(handler.value)
+  const isFunctionExpression = fnExpRE.test(handler.value)
+
+  if (!handler.modifiers) {
+    return isMethodPath || isFunctionExpression
+      ? handler.value
+      : `function($event){${handler.value}}` // inline statement
+  } else {
+    let code = ''
+    let genModifierCode = ''
+    const keys = []
+    for (const key in handler.modifiers) {
+      if (modifierCode[key]) {
+        genModifierCode += modifierCode[key]
+        // left/right
+        if (keyCodes[key]) {
+          keys.push(key)
+        }
+      } else {
+        keys.push(key)
+      }
+    }
+    if (keys.length) {
+      code += genKeyFilter(keys)
+    }
+    // Make sure modifiers like prevent and stop get executed after key filtering
+    if (genModifierCode) {
+      code += genModifierCode
+    }
+    const handlerCode = isMethodPath
+      ? handler.value + '($event)'
+      : isFunctionExpression
+        ? `(${handler.value})($event)`
+        : handler.value
+    return `function($event){${code}${handlerCode}}`
+  }
+}
+
+function genKeyFilter (keys: Array<string>): string {
+  return `if(!('button' in $event)&&${keys.map(genFilterCode).join('&&')})return null;`
+}
+
+function genFilterCode (key: string): string {
+  const keyVal = parseInt(key, 10)
+  if (keyVal) {
+    return `$event.keyCode!==${keyVal}`
+  }
+  const alias = keyCodes[key]
+  return `_k($event.keyCode,${JSON.stringify(key)}${alias ? ',' + JSON.stringify(alias) : ''})`
+}

node_modules/vue/src/compiler/codegen/index.js

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+/* @flow */
+
+import { genHandlers } from './events'
+import { baseWarn, pluckModuleFunction } from '../helpers'
+import baseDirectives from '../directives/index'
+import { camelize, no } from 'shared/util'
+
+type TransformFunction = (el: ASTElement, code: string) => string;
+type DataGenFunction = (el: ASTElement) => string;
+type DirectiveFunction = (el: ASTElement, dir: ASTDirective, warn: Function) => boolean;
+
+// configurable state
+let warn
+let transforms: Array<TransformFunction>
+let dataGenFns: Array<DataGenFunction>
+let platformDirectives
+let isPlatformReservedTag
+let staticRenderFns
+let onceCount
+let currentOptions
+
+export function generate (
+  ast: ASTElement | void,
+  options: CompilerOptions
+): {
+  render: string,
+  staticRenderFns: Array<string>
+} {
+  // save previous staticRenderFns so generate calls can be nested
+  const prevStaticRenderFns: Array<string> = staticRenderFns
+  const currentStaticRenderFns: Array<string> = staticRenderFns = []
+  const prevOnceCount = onceCount
+  onceCount = 0
+  currentOptions = options
+  warn = options.warn || baseWarn
+  transforms = pluckModuleFunction(options.modules, 'transformCode')
+  dataGenFns = pluckModuleFunction(options.modules, 'genData')
+  platformDirectives = options.directives || {}
+  isPlatformReservedTag = options.isReservedTag || no
+  const code = ast ? genElement(ast) : '_c("div")'
+  staticRenderFns = prevStaticRenderFns
+  onceCount = prevOnceCount
+  return {
+    render: `with(this){return ${code}}`,
+    staticRenderFns: currentStaticRenderFns
+  }
+}
+
+function genElement (el: ASTElement): string {
+  if (el.staticRoot && !el.staticProcessed) {
+    return genStatic(el)
+  } else if (el.once && !el.onceProcessed) {
+    return genOnce(el)
+  } else if (el.for && !el.forProcessed) {
+    return genFor(el)
+  } else if (el.if && !el.ifProcessed) {
+    return genIf(el)
+  } else if (el.tag === 'template' && !el.slotTarget) {
+    return genChildren(el) || 'void 0'
+  } else if (el.tag === 'slot') {
+    return genSlot(el)
+  } else {
+    // component or element
+    let code
+    if (el.component) {
+      code = genComponent(el.component, el)
+    } else {
+      const data = el.plain ? undefined : genData(el)
+
+      const children = el.inlineTemplate ? null : genChildren(el, true)
+      code = `_c('${el.tag}'${
+        data ? `,${data}` : '' // data
+      }${
+        children ? `,${children}` : '' // children
+      })`
+    }
+    // module transforms
+    for (let i = 0; i < transforms.length; i++) {
+      code = transforms[i](el, code)
+    }
+    return code
+  }
+}
+
+// hoist static sub-trees out
+function genStatic (el: ASTElement): string {
+  el.staticProcessed = true
+  staticRenderFns.push(`with(this){return ${genElement(el)}}`)
+  return `_m(${staticRenderFns.length - 1}${el.staticInFor ? ',true' : ''})`
+}
+
+// v-once
+function genOnce (el: ASTElement): string {
+  el.onceProcessed = true
+  if (el.if && !el.ifProcessed) {
+    return genIf(el)
+  } else if (el.staticInFor) {
+    let key = ''
+    let parent = el.parent
+    while (parent) {
+      if (parent.for) {
+        key = parent.key
+        break
+      }
+      parent = parent.parent
+    }
+    if (!key) {
+      process.env.NODE_ENV !== 'production' && warn(
+        `v-once can only be used inside v-for that is keyed. `
+      )
+      return genElement(el)
+    }
+    return `_o(${genElement(el)},${onceCount++}${key ? `,${key}` : ``})`
+  } else {
+    return genStatic(el)
+  }
+}
+
+function genIf (el: any): string {
+  el.ifProcessed = true // avoid recursion
+  return genIfConditions(el.ifConditions.slice())
+}
+
+function genIfConditions (conditions: ASTIfConditions): string {
+  if (!conditions.length) {
+    return '_e()'
+  }
+
+  const condition = conditions.shift()
+  if (condition.exp) {
+    return `(${condition.exp})?${genTernaryExp(condition.block)}:${genIfConditions(conditions)}`
+  } else {
+    return `${genTernaryExp(condition.block)}`
+  }
+
+  // v-if with v-once should generate code like (a)?_m(0):_m(1)
+  function genTernaryExp (el) {
+    return el.once ? genOnce(el) : genElement(el)
+  }
+}
+
+function genFor (el: any): string {
+  const exp = el.for
+  const alias = el.alias
+  const iterator1 = el.iterator1 ? `,${el.iterator1}` : ''
+  const iterator2 = el.iterator2 ? `,${el.iterator2}` : ''
+
+  if (
+    process.env.NODE_ENV !== 'production' &&
+    maybeComponent(el) && el.tag !== 'slot' && el.tag !== 'template' && !el.key
+  ) {
+    warn(
+      `<${el.tag} v-for="${alias} in ${exp}">: component lists rendered with ` +
+      `v-for should have explicit keys. ` +
+      `See https://vuejs.org/guide/list.html#key for more info.`,
+      true /* tip */
+    )
+  }
+
+  el.forProcessed = true // avoid recursion
+  return `_l((${exp}),` +
+    `function(${alias}${iterator1}${iterator2}){` +
+      `return ${genElement(el)}` +
+    '})'
+}
+
+function genData (el: ASTElement): string {
+  let data = '{'
+
+  // directives first.
+  // directives may mutate the el's other properties before they are generated.
+  const dirs = genDirectives(el)
+  if (dirs) data += dirs + ','
+
+  // key
+  if (el.key) {
+    data += `key:${el.key},`
+  }
+  // ref
+  if (el.ref) {
+    data += `ref:${el.ref},`
+  }
+  if (el.refInFor) {
+    data += `refInFor:true,`
+  }
+  // pre
+  if (el.pre) {
+    data += `pre:true,`
+  }
+  // record original tag name for components using "is" attribute
+  if (el.component) {
+    data += `tag:"${el.tag}",`
+  }
+  // module data generation functions
+  for (let i = 0; i < dataGenFns.length; i++) {
+    data += dataGenFns[i](el)
+  }
+  // attributes
+  if (el.attrs) {
+    data += `attrs:{${genProps(el.attrs)}},`
+  }
+  // DOM props
+  if (el.props) {
+    data += `domProps:{${genProps(el.props)}},`
+  }
+  // event handlers
+  if (el.events) {
+    data += `${genHandlers(el.events, false, warn)},`
+  }
+  if (el.nativeEvents) {
+    data += `${genHandlers(el.nativeEvents, true, warn)},`
+  }
+  // slot target
+  if (el.slotTarget) {
+    data += `slot:${el.slotTarget},`
+  }
+  // scoped slots
+  if (el.scopedSlots) {
+    data += `${genScopedSlots(el.scopedSlots)},`
+  }
+  // component v-model
+  if (el.model) {
+    data += `model:{value:${
+      el.model.value
+    },callback:${
+      el.model.callback
+    },expression:${
+      el.model.expression
+    }},`
+  }
+  // inline-template
+  if (el.inlineTemplate) {
+    const inlineTemplate = genInlineTemplate(el)
+    if (inlineTemplate) {
+      data += `${inlineTemplate},`
+    }
+  }
+  data = data.replace(/,$/, '') + '}'
+  // v-bind data wrap
+  if (el.wrapData) {
+    data = el.wrapData(data)
+  }
+  return data
+}
+
+function genDirectives (el: ASTElement): string | void {
+  const dirs = el.directives
+  if (!dirs) return
+  let res = 'directives:['
+  let hasRuntime = false
+  let i, l, dir, needRuntime
+  for (i = 0, l = dirs.length; i < l; i++) {
+    dir = dirs[i]
+    needRuntime = true
+    const gen: DirectiveFunction = platformDirectives[dir.name] || baseDirectives[dir.name]
+    if (gen) {
+      // compile-time directive that manipulates AST.
+      // returns true if it also needs a runtime counterpart.
+      needRuntime = !!gen(el, dir, warn)
+    }
+    if (needRuntime) {
+      hasRuntime = true
+      res += `{name:"${dir.name}",rawName:"${dir.rawName}"${
+        dir.value ? `,value:(${dir.value}),expression:${JSON.stringify(dir.value)}` : ''
+      }${
+        dir.arg ? `,arg:"${dir.arg}"` : ''
+      }${
+        dir.modifiers ? `,modifiers:${JSON.stringify(dir.modifiers)}` : ''
+      }},`
+    }
+  }
+  if (hasRuntime) {
+    return res.slice(0, -1) + ']'
+  }
+}
+
+function genInlineTemplate (el: ASTElement): ?string {
+  const ast = el.children[0]
+  if (process.env.NODE_ENV !== 'production' && (
+    el.children.length > 1 || ast.type !== 1
+  )) {
+    warn('Inline-template components must have exactly one child element.')
+  }
+  if (ast.type === 1) {
+    const inlineRenderFns = generate(ast, currentOptions)
+    return `inlineTemplate:{render:function(){${
+      inlineRenderFns.render
+    }},staticRenderFns:[${
+      inlineRenderFns.staticRenderFns.map(code => `function(){${code}}`).join(',')
+    }]}`
+  }
+}
+
+function genScopedSlots (slots: { [key: string]: ASTElement }): string {
+  return `scopedSlots:_u([${
+    Object.keys(slots).map(key => genScopedSlot(key, slots[key])).join(',')
+  }])`
+}
+
+function genScopedSlot (key: string, el: ASTElement) {
+  if (el.for && !el.forProcessed) {
+    return genForScopedSlot(key, el)
+  }
+  return `{key:${key},fn:function(${String(el.attrsMap.scope)}){` +
+    `return ${el.tag === 'template'
+      ? genChildren(el) || 'void 0'
+      : genElement(el)
+  }}}`
+}
+
+function genForScopedSlot (key: string, el: any) {
+  const exp = el.for
+  const alias = el.alias
+  const iterator1 = el.iterator1 ? `,${el.iterator1}` : ''
+  const iterator2 = el.iterator2 ? `,${el.iterator2}` : ''
+  el.forProcessed = true // avoid recursion
+  return `_l((${exp}),` +
+    `function(${alias}${iterator1}${iterator2}){` +
+      `return ${genScopedSlot(key, el)}` +
+    '})'
+}
+
+function genChildren (el: ASTElement, checkSkip?: boolean): string | void {
+  const children = el.children
+  if (children.length) {
+    const el: any = children[0]
+    // optimize single v-for
+    if (children.length === 1 &&
+      el.for &&
+      el.tag !== 'template' &&
+      el.tag !== 'slot'
+    ) {
+      return genElement(el)
+    }
+    const normalizationType = checkSkip ? getNormalizationType(children) : 0
+    return `[${children.map(genNode).join(',')}]${
+      normalizationType ? `,${normalizationType}` : ''
+    }`
+  }
+}
+
+// determine the normalization needed for the children array.
+// 0: no normalization needed
+// 1: simple normalization needed (possible 1-level deep nested array)
+// 2: full normalization needed
+function getNormalizationType (children: Array<ASTNode>): number {
+  let res = 0
+  for (let i = 0; i < children.length; i++) {
+    const el: ASTNode = children[i]
+    if (el.type !== 1) {
+      continue
+    }
+    if (needsNormalization(el) ||
+        (el.ifConditions && el.ifConditions.some(c => needsNormalization(c.block)))) {
+      res = 2
+      break
+    }
+    if (maybeComponent(el) ||
+        (el.ifConditions && el.ifConditions.some(c => maybeComponent(c.block)))) {
+      res = 1
+    }
+  }
+  return res
+}
+
+function needsNormalization (el: ASTElement): boolean {
+  return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
+}
+
+function maybeComponent (el: ASTElement): boolean {
+  return !isPlatformReservedTag(el.tag)
+}
+
+function genNode (node: ASTNode): string {
+  if (node.type === 1) {
+    return genElement(node)
+  } else {
+    return genText(node)
+  }
+}
+
+function genText (text: ASTText | ASTExpression): string {
+  return `_v(${text.type === 2
+    ? text.expression // no need for () because already wrapped in _s()
+    : transformSpecialNewlines(JSON.stringify(text.text))
+  })`
+}
+
+function genSlot (el: ASTElement): string {
+  const slotName = el.slotName || '"default"'
+  const children = genChildren(el)
+  let res = `_t(${slotName}${children ? `,${children}` : ''}`
+  const attrs = el.attrs && `{${el.attrs.map(a => `${camelize(a.name)}:${a.value}`).join(',')}}`
+  const bind = el.attrsMap['v-bind']
+  if ((attrs || bind) && !children) {
+    res += `,null`
+  }
+  if (attrs) {
+    res += `,${attrs}`
+  }
+  if (bind) {
+    res += `${attrs ? '' : ',null'},${bind}`
+  }
+  return res + ')'
+}
+
+// componentName is el.component, take it as argument to shun flow's pessimistic refinement
+function genComponent (componentName: string, el: ASTElement): string {
+  const children = el.inlineTemplate ? null : genChildren(el, true)
+  return `_c(${componentName},${genData(el)}${
+    children ? `,${children}` : ''
+  })`
+}
+
+function genProps (props: Array<{ name: string, value: string }>): string {
+  let res = ''
+  for (let i = 0; i < props.length; i++) {
+    const prop = props[i]
+    res += `"${prop.name}":${transformSpecialNewlines(prop.value)},`
+  }
+  return res.slice(0, -1)
+}
+
+// #3895, #4268
+function transformSpecialNewlines (text: string): string {
+  return text
+    .replace(/\u2028/g, '\\u2028')
+    .replace(/\u2029/g, '\\u2029')
+}

node_modules/vue/src/compiler/directives/bind.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+export default function bind (el: ASTElement, dir: ASTDirective) {
+  el.wrapData = (code: string) => {
+    return `_b(${code},'${el.tag}',${dir.value}${
+      dir.modifiers && dir.modifiers.prop ? ',true' : ''
+    })`
+  }
+}

node_modules/vue/src/compiler/directives/index.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+import bind from './bind'
+import { noop } from 'shared/util'
+
+export default {
+  bind,
+  cloak: noop
+}

node_modules/vue/src/compiler/directives/model.js

@@ -0,0 +1,133 @@
+/* @flow */
+
+/**
+ * Cross-platform code generation for component v-model
+ */
+export function genComponentModel (
+  el: ASTElement,
+  value: string,
+  modifiers: ?ASTModifiers
+): ?boolean {
+  const { number, trim } = modifiers || {}
+
+  const baseValueExpression = '$$v'
+  let valueExpression = baseValueExpression
+  if (trim) {
+    valueExpression =
+      `(typeof ${baseValueExpression} === 'string'` +
+        `? ${baseValueExpression}.trim()` +
+        `: ${baseValueExpression})`
+  }
+  if (number) {
+    valueExpression = `_n(${valueExpression})`
+  }
+  const assignment = genAssignmentCode(value, valueExpression)
+
+  el.model = {
+    value: `(${value})`,
+    expression: `"${value}"`,
+    callback: `function (${baseValueExpression}) {${assignment}}`
+  }
+}
+
+/**
+ * Cross-platform codegen helper for generating v-model value assignment code.
+ */
+export function genAssignmentCode (
+  value: string,
+  assignment: string
+): string {
+  const modelRs = parseModel(value)
+  if (modelRs.idx === null) {
+    return `${value}=${assignment}`
+  } else {
+    return `var $$exp = ${modelRs.exp}, $$idx = ${modelRs.idx};` +
+      `if (!Array.isArray($$exp)){` +
+        `${value}=${assignment}}` +
+      `else{$$exp.splice($$idx, 1, ${assignment})}`
+  }
+}
+
+/**
+ * parse directive model to do the array update transform. a[idx] = val => $$a.splice($$idx, 1, val)
+ *
+ * for loop possible cases:
+ *
+ * - test
+ * - test[idx]
+ * - test[test1[idx]]
+ * - test["a"][idx]
+ * - xxx.test[a[a].test1[idx]]
+ * - test.xxx.a["asa"][test1[idx]]
+ *
+ */
+
+let len, str, chr, index, expressionPos, expressionEndPos
+
+export function parseModel (val: string): Object {
+  str = val
+  len = str.length
+  index = expressionPos = expressionEndPos = 0
+
+  if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+    return {
+      exp: val,
+      idx: null
+    }
+  }
+
+  while (!eof()) {
+    chr = next()
+    /* istanbul ignore if */
+    if (isStringStart(chr)) {
+      parseString(chr)
+    } else if (chr === 0x5B) {
+      parseBracket(chr)
+    }
+  }
+
+  return {
+    exp: val.substring(0, expressionPos),
+    idx: val.substring(expressionPos + 1, expressionEndPos)
+  }
+}
+
+function next (): number {
+  return str.charCodeAt(++index)
+}
+
+function eof (): boolean {
+  return index >= len
+}
+
+function isStringStart (chr: number): boolean {
+  return chr === 0x22 || chr === 0x27
+}
+
+function parseBracket (chr: number): void {
+  let inBracket = 1
+  expressionPos = index
+  while (!eof()) {
+    chr = next()
+    if (isStringStart(chr)) {
+      parseString(chr)
+      continue
+    }
+    if (chr === 0x5B) inBracket++
+    if (chr === 0x5D) inBracket--
+    if (inBracket === 0) {
+      expressionEndPos = index
+      break
+    }
+  }
+}
+
+function parseString (chr: number): void {
+  const stringQuote = chr
+  while (!eof()) {
+    chr = next()
+    if (chr === stringQuote) {
+      break
+    }
+  }
+}

node_modules/vue/src/compiler/error-detector.js

@@ -0,0 +1,98 @@
+/* @flow */
+
+import { dirRE, onRE } from './parser/index'
+
+// these keywords should not appear inside expressions, but operators like
+// typeof, instanceof and in are allowed
+const prohibitedKeywordRE = new RegExp('\\b' + (
+  'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+  'super,throw,while,yield,delete,export,import,return,switch,default,' +
+  'extends,finally,continue,debugger,function,arguments'
+).split(',').join('\\b|\\b') + '\\b')
+
+// these unary operators should not be used as property/method names
+const unaryOperatorsRE = new RegExp('\\b' + (
+  'delete,typeof,void'
+).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)')
+
+// check valid identifier for v-for
+const identRE = /[A-Za-z_$][\w$]*/
+
+// strip strings in expressions
+const stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g
+
+// detect problematic expressions in a template
+export function detectErrors (ast: ?ASTNode): Array<string> {
+  const errors: Array<string> = []
+  if (ast) {
+    checkNode(ast, errors)
+  }
+  return errors
+}
+
+function checkNode (node: ASTNode, errors: Array<string>) {
+  if (node.type === 1) {
+    for (const name in node.attrsMap) {
+      if (dirRE.test(name)) {
+        const value = node.attrsMap[name]
+        if (value) {
+          if (name === 'v-for') {
+            checkFor(node, `v-for="${value}"`, errors)
+          } else if (onRE.test(name)) {
+            checkEvent(value, `${name}="${value}"`, errors)
+          } else {
+            checkExpression(value, `${name}="${value}"`, errors)
+          }
+        }
+      }
+    }
+    if (node.children) {
+      for (let i = 0; i < node.children.length; i++) {
+        checkNode(node.children[i], errors)
+      }
+    }
+  } else if (node.type === 2) {
+    checkExpression(node.expression, node.text, errors)
+  }
+}
+
+function checkEvent (exp: string, text: string, errors: Array<string>) {
+  const stipped = exp.replace(stripStringRE, '')
+  const keywordMatch: any = stipped.match(unaryOperatorsRE)
+  if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
+    errors.push(
+      `avoid using JavaScript unary operator as property name: ` +
+      `"${keywordMatch[0]}" in expression ${text.trim()}`
+    )
+  }
+  checkExpression(exp, text, errors)
+}
+
+function checkFor (node: ASTElement, text: string, errors: Array<string>) {
+  checkExpression(node.for || '', text, errors)
+  checkIdentifier(node.alias, 'v-for alias', text, errors)
+  checkIdentifier(node.iterator1, 'v-for iterator', text, errors)
+  checkIdentifier(node.iterator2, 'v-for iterator', text, errors)
+}
+
+function checkIdentifier (ident: ?string, type: string, text: string, errors: Array<string>) {
+  if (typeof ident === 'string' && !identRE.test(ident)) {
+    errors.push(`invalid ${type} "${ident}" in expression: ${text.trim()}`)
+  }
+}
+
+function checkExpression (exp: string, text: string, errors: Array<string>) {
+  try {
+    new Function(`return ${exp}`)
+  } catch (e) {
+    const keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE)
+    if (keywordMatch) {
+      errors.push(
+        `avoid using JavaScript keyword as property name: ` +
+        `"${keywordMatch[0]}" in expression ${text.trim()}`
+      )
+    } else {
+      errors.push(`invalid expression: ${text.trim()}`)
+    }
+  }
+}

node_modules/vue/src/compiler/helpers.js

@@ -0,0 +1,119 @@
+/* @flow */
+
+import { parseFilters } from './parser/filter-parser'
+
+export function baseWarn (msg: string) {
+  console.error(`[Vue compiler]: ${msg}`)
+}
+
+export function pluckModuleFunction<F: Function> (
+  modules: ?Array<Object>,
+  key: string
+): Array<F> {
+  return modules
+    ? modules.map(m => m[key]).filter(_ => _)
+    : []
+}
+
+export function addProp (el: ASTElement, name: string, value: string) {
+  (el.props || (el.props = [])).push({ name, value })
+}
+
+export function addAttr (el: ASTElement, name: string, value: string) {
+  (el.attrs || (el.attrs = [])).push({ name, value })
+}
+
+export function addDirective (
+  el: ASTElement,
+  name: string,
+  rawName: string,
+  value: string,
+  arg: ?string,
+  modifiers: ?ASTModifiers
+) {
+  (el.directives || (el.directives = [])).push({ name, rawName, value, arg, modifiers })
+}
+
+export function addHandler (
+  el: ASTElement,
+  name: string,
+  value: string,
+  modifiers: ?ASTModifiers,
+  important?: boolean,
+  warn?: Function
+) {
+  // warn prevent and passive modifier
+  /* istanbul ignore if */
+  if (
+    process.env.NODE_ENV !== 'production' && warn &&
+    modifiers && modifiers.prevent && modifiers.passive
+  ) {
+    warn(
+      'passive and prevent can\'t be used together. ' +
+      'Passive handler can\'t prevent default event.'
+    )
+  }
+  // check capture modifier
+  if (modifiers && modifiers.capture) {
+    delete modifiers.capture
+    name = '!' + name // mark the event as captured
+  }
+  if (modifiers && modifiers.once) {
+    delete modifiers.once
+    name = '~' + name // mark the event as once
+  }
+  /* istanbul ignore if */
+  if (modifiers && modifiers.passive) {
+    delete modifiers.passive
+    name = '&' + name // mark the event as passive
+  }
+  let events
+  if (modifiers && modifiers.native) {
+    delete modifiers.native
+    events = el.nativeEvents || (el.nativeEvents = {})
+  } else {
+    events = el.events || (el.events = {})
+  }
+  const newHandler = { value, modifiers }
+  const handlers = events[name]
+  /* istanbul ignore if */
+  if (Array.isArray(handlers)) {
+    important ? handlers.unshift(newHandler) : handlers.push(newHandler)
+  } else if (handlers) {
+    events[name] = important ? [newHandler, handlers] : [handlers, newHandler]
+  } else {
+    events[name] = newHandler
+  }
+}
+
+export function getBindingAttr (
+  el: ASTElement,
+  name: string,
+  getStatic?: boolean
+): ?string {
+  const dynamicValue =
+    getAndRemoveAttr(el, ':' + name) ||
+    getAndRemoveAttr(el, 'v-bind:' + name)
+  if (dynamicValue != null) {
+    return parseFilters(dynamicValue)
+  } else if (getStatic !== false) {
+    const staticValue = getAndRemoveAttr(el, name)
+    if (staticValue != null) {
+      return JSON.stringify(staticValue)
+    }
+  }
+}
+
+export function getAndRemoveAttr (el: ASTElement, name: string): ?string {
+  let val
+  if ((val = el.attrsMap[name]) != null) {
+    const list = el.attrsList
+    for (let i = 0, l = list.length; i < l; i++) {
+      if (list[i].name === name) {
+        list.splice(i, 1)
+        break
+      }
+    }
+  }
+  return val
+}

node_modules/vue/src/compiler/index.js

@@ -0,0 +1,159 @@
+/* @flow */
+
+import { parse } from './parser/index'
+import { optimize } from './optimizer'
+import { generate } from './codegen/index'
+import { detectErrors } from './error-detector'
+import { extend, noop } from 'shared/util'
+import { warn, tip } from 'core/util/debug'
+
+function baseCompile (
+  template: string,
+  options: CompilerOptions
+): CompiledResult {
+  const ast = parse(template.trim(), options)
+  optimize(ast, options)
+  const code = generate(ast, options)
+  return {
+    ast,
+    render: code.render,
+    staticRenderFns: code.staticRenderFns
+  }
+}
+
+function makeFunction (code, errors) {
+  try {
+    return new Function(code)
+  } catch (err) {
+    errors.push({ err, code })
+    return noop
+  }
+}
+
+export function createCompiler (baseOptions: CompilerOptions) {
+  const functionCompileCache: {
+    [key: string]: CompiledFunctionResult;
+  } = Object.create(null)
+
+  function compile (
+    template: string,
+    options?: CompilerOptions
+  ): CompiledResult {
+    const finalOptions = Object.create(baseOptions)
+    const errors = []
+    const tips = []
+    finalOptions.warn = (msg, tip) => {
+      (tip ? tips : errors).push(msg)
+    }
+
+    if (options) {
+      // merge custom modules
+      if (options.modules) {
+        finalOptions.modules = (baseOptions.modules || []).concat(options.modules)
+      }
+      // merge custom directives
+      if (options.directives) {
+        finalOptions.directives = extend(
+          Object.create(baseOptions.directives),
+          options.directives
+        )
+      }
+      // copy other options
+      for (const key in options) {
+        if (key !== 'modules' && key !== 'directives') {
+          finalOptions[key] = options[key]
+        }
+      }
+    }
+
+    const compiled = baseCompile(template, finalOptions)
+    if (process.env.NODE_ENV !== 'production') {
+      errors.push.apply(errors, detectErrors(compiled.ast))
+    }
+    compiled.errors = errors
+    compiled.tips = tips
+    return compiled
+  }
+
+  function compileToFunctions (
+    template: string,
+    options?: CompilerOptions,
+    vm?: Component
+  ): CompiledFunctionResult {
+    options = options || {}
+
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production') {
+      // detect possible CSP restriction
+      try {
+        new Function('return 1')
+      } catch (e) {
+        if (e.toString().match(/unsafe-eval|CSP/)) {
+          warn(
+            'It seems you are using the standalone build of Vue.js in an ' +
+            'environment with Content Security Policy that prohibits unsafe-eval. ' +
+            'The template compiler cannot work in this environment. Consider ' +
+            'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+            'templates into render functions.'
+          )
+        }
+      }
+    }
+
+    // check cache
+    const key = options.delimiters
+      ? String(options.delimiters) + template
+      : template
+    if (functionCompileCache[key]) {
+      return functionCompileCache[key]
+    }
+
+    // compile
+    const compiled = compile(template, options)
+
+    // check compilation errors/tips
+    if (process.env.NODE_ENV !== 'production') {
+      if (compiled.errors && compiled.errors.length) {
+        warn(
+          `Error compiling template:\n\n${template}\n\n` +
+          compiled.errors.map(e => `- ${e}`).join('\n') + '\n',
+          vm
+        )
+      }
+      if (compiled.tips && compiled.tips.length) {
+        compiled.tips.forEach(msg => tip(msg, vm))
+      }
+    }
+
+    // turn code into functions
+    const res = {}
+    const fnGenErrors = []
+    res.render = makeFunction(compiled.render, fnGenErrors)
+    const l = compiled.staticRenderFns.length
+    res.staticRenderFns = new Array(l)
+    for (let i = 0; i < l; i++) {
+      res.staticRenderFns[i] = makeFunction(compiled.staticRenderFns[i], fnGenErrors)
+    }
+
+    // check function generation errors.
+    // this should only happen if there is a bug in the compiler itself.
+    // mostly for codegen development use
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production') {
+      if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
+        warn(
+          `Failed to generate render function:\n\n` +
+          fnGenErrors.map(({ err, code }) => `${err.toString()} in\n\n${code}\n`).join('\n'),
+          vm
+        )
+      }
+    }
+
+    return (functionCompileCache[key] = res)
+  }
+
+  return {
+    compile,
+    compileToFunctions
+  }
+}

node_modules/vue/src/compiler/optimizer.js

@@ -0,0 +1,123 @@
+/* @flow */
+
+import { makeMap, isBuiltInTag, cached, no } from 'shared/util'
+
+let isStaticKey
+let isPlatformReservedTag
+
+const genStaticKeysCached = cached(genStaticKeys)
+
+/**
+ * Goal of the optimizer: walk the generated template AST tree
+ * and detect sub-trees that are purely static, i.e. parts of
+ * the DOM that never needs to change.
+ *
+ * Once we detect these sub-trees, we can:
+ *
+ * 1. Hoist them into constants, so that we no longer need to
+ *    create fresh nodes for them on each re-render;
+ * 2. Completely skip them in the patching process.
+ */
+export function optimize (root: ?ASTElement, options: CompilerOptions) {
+  if (!root) return
+  isStaticKey = genStaticKeysCached(options.staticKeys || '')
+  isPlatformReservedTag = options.isReservedTag || no
+  // first pass: mark all non-static nodes.
+  markStatic(root)
+  // second pass: mark static roots.
+  markStaticRoots(root, false)
+}
+
+function genStaticKeys (keys: string): Function {
+  return makeMap(
+    'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
+    (keys ? ',' + keys : '')
+  )
+}
+
+function markStatic (node: ASTNode) {
+  node.static = isStatic(node)
+  if (node.type === 1) {
+    // do not make component slot content static. this avoids
+    // 1. components not able to mutate slot nodes
+    // 2. static slot content fails for hot-reloading
+    if (
+      !isPlatformReservedTag(node.tag) &&
+      node.tag !== 'slot' &&
+      node.attrsMap['inline-template'] == null
+    ) {
+      return
+    }
+    for (let i = 0, l = node.children.length; i < l; i++) {
+      const child = node.children[i]
+      markStatic(child)
+      if (!child.static) {
+        node.static = false
+      }
+    }
+  }
+}
+
+function markStaticRoots (node: ASTNode, isInFor: boolean) {
+  if (node.type === 1) {
+    if (node.static || node.once) {
+      node.staticInFor = isInFor
+    }
+    // For a node to qualify as a static root, it should have children that
+    // are not just static text. Otherwise the cost of hoisting out will
+    // outweigh the benefits and it's better off to just always render it fresh.
+    if (node.static && node.children.length && !(
+      node.children.length === 1 &&
+      node.children[0].type === 3
+    )) {
+      node.staticRoot = true
+      return
+    } else {
+      node.staticRoot = false
+    }
+    if (node.children) {
+      for (let i = 0, l = node.children.length; i < l; i++) {
+        markStaticRoots(node.children[i], isInFor || !!node.for)
+      }
+    }
+    if (node.ifConditions) {
+      walkThroughConditionsBlocks(node.ifConditions, isInFor)
+    }
+  }
+}
+
+function walkThroughConditionsBlocks (conditionBlocks: ASTIfConditions, isInFor: boolean): void {
+  for (let i = 1, len = conditionBlocks.length; i < len; i++) {
+    markStaticRoots(conditionBlocks[i].block, isInFor)
+  }
+}
+
+function isStatic (node: ASTNode): boolean {
+  if (node.type === 2) { // expression
+    return false
+  }
+  if (node.type === 3) { // text
+    return true
+  }
+  return !!(node.pre || (
+    !node.hasBindings && // no dynamic bindings
+    !node.if && !node.for && // not v-if or v-for or v-else
+    !isBuiltInTag(node.tag) && // not a built-in
+    isPlatformReservedTag(node.tag) && // not a component
+    !isDirectChildOfTemplateFor(node) &&
+    Object.keys(node).every(isStaticKey)
+  ))
+}
+
+function isDirectChildOfTemplateFor (node: ASTElement): boolean {
+  while (node.parent) {
+    node = node.parent
+    if (node.tag !== 'template') {
+      return false
+    }
+    if (node.for) {
+      return true
+    }
+  }
+  return false
+}

node_modules/vue/src/compiler/parser/entity-decoder.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+let decoder
+
+export function decode (html: string): string {
+  decoder = decoder || document.createElement('div')
+  decoder.innerHTML = html
+  return decoder.textContent
+}

node_modules/vue/src/compiler/parser/filter-parser.js

@@ -0,0 +1,97 @@
+/* @flow */
+
+const validDivisionCharRE = /[\w).+\-_$\]]/
+
+export function parseFilters (exp: string): string {
+  let inSingle = false
+  let inDouble = false
+  let inTemplateString = false
+  let inRegex = false
+  let curly = 0
+  let square = 0
+  let paren = 0
+  let lastFilterIndex = 0
+  let c, prev, i, expression, filters
+
+  for (i = 0; i < exp.length; i++) {
+    prev = c
+    c = exp.charCodeAt(i)
+    if (inSingle) {
+      if (c === 0x27 && prev !== 0x5C) inSingle = false
+    } else if (inDouble) {
+      if (c === 0x22 && prev !== 0x5C) inDouble = false
+    } else if (inTemplateString) {
+      if (c === 0x60 && prev !== 0x5C) inTemplateString = false
+    } else if (inRegex) {
+      if (c === 0x2f && prev !== 0x5C) inRegex = false
+    } else if (
+      c === 0x7C && // pipe
+      exp.charCodeAt(i + 1) !== 0x7C &&
+      exp.charCodeAt(i - 1) !== 0x7C &&
+      !curly && !square && !paren
+    ) {
+      if (expression === undefined) {
+        // first filter, end of expression
+        lastFilterIndex = i + 1
+        expression = exp.slice(0, i).trim()
+      } else {
+        pushFilter()
+      }
+    } else {
+      switch (c) {
+        case 0x22: inDouble = true; break         // "
+        case 0x27: inSingle = true; break         // '
+        case 0x60: inTemplateString = true; break // `
+        case 0x28: paren++; break                 // (
+        case 0x29: paren--; break                 // )
+        case 0x5B: square++; break                // [
+        case 0x5D: square--; break                // ]
+        case 0x7B: curly++; break                 // {
+        case 0x7D: curly--; break                 // }
+      }
+      if (c === 0x2f) { // /
+        let j = i - 1
+        let p
+        // find first non-whitespace prev char
+        for (; j >= 0; j--) {
+          p = exp.charAt(j)
+          if (p !== ' ') break
+        }
+        if (!p || !validDivisionCharRE.test(p)) {
+          inRegex = true
+        }
+      }
+    }
+  }
+
+  if (expression === undefined) {
+    expression = exp.slice(0, i).trim()
+  } else if (lastFilterIndex !== 0) {
+    pushFilter()
+  }
+
+  function pushFilter () {
+    (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim())
+    lastFilterIndex = i + 1
+  }
+
+  if (filters) {
+    for (i = 0; i < filters.length; i++) {
+      expression = wrapFilter(expression, filters[i])
+    }
+  }
+
+  return expression
+}
+
+function wrapFilter (exp: string, filter: string): string {
+  const i = filter.indexOf('(')
+  if (i < 0) {
+    // _f: resolveFilter
+    return `_f("${filter}")(${exp})`
+  } else {
+    const name = filter.slice(0, i)
+    const args = filter.slice(i + 1)
+    return `_f("${name}")(${exp},${args}`
+  }
+}

node_modules/vue/src/compiler/parser/html-parser.js

@@ -0,0 +1,310 @@
+/**
+ * Not type-checking this file because it's mostly vendor code.
+ */
+
+/*!
+ * HTML Parser By John Resig (ejohn.org)
+ * Modified by Juriy "kangax" Zaytsev
+ * Original code by Erik Arvidsson, Mozilla Public License
+ * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
+ */
+
+import { makeMap, no } from 'shared/util'
+import { isNonPhrasingTag } from 'web/compiler/util'
+
+// Regular Expressions for parsing tags and attributes
+const singleAttrIdentifier = /([^\s"'<>/=]+)/
+const singleAttrAssign = /(?:=)/
+const singleAttrValues = [
+  // attr value double quotes
+  /"([^"]*)"+/.source,
+  // attr value, single quotes
+  /'([^']*)'+/.source,
+  // attr value, no quotes
+  /([^\s"'=<>`]+)/.source
+]
+const attribute = new RegExp(
+  '^\\s*' + singleAttrIdentifier.source +
+  '(?:\\s*(' + singleAttrAssign.source + ')' +
+  '\\s*(?:' + singleAttrValues.join('|') + '))?'
+)
+
+// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
+// but for Vue templates we can enforce a simple charset
+const ncname = '[a-zA-Z_][\\w\\-\\.]*'
+const qnameCapture = '((?:' + ncname + '\\:)?' + ncname + ')'
+const startTagOpen = new RegExp('^<' + qnameCapture)
+const startTagClose = /^\s*(\/?)>/
+const endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>')
+const doctype = /^<!DOCTYPE [^>]+>/i
+const comment = /^<!--/
+const conditionalComment = /^<!\[/
+
+let IS_REGEX_CAPTURING_BROKEN = false
+'x'.replace(/x(.)?/g, function (m, g) {
+  IS_REGEX_CAPTURING_BROKEN = g === ''
+})
+
+// Special Elements (can contain anything)
+export const isPlainTextElement = makeMap('script,style,textarea', true)
+const reCache = {}
+
+const decodingMap = {
+  '&lt;': '<',
+  '&gt;': '>',
+  '&quot;': '"',
+  '&amp;': '&',
+  '&#10;': '\n'
+}
+const encodedAttr = /&(?:lt|gt|quot|amp);/g
+const encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10);/g
+
+function decodeAttr (value, shouldDecodeNewlines) {
+  const re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr
+  return value.replace(re, match => decodingMap[match])
+}
+
+export function parseHTML (html, options) {
+  const stack = []
+  const expectHTML = options.expectHTML
+  const isUnaryTag = options.isUnaryTag || no
+  const canBeLeftOpenTag = options.canBeLeftOpenTag || no
+  let index = 0
+  let last, lastTag
+  while (html) {
+    last = html
+    // Make sure we're not in a plaintext content element like script/style
+    if (!lastTag || !isPlainTextElement(lastTag)) {
+      let textEnd = html.indexOf('<')
+      if (textEnd === 0) {
+        // Comment:
+        if (comment.test(html)) {
+          const commentEnd = html.indexOf('-->')
+
+          if (commentEnd >= 0) {
+            advance(commentEnd + 3)
+            continue
+          }
+        }
+
+        // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+        if (conditionalComment.test(html)) {
+          const conditionalEnd = html.indexOf(']>')
+
+          if (conditionalEnd >= 0) {
+            advance(conditionalEnd + 2)
+            continue
+          }
+        }
+
+        // Doctype:
+        const doctypeMatch = html.match(doctype)
+        if (doctypeMatch) {
+          advance(doctypeMatch[0].length)
+          continue
+        }
+
+        // End tag:
+        const endTagMatch = html.match(endTag)
+        if (endTagMatch) {
+          const curIndex = index
+          advance(endTagMatch[0].length)
+          parseEndTag(endTagMatch[1], curIndex, index)
+          continue
+        }
+
+        // Start tag:
+        const startTagMatch = parseStartTag()
+        if (startTagMatch) {
+          handleStartTag(startTagMatch)
+          continue
+        }
+      }
+
+      let text, rest, next
+      if (textEnd >= 0) {
+        rest = html.slice(textEnd)
+        while (
+          !endTag.test(rest) &&
+          !startTagOpen.test(rest) &&
+          !comment.test(rest) &&
+          !conditionalComment.test(rest)
+        ) {
+          // < in plain text, be forgiving and treat it as text
+          next = rest.indexOf('<', 1)
+          if (next < 0) break
+          textEnd += next
+          rest = html.slice(textEnd)
+        }
+        text = html.substring(0, textEnd)
+        advance(textEnd)
+      }
+
+      if (textEnd < 0) {
+        text = html
+        html = ''
+      }
+
+      if (options.chars && text) {
+        options.chars(text)
+      }
+    } else {
+      var stackedTag = lastTag.toLowerCase()
+      var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'))
+      var endTagLength = 0
+      var rest = html.replace(reStackedTag, function (all, text, endTag) {
+        endTagLength = endTag.length
+        if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
+          text = text
+            .replace(/<!--([\s\S]*?)-->/g, '$1')
+            .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1')
+        }
+        if (options.chars) {
+          options.chars(text)
+        }
+        return ''
+      })
+      index += html.length - rest.length
+      html = rest
+      parseEndTag(stackedTag, index - endTagLength, index)
+    }
+
+    if (html === last) {
+      options.chars && options.chars(html)
+      if (process.env.NODE_ENV !== 'production' && !stack.length && options.warn) {
+        options.warn(`Mal-formatted tag at end of template: "${html}"`)
+      }
+      break
+    }
+  }
+
+  // Clean up any remaining tags
+  parseEndTag()
+
+  function advance (n) {
+    index += n
+    html = html.substring(n)
+  }
+
+  function parseStartTag () {
+    const start = html.match(startTagOpen)
+    if (start) {
+      const match = {
+        tagName: start[1],
+        attrs: [],
+        start: index
+      }
+      advance(start[0].length)
+      let end, attr
+      while (!(end = html.match(startTagClose)) && (attr = html.match(attribute))) {
+        advance(attr[0].length)
+        match.attrs.push(attr)
+      }
+      if (end) {
+        match.unarySlash = end[1]
+        advance(end[0].length)
+        match.end = index
+        return match
+      }
+    }
+  }
+
+  function handleStartTag (match) {
+    const tagName = match.tagName
+    const unarySlash = match.unarySlash
+
+    if (expectHTML) {
+      if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
+        parseEndTag(lastTag)
+      }
+      if (canBeLeftOpenTag(tagName) && lastTag === tagName) {
+        parseEndTag(tagName)
+      }
+    }
+
+    const unary = isUnaryTag(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash
+
+    const l = match.attrs.length
+    const attrs = new Array(l)
+    for (let i = 0; i < l; i++) {
+      const args = match.attrs[i]
+      // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
+      if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
+        if (args[3] === '') { delete args[3] }
+        if (args[4] === '') { delete args[4] }
+        if (args[5] === '') { delete args[5] }
+      }
+      const value = args[3] || args[4] || args[5] || ''
+      attrs[i] = {
+        name: args[1],
+        value: decodeAttr(
+          value,
+          options.shouldDecodeNewlines
+        )
+      }
+    }
+
+    if (!unary) {
+      stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs })
+      lastTag = tagName
+    }
+
+    if (options.start) {
+      options.start(tagName, attrs, unary, match.start, match.end)
+    }
+  }
+
+  function parseEndTag (tagName, start, end) {
+    let pos, lowerCasedTagName
+    if (start == null) start = index
+    if (end == null) end = index
+
+    if (tagName) {
+      lowerCasedTagName = tagName.toLowerCase()
+    }
+
+    // Find the closest opened tag of the same type
+    if (tagName) {
+      for (pos = stack.length - 1; pos >= 0; pos--) {
+        if (stack[pos].lowerCasedTag === lowerCasedTagName) {
+          break
+        }
+      }
+    } else {
+      // If no tag name is provided, clean shop
+      pos = 0
+    }
+
+    if (pos >= 0) {
+      // Close all the open elements, up the stack
+      for (let i = stack.length - 1; i >= pos; i--) {
+        if (process.env.NODE_ENV !== 'production' &&
+          (i > pos || !tagName) &&
+          options.warn
+        ) {
+          options.warn(
+            `tag <${stack[i].tag}> has no matching end tag.`
+          )
+        }
+        if (options.end) {
+          options.end(stack[i].tag, start, end)
+        }
+      }
+
+      // Remove the open elements from the stack
+      stack.length = pos
+      lastTag = pos && stack[pos - 1].tag
+    } else if (lowerCasedTagName === 'br') {
+      if (options.start) {
+        options.start(tagName, [], true, start, end)
+      }
+    } else if (lowerCasedTagName === 'p') {
+      if (options.start) {
+        options.start(tagName, [], false, start, end)
+      }
+      if (options.end) {
+        options.end(tagName, start, end)
+      }
+    }
+  }
+}

node_modules/vue/src/compiler/parser/index.js

@@ -0,0 +1,593 @@
+/* @flow */
+
+import { decode } from 'he'
+import { parseHTML } from './html-parser'
+import { parseText } from './text-parser'
+import { parseFilters } from './filter-parser'
+import { cached, no, camelize } from 'shared/util'
+import { genAssignmentCode } from '../directives/model'
+import { isIE, isEdge, isServerRendering } from 'core/util/env'
+
+import {
+  addProp,
+  addAttr,
+  baseWarn,
+  addHandler,
+  addDirective,
+  getBindingAttr,
+  getAndRemoveAttr,
+  pluckModuleFunction
+} from '../helpers'
+
+export const onRE = /^@|^v-on:/
+export const dirRE = /^v-|^@|^:/
+export const forAliasRE = /(.*?)\s+(?:in|of)\s+(.*)/
+export const forIteratorRE = /\((\{[^}]*\}|[^,]*),([^,]*)(?:,([^,]*))?\)/
+
+const argRE = /:(.*)$/
+const bindRE = /^:|^v-bind:/
+const modifierRE = /\.[^.]+/g
+
+const decodeHTMLCached = cached(decode)
+
+// configurable state
+export let warn
+let delimiters
+let transforms
+let preTransforms
+let postTransforms
+let platformIsPreTag
+let platformMustUseProp
+let platformGetTagNamespace
+
+/**
+ * Convert HTML string to AST.
+ */
+export function parse (
+  template: string,
+  options: CompilerOptions
+): ASTElement | void {
+  warn = options.warn || baseWarn
+  platformGetTagNamespace = options.getTagNamespace || no
+  platformMustUseProp = options.mustUseProp || no
+  platformIsPreTag = options.isPreTag || no
+  preTransforms = pluckModuleFunction(options.modules, 'preTransformNode')
+  transforms = pluckModuleFunction(options.modules, 'transformNode')
+  postTransforms = pluckModuleFunction(options.modules, 'postTransformNode')
+  delimiters = options.delimiters
+
+  const stack = []
+  const preserveWhitespace = options.preserveWhitespace !== false
+  let root
+  let currentParent
+  let inVPre = false
+  let inPre = false
+  let warned = false
+
+  function warnOnce (msg) {
+    if (!warned) {
+      warned = true
+      warn(msg)
+    }
+  }
+
+  function endPre (element) {
+    // check pre state
+    if (element.pre) {
+      inVPre = false
+    }
+    if (platformIsPreTag(element.tag)) {
+      inPre = false
+    }
+  }
+
+  parseHTML(template, {
+    warn,
+    expectHTML: options.expectHTML,
+    isUnaryTag: options.isUnaryTag,
+    canBeLeftOpenTag: options.canBeLeftOpenTag,
+    shouldDecodeNewlines: options.shouldDecodeNewlines,
+    start (tag, attrs, unary) {
+      // check namespace.
+      // inherit parent ns if there is one
+      const ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag)
+
+      // handle IE svg bug
+      /* istanbul ignore if */
+      if (isIE && ns === 'svg') {
+        attrs = guardIESVGBug(attrs)
+      }
+
+      const element: ASTElement = {
+        type: 1,
+        tag,
+        attrsList: attrs,
+        attrsMap: makeAttrsMap(attrs),
+        parent: currentParent,
+        children: []
+      }
+      if (ns) {
+        element.ns = ns
+      }
+
+      if (isForbiddenTag(element) && !isServerRendering()) {
+        element.forbidden = true
+        process.env.NODE_ENV !== 'production' && warn(
+          'Templates should only be responsible for mapping the state to the ' +
+          'UI. Avoid placing tags with side-effects in your templates, such as ' +
+          `<${tag}>` + ', as they will not be parsed.'
+        )
+      }
+
+      // apply pre-transforms
+      for (let i = 0; i < preTransforms.length; i++) {
+        preTransforms[i](element, options)
+      }
+
+      if (!inVPre) {
+        processPre(element)
+        if (element.pre) {
+          inVPre = true
+        }
+      }
+      if (platformIsPreTag(element.tag)) {
+        inPre = true
+      }
+      if (inVPre) {
+        processRawAttrs(element)
+      } else {
+        processFor(element)
+        processIf(element)
+        processOnce(element)
+        processKey(element)
+
+        // determine whether this is a plain element after
+        // removing structural attributes
+        element.plain = !element.key && !attrs.length
+
+        processRef(element)
+        processSlot(element)
+        processComponent(element)
+        for (let i = 0; i < transforms.length; i++) {
+          transforms[i](element, options)
+        }
+        processAttrs(element)
+      }
+
+      function checkRootConstraints (el) {
+        if (process.env.NODE_ENV !== 'production') {
+          if (el.tag === 'slot' || el.tag === 'template') {
+            warnOnce(
+              `Cannot use <${el.tag}> as component root element because it may ` +
+              'contain multiple nodes.'
+            )
+          }
+          if (el.attrsMap.hasOwnProperty('v-for')) {
+            warnOnce(
+              'Cannot use v-for on stateful component root element because ' +
+              'it renders multiple elements.'
+            )
+          }
+        }
+      }
+
+      // tree management
+      if (!root) {
+        root = element
+        checkRootConstraints(root)
+      } else if (!stack.length) {
+        // allow root elements with v-if, v-else-if and v-else
+        if (root.if && (element.elseif || element.else)) {
+          checkRootConstraints(element)
+          addIfCondition(root, {
+            exp: element.elseif,
+            block: element
+          })
+        } else if (process.env.NODE_ENV !== 'production') {
+          warnOnce(
+            `Component template should contain exactly one root element. ` +
+            `If you are using v-if on multiple elements, ` +
+            `use v-else-if to chain them instead.`
+          )
+        }
+      }
+      if (currentParent && !element.forbidden) {
+        if (element.elseif || element.else) {
+          processIfConditions(element, currentParent)
+        } else if (element.slotScope) { // scoped slot
+          currentParent.plain = false
+          const name = element.slotTarget || '"default"'
+          ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element
+        } else {
+          currentParent.children.push(element)
+          element.parent = currentParent
+        }
+      }
+      if (!unary) {
+        currentParent = element
+        stack.push(element)
+      } else {
+        endPre(element)
+      }
+      // apply post-transforms
+      for (let i = 0; i < postTransforms.length; i++) {
+        postTransforms[i](element, options)
+      }
+    },
+
+    end () {
+      // remove trailing whitespace
+      const element = stack[stack.length - 1]
+      const lastNode = element.children[element.children.length - 1]
+      if (lastNode && lastNode.type === 3 && lastNode.text === ' ' && !inPre) {
+        element.children.pop()
+      }
+      // pop stack
+      stack.length -= 1
+      currentParent = stack[stack.length - 1]
+      endPre(element)
+    },
+
+    chars (text: string) {
+      if (!currentParent) {
+        if (process.env.NODE_ENV !== 'production') {
+          if (text === template) {
+            warnOnce(
+              'Component template requires a root element, rather than just text.'
+            )
+          } else if ((text = text.trim())) {
+            warnOnce(
+              `text "${text}" outside root element will be ignored.`
+            )
+          }
+        }
+        return
+      }
+      // IE textarea placeholder bug
+      /* istanbul ignore if */
+      if (isIE &&
+        currentParent.tag === 'textarea' &&
+        currentParent.attrsMap.placeholder === text
+      ) {
+        return
+      }
+      const children = currentParent.children
+      text = inPre || text.trim()
+        ? isTextTag(currentParent) ? text : decodeHTMLCached(text)
+        // only preserve whitespace if its not right after a starting tag
+        : preserveWhitespace && children.length ? ' ' : ''
+      if (text) {
+        let expression
+        if (!inVPre && text !== ' ' && (expression = parseText(text, delimiters))) {
+          children.push({
+            type: 2,
+            expression,
+            text
+          })
+        } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
+          children.push({
+            type: 3,
+            text
+          })
+        }
+      }
+    }
+  })
+  return root
+}
+
+function processPre (el) {
+  if (getAndRemoveAttr(el, 'v-pre') != null) {
+    el.pre = true
+  }
+}
+
+function processRawAttrs (el) {
+  const l = el.attrsList.length
+  if (l) {
+    const attrs = el.attrs = new Array(l)
+    for (let i = 0; i < l; i++) {
+      attrs[i] = {
+        name: el.attrsList[i].name,
+        value: JSON.stringify(el.attrsList[i].value)
+      }
+    }
+  } else if (!el.pre) {
+    // non root node in pre blocks with no attributes
+    el.plain = true
+  }
+}
+
+function processKey (el) {
+  const exp = getBindingAttr(el, 'key')
+  if (exp) {
+    if (process.env.NODE_ENV !== 'production' && el.tag === 'template') {
+      warn(`<template> cannot be keyed. Place the key on real elements instead.`)
+    }
+    el.key = exp
+  }
+}
+
+function processRef (el) {
+  const ref = getBindingAttr(el, 'ref')
+  if (ref) {
+    el.ref = ref
+    el.refInFor = checkInFor(el)
+  }
+}
+
+function processFor (el) {
+  let exp
+  if ((exp = getAndRemoveAttr(el, 'v-for'))) {
+    const inMatch = exp.match(forAliasRE)
+    if (!inMatch) {
+      process.env.NODE_ENV !== 'production' && warn(
+        `Invalid v-for expression: ${exp}`
+      )
+      return
+    }
+    el.for = inMatch[2].trim()
+    const alias = inMatch[1].trim()
+    const iteratorMatch = alias.match(forIteratorRE)
+    if (iteratorMatch) {
+      el.alias = iteratorMatch[1].trim()
+      el.iterator1 = iteratorMatch[2].trim()
+      if (iteratorMatch[3]) {
+        el.iterator2 = iteratorMatch[3].trim()
+      }
+    } else {
+      el.alias = alias
+    }
+  }
+}
+
+function processIf (el) {
+  const exp = getAndRemoveAttr(el, 'v-if')
+  if (exp) {
+    el.if = exp
+    addIfCondition(el, {
+      exp: exp,
+      block: el
+    })
+  } else {
+    if (getAndRemoveAttr(el, 'v-else') != null) {
+      el.else = true
+    }
+    const elseif = getAndRemoveAttr(el, 'v-else-if')
+    if (elseif) {
+      el.elseif = elseif
+    }
+  }
+}
+
+function processIfConditions (el, parent) {
+  const prev = findPrevElement(parent.children)
+  if (prev && prev.if) {
+    addIfCondition(prev, {
+      exp: el.elseif,
+      block: el
+    })
+  } else if (process.env.NODE_ENV !== 'production') {
+    warn(
+      `v-${el.elseif ? ('else-if="' + el.elseif + '"') : 'else'} ` +
+      `used on element <${el.tag}> without corresponding v-if.`
+    )
+  }
+}
+
+function findPrevElement (children: Array<any>): ASTElement | void {
+  let i = children.length
+  while (i--) {
+    if (children[i].type === 1) {
+      return children[i]
+    } else {
+      if (process.env.NODE_ENV !== 'production' && children[i].text !== ' ') {
+        warn(
+          `text "${children[i].text.trim()}" between v-if and v-else(-if) ` +
+          `will be ignored.`
+        )
+      }
+      children.pop()
+    }
+  }
+}
+
+function addIfCondition (el, condition) {
+  if (!el.ifConditions) {
+    el.ifConditions = []
+  }
+  el.ifConditions.push(condition)
+}
+
+function processOnce (el) {
+  const once = getAndRemoveAttr(el, 'v-once')
+  if (once != null) {
+    el.once = true
+  }
+}
+
+function processSlot (el) {
+  if (el.tag === 'slot') {
+    el.slotName = getBindingAttr(el, 'name')
+    if (process.env.NODE_ENV !== 'production' && el.key) {
+      warn(
+        `\`key\` does not work on <slot> because slots are abstract outlets ` +
+        `and can possibly expand into multiple elements. ` +
+        `Use the key on a wrapping element instead.`
+      )
+    }
+  } else {
+    const slotTarget = getBindingAttr(el, 'slot')
+    if (slotTarget) {
+      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget
+    }
+    if (el.tag === 'template') {
+      el.slotScope = getAndRemoveAttr(el, 'scope')
+    }
+  }
+}
+
+function processComponent (el) {
+  let binding
+  if ((binding = getBindingAttr(el, 'is'))) {
+    el.component = binding
+  }
+  if (getAndRemoveAttr(el, 'inline-template') != null) {
+    el.inlineTemplate = true
+  }
+}
+
+function processAttrs (el) {
+  const list = el.attrsList
+  let i, l, name, rawName, value, modifiers, isProp
+  for (i = 0, l = list.length; i < l; i++) {
+    name = rawName = list[i].name
+    value = list[i].value
+    if (dirRE.test(name)) {
+      // mark element as dynamic
+      el.hasBindings = true
+      // modifiers
+      modifiers = parseModifiers(name)
+      if (modifiers) {
+        name = name.replace(modifierRE, '')
+      }
+      if (bindRE.test(name)) { // v-bind
+        name = name.replace(bindRE, '')
+        value = parseFilters(value)
+        isProp = false
+        if (modifiers) {
+          if (modifiers.prop) {
+            isProp = true
+            name = camelize(name)
+            if (name === 'innerHtml') name = 'innerHTML'
+          }
+          if (modifiers.camel) {
+            name = camelize(name)
+          }
+          if (modifiers.sync) {
+            addHandler(
+              el,
+              `update:${camelize(name)}`,
+              genAssignmentCode(value, `$event`)
+            )
+          }
+        }
+        if (isProp || platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+          addProp(el, name, value)
+        } else {
+          addAttr(el, name, value)
+        }
+      } else if (onRE.test(name)) { // v-on
+        name = name.replace(onRE, '')
+        addHandler(el, name, value, modifiers, false, warn)
+      } else { // normal directives
+        name = name.replace(dirRE, '')
+        // parse arg
+        const argMatch = name.match(argRE)
+        const arg = argMatch && argMatch[1]
+        if (arg) {
+          name = name.slice(0, -(arg.length + 1))
+        }
+        addDirective(el, name, rawName, value, arg, modifiers)
+        if (process.env.NODE_ENV !== 'production' && name === 'model') {
+          checkForAliasModel(el, value)
+        }
+      }
+    } else {
+      // literal attribute
+      if (process.env.NODE_ENV !== 'production') {
+        const expression = parseText(value, delimiters)
+        if (expression) {
+          warn(
+            `${name}="${value}": ` +
+            'Interpolation inside attributes has been removed. ' +
+            'Use v-bind or the colon shorthand instead. For example, ' +
+            'instead of <div id="{{ val }}">, use <div :id="val">.'
+          )
+        }
+      }
+      addAttr(el, name, JSON.stringify(value))
+    }
+  }
+}
+
+function checkInFor (el: ASTElement): boolean {
+  let parent = el
+  while (parent) {
+    if (parent.for !== undefined) {
+      return true
+    }
+    parent = parent.parent
+  }
+  return false
+}
+
+function parseModifiers (name: string): Object | void {
+  const match = name.match(modifierRE)
+  if (match) {
+    const ret = {}
+    match.forEach(m => { ret[m.slice(1)] = true })
+    return ret
+  }
+}
+
+function makeAttrsMap (attrs: Array<Object>): Object {
+  const map = {}
+  for (let i = 0, l = attrs.length; i < l; i++) {
+    if (
+      process.env.NODE_ENV !== 'production' &&
+      map[attrs[i].name] && !isIE && !isEdge
+    ) {
+      warn('duplicate attribute: ' + attrs[i].name)
+    }
+    map[attrs[i].name] = attrs[i].value
+  }
+  return map
+}
+
+// for script (e.g. type="x/template") or style, do not decode content
+function isTextTag (el): boolean {
+  return el.tag === 'script' || el.tag === 'style'
+}
+
+function isForbiddenTag (el): boolean {
+  return (
+    el.tag === 'style' ||
+    (el.tag === 'script' && (
+      !el.attrsMap.type ||
+      el.attrsMap.type === 'text/javascript'
+    ))
+  )
+}
+
+const ieNSBug = /^xmlns:NS\d+/
+const ieNSPrefix = /^NS\d+:/
+
+/* istanbul ignore next */
+function guardIESVGBug (attrs) {
+  const res = []
+  for (let i = 0; i < attrs.length; i++) {
+    const attr = attrs[i]
+    if (!ieNSBug.test(attr.name)) {
+      attr.name = attr.name.replace(ieNSPrefix, '')
+      res.push(attr)
+    }
+  }
+  return res
+}
+
+function checkForAliasModel (el, value) {
+  let _el = el
+  while (_el) {
+    if (_el.for && _el.alias === value) {
+      warn(
+        `<${el.tag} v-model="${value}">: ` +
+        `You are binding v-model directly to a v-for iteration alias. ` +
+        `This will not be able to modify the v-for source array because ` +
+        `writing to the alias is like modifying a function local variable. ` +
+        `Consider using an array of objects and use v-model on an object property instead.`
+      )
+    }
+    _el = _el.parent
+  }
+}

node_modules/vue/src/compiler/parser/text-parser.js

@@ -0,0 +1,41 @@
+/* @flow */
+
+import { cached } from 'shared/util'
+import { parseFilters } from './filter-parser'
+
+const defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g
+const regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g
+
+const buildRegex = cached(delimiters => {
+  const open = delimiters[0].replace(regexEscapeRE, '\\$&')
+  const close = delimiters[1].replace(regexEscapeRE, '\\$&')
+  return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
+})
+
+export function parseText (
+  text: string,
+  delimiters?: [string, string]
+): string | void {
+  const tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE
+  if (!tagRE.test(text)) {
+    return
+  }
+  const tokens = []
+  let lastIndex = tagRE.lastIndex = 0
+  let match, index
+  while ((match = tagRE.exec(text))) {
+    index = match.index
+    // push text token
+    if (index > lastIndex) {
+      tokens.push(JSON.stringify(text.slice(lastIndex, index)))
+    }
+    // tag token
+    const exp = parseFilters(match[1].trim())
+    tokens.push(`_s(${exp})`)
+    lastIndex = index + match[0].length
+  }
+  if (lastIndex < text.length) {
+    tokens.push(JSON.stringify(text.slice(lastIndex)))
+  }
+  return tokens.join('+')
+}

node_modules/vue/src/core/components/index.js

@@ -0,0 +1,5 @@
+import KeepAlive from './keep-alive'
+
+export default {
+  KeepAlive
+}

node_modules/vue/src/core/components/keep-alive.js

@@ -0,0 +1,99 @@
+/* @flow */
+
+import { isRegExp } from 'shared/util'
+import { getFirstComponentChild } from 'core/vdom/helpers/index'
+
+type VNodeCache = { [key: string]: ?VNode };
+
+const patternTypes: Array<Function> = [String, RegExp]
+
+function getComponentName (opts: ?VNodeComponentOptions): ?string {
+  return opts && (opts.Ctor.options.name || opts.tag)
+}
+
+function matches (pattern: string | RegExp, name: string): boolean {
+  if (typeof pattern === 'string') {
+    return pattern.split(',').indexOf(name) > -1
+  } else if (isRegExp(pattern)) {
+    return pattern.test(name)
+  }
+  /* istanbul ignore next */
+  return false
+}
+
+function pruneCache (cache: VNodeCache, current: VNode, filter: Function) {
+  for (const key in cache) {
+    const cachedNode: ?VNode = cache[key]
+    if (cachedNode) {
+      const name: ?string = getComponentName(cachedNode.componentOptions)
+      if (name && !filter(name)) {
+        if (cachedNode !== current) {
+          pruneCacheEntry(cachedNode)
+        }
+        cache[key] = null
+      }
+    }
+  }
+}
+
+function pruneCacheEntry (vnode: ?VNode) {
+  if (vnode) {
+    vnode.componentInstance.$destroy()
+  }
+}
+
+export default {
+  name: 'keep-alive',
+  abstract: true,
+
+  props: {
+    include: patternTypes,
+    exclude: patternTypes
+  },
+
+  created () {
+    this.cache = Object.create(null)
+  },
+
+  destroyed () {
+    for (const key in this.cache) {
+      pruneCacheEntry(this.cache[key])
+    }
+  },
+
+  watch: {
+    include (val: string | RegExp) {
+      pruneCache(this.cache, this._vnode, name => matches(val, name))
+    },
+    exclude (val: string | RegExp) {
+      pruneCache(this.cache, this._vnode, name => !matches(val, name))
+    }
+  },
+
+  render () {
+    const vnode: VNode = getFirstComponentChild(this.$slots.default)
+    const componentOptions: ?VNodeComponentOptions = vnode && vnode.componentOptions
+    if (componentOptions) {
+      // check pattern
+      const name: ?string = getComponentName(componentOptions)
+      if (name && (
+        (this.include && !matches(this.include, name)) ||
+        (this.exclude && matches(this.exclude, name))
+      )) {
+        return vnode
+      }
+      const key: ?string = vnode.key == null
+        // same constructor may get registered as different local components
+        // so cid alone is not enough (#3269)
+        ? componentOptions.Ctor.cid + (componentOptions.tag ? `::${componentOptions.tag}` : '')
+        : vnode.key
+      if (this.cache[key]) {
+        vnode.componentInstance = this.cache[key].componentInstance
+      } else {
+        this.cache[key] = vnode
+      }
+      vnode.data.keepAlive = true
+    }
+    return vnode
+  }
+}

node_modules/vue/src/core/config.js

@@ -0,0 +1,113 @@
+/* @flow */
+
+import {
+  no,
+  noop,
+  identity
+} from 'shared/util'
+
+import { LIFECYCLE_HOOKS } from 'shared/constants'
+
+export type Config = {
+  // user
+  optionMergeStrategies: { [key: string]: Function };
+  silent: boolean;
+  productionTip: boolean;
+  performance: boolean;
+  devtools: boolean;
+  errorHandler: ?(err: Error, vm: Component, info: string) => void;
+  ignoredElements: Array<string>;
+  keyCodes: { [key: string]: number | Array<number> };
+
+  // platform
+  isReservedTag: (x?: string) => boolean;
+  isReservedAttr: (x?: string) => boolean;
+  parsePlatformTagName: (x: string) => string;
+  isUnknownElement: (x?: string) => boolean;
+  getTagNamespace: (x?: string) => string | void;
+  mustUseProp: (tag: string, type: ?string, name: string) => boolean;
+
+  // legacy
+  _lifecycleHooks: Array<string>;
+};
+
+export default ({
+  /**
+   * Option merge strategies (used in core/util/options)
+   */
+  optionMergeStrategies: Object.create(null),
+
+  /**
+   * Whether to suppress warnings.
+   */
+  silent: false,
+
+  /**
+   * Show production mode tip message on boot?
+   */
+  productionTip: process.env.NODE_ENV !== 'production',
+
+  /**
+   * Whether to enable devtools
+   */
+  devtools: process.env.NODE_ENV !== 'production',
+
+  /**
+   * Whether to record perf
+   */
+  performance: false,
+
+  /**
+   * Error handler for watcher errors
+   */
+  errorHandler: null,
+
+  /**
+   * Ignore certain custom elements
+   */
+  ignoredElements: [],
+
+  /**
+   * Custom user key aliases for v-on
+   */
+  keyCodes: Object.create(null),
+
+  /**
+   * Check if a tag is reserved so that it cannot be registered as a
+   * component. This is platform-dependent and may be overwritten.
+   */
+  isReservedTag: no,
+
+  /**
+   * Check if an attribute is reserved so that it cannot be used as a component
+   * prop. This is platform-dependent and may be overwritten.
+   */
+  isReservedAttr: no,
+
+  /**
+   * Check if a tag is an unknown element.
+   * Platform-dependent.
+   */
+  isUnknownElement: no,
+
+  /**
+   * Get the namespace of an element
+   */
+  getTagNamespace: noop,
+
+  /**
+   * Parse the real tag name for the specific platform.
+   */
+  parsePlatformTagName: identity,
+
+  /**
+   * Check if an attribute must be bound using property, e.g. value
+   * Platform-dependent.
+   */
+  mustUseProp: no,
+
+  /**
+   * Exposed for legacy reasons
+   */
+  _lifecycleHooks: LIFECYCLE_HOOKS
+}: Config)

node_modules/vue/src/core/global-api/assets.js

@@ -0,0 +1,40 @@
+/* @flow */
+
+import config from '../config'
+import { ASSET_TYPES } from 'shared/constants'
+import { warn, isPlainObject } from '../util/index'
+
+export function initAssetRegisters (Vue: GlobalAPI) {
+  /**
+   * Create asset registration methods.
+   */
+  ASSET_TYPES.forEach(type => {
+    Vue[type] = function (
+      id: string,
+      definition: Function | Object
+    ): Function | Object | void {
+      if (!definition) {
+        return this.options[type + 's'][id]
+      } else {
+        /* istanbul ignore if */
+        if (process.env.NODE_ENV !== 'production') {
+          if (type === 'component' && config.isReservedTag(id)) {
+            warn(
+              'Do not use built-in or reserved HTML elements as component ' +
+              'id: ' + id
+            )
+          }
+        }
+        if (type === 'component' && isPlainObject(definition)) {
+          definition.name = definition.name || id
+          definition = this.options._base.extend(definition)
+        }
+        if (type === 'directive' && typeof definition === 'function') {
+          definition = { bind: definition, update: definition }
+        }
+        this.options[type + 's'][id] = definition
+        return definition
+      }
+    }
+  })
+}

node_modules/vue/src/core/global-api/extend.js

@@ -0,0 +1,101 @@
+/* @flow */
+
+import { ASSET_TYPES } from 'shared/constants'
+import { warn, extend, mergeOptions } from '../util/index'
+import { defineComputed, proxy } from '../instance/state'
+
+export function initExtend (Vue: GlobalAPI) {
+  /**
+   * Each instance constructor, including Vue, has a unique
+   * cid. This enables us to create wrapped "child
+   * constructors" for prototypal inheritance and cache them.
+   */
+  Vue.cid = 0
+  let cid = 1
+
+  /**
+   * Class inheritance
+   */
+  Vue.extend = function (extendOptions: Object): Function {
+    extendOptions = extendOptions || {}
+    const Super = this
+    const SuperId = Super.cid
+    const cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {})
+    if (cachedCtors[SuperId]) {
+      return cachedCtors[SuperId]
+    }
+
+    const name = extendOptions.name || Super.options.name
+    if (process.env.NODE_ENV !== 'production') {
+      if (!/^[a-zA-Z][\w-]*$/.test(name)) {
+        warn(
+          'Invalid component name: "' + name + '". Component names ' +
+          'can only contain alphanumeric characters and the hyphen, ' +
+          'and must start with a letter.'
+        )
+      }
+    }
+
+    const Sub = function VueComponent (options) {
+      this._init(options)
+    }
+    Sub.prototype = Object.create(Super.prototype)
+    Sub.prototype.constructor = Sub
+    Sub.cid = cid++
+    Sub.options = mergeOptions(
+      Super.options,
+      extendOptions
+    )
+    Sub['super'] = Super
+
+    // For props and computed properties, we define the proxy getters on
+    // the Vue instances at extension time, on the extended prototype. This
+    // avoids Object.defineProperty calls for each instance created.
+    if (Sub.options.props) {
+      initProps(Sub)
+    }
+    if (Sub.options.computed) {
+      initComputed(Sub)
+    }
+
+    // allow further extension/mixin/plugin usage
+    Sub.extend = Super.extend
+    Sub.mixin = Super.mixin
+    Sub.use = Super.use
+
+    // create asset registers, so extended classes
+    // can have their private assets too.
+    ASSET_TYPES.forEach(function (type) {
+      Sub[type] = Super[type]
+    })
+    // enable recursive self-lookup
+    if (name) {
+      Sub.options.components[name] = Sub
+    }
+
+    // keep a reference to the super options at extension time.
+    // later at instantiation we can check if Super's options have
+    // been updated.
+    Sub.superOptions = Super.options
+    Sub.extendOptions = extendOptions
+    Sub.sealedOptions = extend({}, Sub.options)
+
+    // cache constructor
+    cachedCtors[SuperId] = Sub
+    return Sub
+  }
+}
+
+function initProps (Comp) {
+  const props = Comp.options.props
+  for (const key in props) {
+    proxy(Comp.prototype, `_props`, key)
+  }
+}
+
+function initComputed (Comp) {
+  const computed = Comp.options.computed
+  for (const key in computed) {
+    defineComputed(Comp.prototype, key, computed[key])
+  }
+}

node_modules/vue/src/core/global-api/index.js

@@ -0,0 +1,62 @@
+/* @flow */
+
+import config from '../config'
+import { initUse } from './use'
+import { initMixin } from './mixin'
+import { initExtend } from './extend'
+import { initAssetRegisters } from './assets'
+import { set, del } from '../observer/index'
+import { ASSET_TYPES } from 'shared/constants'
+import builtInComponents from '../components/index'
+
+import {
+  warn,
+  extend,
+  nextTick,
+  mergeOptions,
+  defineReactive
+} from '../util/index'
+
+export function initGlobalAPI (Vue: GlobalAPI) {
+  // config
+  const configDef = {}
+  configDef.get = () => config
+  if (process.env.NODE_ENV !== 'production') {
+    configDef.set = () => {
+      warn(
+        'Do not replace the Vue.config object, set individual fields instead.'
+      )
+    }
+  }
+  Object.defineProperty(Vue, 'config', configDef)
+
+  // exposed util methods.
+  // NOTE: these are not considered part of the public API - avoid relying on
+  // them unless you are aware of the risk.
+  Vue.util = {
+    warn,
+    extend,
+    mergeOptions,
+    defineReactive
+  }
+
+  Vue.set = set
+  Vue.delete = del
+  Vue.nextTick = nextTick
+
+  Vue.options = Object.create(null)
+  ASSET_TYPES.forEach(type => {
+    Vue.options[type + 's'] = Object.create(null)
+  })
+
+  // this is used to identify the "base" constructor to extend all plain-object
+  // components with in Weex's multi-instance scenarios.
+  Vue.options._base = Vue
+
+  extend(Vue.options.components, builtInComponents)
+
+  initUse(Vue)
+  initMixin(Vue)
+  initExtend(Vue)
+  initAssetRegisters(Vue)
+}

node_modules/vue/src/core/global-api/mixin.js

@@ -0,0 +1,10 @@
+/* @flow */
+
+import { mergeOptions } from '../util/index'
+
+export function initMixin (Vue: GlobalAPI) {
+  Vue.mixin = function (mixin: Object) {
+    this.options = mergeOptions(this.options, mixin)
+    return this
+  }
+}

node_modules/vue/src/core/global-api/use.js

@@ -0,0 +1,22 @@
+/* @flow */
+
+import { toArray } from '../util/index'
+
+export function initUse (Vue: GlobalAPI) {
+  Vue.use = function (plugin: Function | Object) {
+    /* istanbul ignore if */
+    if (plugin.installed) {
+      return this
+    }
+    // additional parameters
+    const args = toArray(arguments, 1)
+    args.unshift(this)
+    if (typeof plugin.install === 'function') {
+      plugin.install.apply(plugin, args)
+    } else if (typeof plugin === 'function') {
+      plugin.apply(null, args)
+    }
+    plugin.installed = true
+    return this
+  }
+}

node_modules/vue/src/core/index.js

@@ -0,0 +1,20 @@
+import Vue from './instance/index'
+import { initGlobalAPI } from './global-api/index'
+import { isServerRendering } from 'core/util/env'
+
+initGlobalAPI(Vue)
+
+Object.defineProperty(Vue.prototype, '$isServer', {
+  get: isServerRendering
+})
+
+Object.defineProperty(Vue.prototype, '$ssrContext', {
+  get () {
+    /* istanbul ignore next */
+    return this.$vnode.ssrContext
+  }
+})
+
+Vue.version = '__VERSION__'
+
+export default Vue

node_modules/vue/src/core/instance/events.js

@@ -0,0 +1,129 @@
+/* @flow */
+
+import { updateListeners } from '../vdom/helpers/index'
+import { toArray, tip, hyphenate, formatComponentName } from '../util/index'
+
+export function initEvents (vm: Component) {
+  vm._events = Object.create(null)
+  vm._hasHookEvent = false
+  // init parent attached events
+  const listeners = vm.$options._parentListeners
+  if (listeners) {
+    updateComponentListeners(vm, listeners)
+  }
+}
+
+let target: Component
+
+function add (event, fn, once) {
+  if (once) {
+    target.$once(event, fn)
+  } else {
+    target.$on(event, fn)
+  }
+}
+
+function remove (event, fn) {
+  target.$off(event, fn)
+}
+
+export function updateComponentListeners (
+  vm: Component,
+  listeners: Object,
+  oldListeners: ?Object
+) {
+  target = vm
+  updateListeners(listeners, oldListeners || {}, add, remove, vm)
+}
+
+export function eventsMixin (Vue: Class<Component>) {
+  const hookRE = /^hook:/
+  Vue.prototype.$on = function (event: string | Array<string>, fn: Function): Component {
+    const vm: Component = this
+    if (Array.isArray(event)) {
+      for (let i = 0, l = event.length; i < l; i++) {
+        this.$on(event[i], fn)
+      }
+    } else {
+      (vm._events[event] || (vm._events[event] = [])).push(fn)
+      // optimize hook:event cost by using a boolean flag marked at registration
+      // instead of a hash lookup
+      if (hookRE.test(event)) {
+        vm._hasHookEvent = true
+      }
+    }
+    return vm
+  }
+
+  Vue.prototype.$once = function (event: string, fn: Function): Component {
+    const vm: Component = this
+    function on () {
+      vm.$off(event, on)
+      fn.apply(vm, arguments)
+    }
+    on.fn = fn
+    vm.$on(event, on)
+    return vm
+  }
+
+  Vue.prototype.$off = function (event?: string | Array<string>, fn?: Function): Component {
+    const vm: Component = this
+    // all
+    if (!arguments.length) {
+      vm._events = Object.create(null)
+      return vm
+    }
+    // array of events
+    if (Array.isArray(event)) {
+      for (let i = 0, l = event.length; i < l; i++) {
+        this.$off(event[i], fn)
+      }
+      return vm
+    }
+    // specific event
+    const cbs = vm._events[event]
+    if (!cbs) {
+      return vm
+    }
+    if (arguments.length === 1) {
+      vm._events[event] = null
+      return vm
+    }
+    // specific handler
+    let cb
+    let i = cbs.length
+    while (i--) {
+      cb = cbs[i]
+      if (cb === fn || cb.fn === fn) {
+        cbs.splice(i, 1)
+        break
+      }
+    }
+    return vm
+  }
+
+  Vue.prototype.$emit = function (event: string): Component {
+    const vm: Component = this
+    if (process.env.NODE_ENV !== 'production') {
+      const lowerCaseEvent = event.toLowerCase()
+      if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
+        tip(
+          `Event "${lowerCaseEvent}" is emitted in component ` +
+          `${formatComponentName(vm)} but the handler is registered for "${event}". ` +
+          `Note that HTML attributes are case-insensitive and you cannot use ` +
+          `v-on to listen to camelCase events when using in-DOM templates. ` +
+          `You should probably use "${hyphenate(event)}" instead of "${event}".`
+        )
+      }
+    }
+    let cbs = vm._events[event]
+    if (cbs) {
+      cbs = cbs.length > 1 ? toArray(cbs) : cbs
+      const args = toArray(arguments, 1)
+      for (let i = 0, l = cbs.length; i < l; i++) {
+        cbs[i].apply(vm, args)
+      }
+    }
+    return vm
+  }
+}

node_modules/vue/src/core/instance/index.js

@@ -0,0 +1,23 @@
+import { initMixin } from './init'
+import { stateMixin } from './state'
+import { renderMixin } from './render'
+import { eventsMixin } from './events'
+import { lifecycleMixin } from './lifecycle'
+import { warn } from '../util/index'
+
+function Vue (options) {
+  if (process.env.NODE_ENV !== 'production' &&
+    !(this instanceof Vue)
+  ) {
+    warn('Vue is a constructor and should be called with the `new` keyword')
+  }
+  this._init(options)
+}
+
+initMixin(Vue)
+stateMixin(Vue)
+eventsMixin(Vue)
+lifecycleMixin(Vue)
+renderMixin(Vue)
+
+export default Vue

node_modules/vue/src/core/instance/init.js

@@ -0,0 +1,146 @@
+/* @flow */
+
+import config from '../config'
+import { initProxy } from './proxy'
+import { initState } from './state'
+import { initRender } from './render'
+import { initEvents } from './events'
+import { mark, measure } from '../util/perf'
+import { initLifecycle, callHook } from './lifecycle'
+import { initProvide, initInjections } from './inject'
+import { extend, mergeOptions, formatComponentName } from '../util/index'
+
+let uid = 0
+
+export function initMixin (Vue: Class<Component>) {
+  Vue.prototype._init = function (options?: Object) {
+    const vm: Component = this
+    // a uid
+    vm._uid = uid++
+
+    let startTag, endTag
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+      startTag = `vue-perf-init:${vm._uid}`
+      endTag = `vue-perf-end:${vm._uid}`
+      mark(startTag)
+    }
+
+    // a flag to avoid this being observed
+    vm._isVue = true
+    // merge options
+    if (options && options._isComponent) {
+      // optimize internal component instantiation
+      // since dynamic options merging is pretty slow, and none of the
+      // internal component options needs special treatment.
+      initInternalComponent(vm, options)
+    } else {
+      vm.$options = mergeOptions(
+        resolveConstructorOptions(vm.constructor),
+        options || {},
+        vm
+      )
+    }
+    /* istanbul ignore else */
+    if (process.env.NODE_ENV !== 'production') {
+      initProxy(vm)
+    } else {
+      vm._renderProxy = vm
+    }
+    // expose real self
+    vm._self = vm
+    initLifecycle(vm)
+    initEvents(vm)
+    initRender(vm)
+    callHook(vm, 'beforeCreate')
+    initInjections(vm) // resolve injections before data/props
+    initState(vm)
+    initProvide(vm) // resolve provide after data/props
+    callHook(vm, 'created')
+
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+      vm._name = formatComponentName(vm, false)
+      mark(endTag)
+      measure(`${vm._name} init`, startTag, endTag)
+    }
+
+    if (vm.$options.el) {
+      vm.$mount(vm.$options.el)
+    }
+  }
+}
+
+function initInternalComponent (vm: Component, options: InternalComponentOptions) {
+  const opts = vm.$options = Object.create(vm.constructor.options)
+  // doing this because it's faster than dynamic enumeration.
+  opts.parent = options.parent
+  opts.propsData = options.propsData
+  opts._parentVnode = options._parentVnode
+  opts._parentListeners = options._parentListeners
+  opts._renderChildren = options._renderChildren
+  opts._componentTag = options._componentTag
+  opts._parentElm = options._parentElm
+  opts._refElm = options._refElm
+  if (options.render) {
+    opts.render = options.render
+    opts.staticRenderFns = options.staticRenderFns
+  }
+}
+
+export function resolveConstructorOptions (Ctor: Class<Component>) {
+  let options = Ctor.options
+  if (Ctor.super) {
+    const superOptions = resolveConstructorOptions(Ctor.super)
+    const cachedSuperOptions = Ctor.superOptions
+    if (superOptions !== cachedSuperOptions) {
+      // super option changed,
+      // need to resolve new options.
+      Ctor.superOptions = superOptions
+      // check if there are any late-modified/attached options (#4976)
+      const modifiedOptions = resolveModifiedOptions(Ctor)
+      // update base extend options
+      if (modifiedOptions) {
+        extend(Ctor.extendOptions, modifiedOptions)
+      }
+      options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions)
+      if (options.name) {
+        options.components[options.name] = Ctor
+      }
+    }
+  }
+  return options
+}
+
+function resolveModifiedOptions (Ctor: Class<Component>): ?Object {
+  let modified
+  const latest = Ctor.options
+  const extended = Ctor.extendOptions
+  const sealed = Ctor.sealedOptions
+  for (const key in latest) {
+    if (latest[key] !== sealed[key]) {
+      if (!modified) modified = {}
+      modified[key] = dedupe(latest[key], extended[key], sealed[key])
+    }
+  }
+  return modified
+}
+
+function dedupe (latest, extended, sealed) {
+  // compare latest and sealed to ensure lifecycle hooks won't be duplicated
+  // between merges
+  if (Array.isArray(latest)) {
+    const res = []
+    sealed = Array.isArray(sealed) ? sealed : [sealed]
+    extended = Array.isArray(extended) ? extended : [extended]
+    for (let i = 0; i < latest.length; i++) {
+      // push original options and not sealed options to exclude duplicated options
+      if (extended.indexOf(latest[i]) >= 0 || sealed.indexOf(latest[i]) < 0) {
+        res.push(latest[i])
+      }
+    }
+    return res
+  } else {
+    return latest
+  }
+}

node_modules/vue/src/core/instance/inject.js

@@ -0,0 +1,63 @@
+/* @flow */
+
+import { hasSymbol } from 'core/util/env'
+import { warn } from '../util/index'
+import { defineReactive } from '../observer/index'
+
+export function initProvide (vm: Component) {
+  const provide = vm.$options.provide
+  if (provide) {
+    vm._provided = typeof provide === 'function'
+      ? provide.call(vm)
+      : provide
+  }
+}
+
+export function initInjections (vm: Component) {
+  const result = resolveInject(vm.$options.inject, vm)
+  if (result) {
+    Object.keys(result).forEach(key => {
+      /* istanbul ignore else */
+      if (process.env.NODE_ENV !== 'production') {
+        defineReactive(vm, key, result[key], () => {
+          warn(
+            `Avoid mutating an injected value directly since the changes will be ` +
+            `overwritten whenever the provided component re-renders. ` +
+            `injection being mutated: "${key}"`,
+            vm
+          )
+        })
+      } else {
+        defineReactive(vm, key, result[key])
+      }
+    })
+  }
+}
+
+export function resolveInject (inject: any, vm: Component): ?Object {
+  if (inject) {
+    // inject is :any because flow is not smart enough to figure out cached
+    // isArray here
+    const isArray = Array.isArray(inject)
+    const result = Object.create(null)
+    const keys = isArray
+      ? inject
+      : hasSymbol
+        ? Reflect.ownKeys(inject)
+        : Object.keys(inject)
+
+    for (let i = 0; i < keys.length; i++) {
+      const key = keys[i]
+      const provideKey = isArray ? key : inject[key]
+      let source = vm
+      while (source) {
+        if (source._provided && provideKey in source._provided) {
+          result[key] = source._provided[provideKey]
+          break
+        }
+        source = source.$parent
+      }
+    }
+    return result
+  }
+}

node_modules/vue/src/core/instance/lifecycle.js

@@ -0,0 +1,312 @@
+/* @flow */
+
+import config from '../config'
+import Watcher from '../observer/watcher'
+import { mark, measure } from '../util/perf'
+import { createEmptyVNode } from '../vdom/vnode'
+import { observerState } from '../observer/index'
+import { updateComponentListeners } from './events'
+import { resolveSlots } from './render-helpers/resolve-slots'
+
+import {
+  warn,
+  noop,
+  remove,
+  handleError,
+  emptyObject,
+  validateProp
+} from '../util/index'
+
+export let activeInstance: any = null
+
+export function initLifecycle (vm: Component) {
+  const options = vm.$options
+
+  // locate first non-abstract parent
+  let parent = options.parent
+  if (parent && !options.abstract) {
+    while (parent.$options.abstract && parent.$parent) {
+      parent = parent.$parent
+    }
+    parent.$children.push(vm)
+  }
+
+  vm.$parent = parent
+  vm.$root = parent ? parent.$root : vm
+
+  vm.$children = []
+  vm.$refs = {}
+
+  vm._watcher = null
+  vm._inactive = null
+  vm._directInactive = false
+  vm._isMounted = false
+  vm._isDestroyed = false
+  vm._isBeingDestroyed = false
+}
+
+export function lifecycleMixin (Vue: Class<Component>) {
+  Vue.prototype._update = function (vnode: VNode, hydrating?: boolean) {
+    const vm: Component = this
+    if (vm._isMounted) {
+      callHook(vm, 'beforeUpdate')
+    }
+    const prevEl = vm.$el
+    const prevVnode = vm._vnode
+    const prevActiveInstance = activeInstance
+    activeInstance = vm
+    vm._vnode = vnode
+    // Vue.prototype.__patch__ is injected in entry points
+    // based on the rendering backend used.
+    if (!prevVnode) {
+      // initial render
+      vm.$el = vm.__patch__(
+        vm.$el, vnode, hydrating, false /* removeOnly */,
+        vm.$options._parentElm,
+        vm.$options._refElm
+      )
+    } else {
+      // updates
+      vm.$el = vm.__patch__(prevVnode, vnode)
+    }
+    activeInstance = prevActiveInstance
+    // update __vue__ reference
+    if (prevEl) {
+      prevEl.__vue__ = null
+    }
+    if (vm.$el) {
+      vm.$el.__vue__ = vm
+    }
+    // if parent is an HOC, update its $el as well
+    if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
+      vm.$parent.$el = vm.$el
+    }
+    // updated hook is called by the scheduler to ensure that children are
+    // updated in a parent's updated hook.
+  }
+
+  Vue.prototype.$forceUpdate = function () {
+    const vm: Component = this
+    if (vm._watcher) {
+      vm._watcher.update()
+    }
+  }
+
+  Vue.prototype.$destroy = function () {
+    const vm: Component = this
+    if (vm._isBeingDestroyed) {
+      return
+    }
+    callHook(vm, 'beforeDestroy')
+    vm._isBeingDestroyed = true
+    // remove self from parent
+    const parent = vm.$parent
+    if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
+      remove(parent.$children, vm)
+    }
+    // teardown watchers
+    if (vm._watcher) {
+      vm._watcher.teardown()
+    }
+    let i = vm._watchers.length
+    while (i--) {
+      vm._watchers[i].teardown()
+    }
+    // remove reference from data ob
+    // frozen object may not have observer.
+    if (vm._data.__ob__) {
+      vm._data.__ob__.vmCount--
+    }
+    // call the last hook...
+    vm._isDestroyed = true
+    // invoke destroy hooks on current rendered tree
+    vm.__patch__(vm._vnode, null)
+    // fire destroyed hook
+    callHook(vm, 'destroyed')
+    // turn off all instance listeners.
+    vm.$off()
+    // remove __vue__ reference
+    if (vm.$el) {
+      vm.$el.__vue__ = null
+    }
+    // remove reference to DOM nodes (prevents leak)
+    vm.$options._parentElm = vm.$options._refElm = null
+  }
+}
+
+export function mountComponent (
+  vm: Component,
+  el: ?Element,
+  hydrating?: boolean
+): Component {
+  vm.$el = el
+  if (!vm.$options.render) {
+    vm.$options.render = createEmptyVNode
+    if (process.env.NODE_ENV !== 'production') {
+      /* istanbul ignore if */
+      if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
+        vm.$options.el || el) {
+        warn(
+          'You are using the runtime-only build of Vue where the template ' +
+          'compiler is not available. Either pre-compile the templates into ' +
+          'render functions, or use the compiler-included build.',
+          vm
+        )
+      } else {
+        warn(
+          'Failed to mount component: template or render function not defined.',
+          vm
+        )
+      }
+    }
+  }
+  callHook(vm, 'beforeMount')
+
+  let updateComponent
+  /* istanbul ignore if */
+  if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+    updateComponent = () => {
+      const name = vm._name
+      const id = vm._uid
+      const startTag = `vue-perf-start:${id}`
+      const endTag = `vue-perf-end:${id}`
+
+      mark(startTag)
+      const vnode = vm._render()
+      mark(endTag)
+      measure(`${name} render`, startTag, endTag)
+
+      mark(startTag)
+      vm._update(vnode, hydrating)
+      mark(endTag)
+      measure(`${name} patch`, startTag, endTag)
+    }
+  } else {
+    updateComponent = () => {
+      vm._update(vm._render(), hydrating)
+    }
+  }
+
+  vm._watcher = new Watcher(vm, updateComponent, noop)
+  hydrating = false
+
+  // manually mounted instance, call mounted on self
+  // mounted is called for render-created child components in its inserted hook
+  if (vm.$vnode == null) {
+    vm._isMounted = true
+    callHook(vm, 'mounted')
+  }
+  return vm
+}
+
+export function updateChildComponent (
+  vm: Component,
+  propsData: ?Object,
+  listeners: ?Object,
+  parentVnode: VNode,
+  renderChildren: ?Array<VNode>
+) {
+  // determine whether component has slot children
+  // we need to do this before overwriting $options._renderChildren
+  const hasChildren = !!(
+    renderChildren ||               // has new static slots
+    vm.$options._renderChildren ||  // has old static slots
+    parentVnode.data.scopedSlots || // has new scoped slots
+    vm.$scopedSlots !== emptyObject // has old scoped slots
+  )
+
+  vm.$options._parentVnode = parentVnode
+  vm.$vnode = parentVnode // update vm's placeholder node without re-render
+  if (vm._vnode) { // update child tree's parent
+    vm._vnode.parent = parentVnode
+  }
+  vm.$options._renderChildren = renderChildren
+
+  // update props
+  if (propsData && vm.$options.props) {
+    observerState.shouldConvert = false
+    if (process.env.NODE_ENV !== 'production') {
+      observerState.isSettingProps = true
+    }
+    const props = vm._props
+    const propKeys = vm.$options._propKeys || []
+    for (let i = 0; i < propKeys.length; i++) {
+      const key = propKeys[i]
+      props[key] = validateProp(key, vm.$options.props, propsData, vm)
+    }
+    observerState.shouldConvert = true
+    if (process.env.NODE_ENV !== 'production') {
+      observerState.isSettingProps = false
+    }
+    // keep a copy of raw propsData
+    vm.$options.propsData = propsData
+  }
+  // update listeners
+  if (listeners) {
+    const oldListeners = vm.$options._parentListeners
+    vm.$options._parentListeners = listeners
+    updateComponentListeners(vm, listeners, oldListeners)
+  }
+  // resolve slots + force update if has children
+  if (hasChildren) {
+    vm.$slots = resolveSlots(renderChildren, parentVnode.context)
+    vm.$forceUpdate()
+  }
+}
+
+function isInInactiveTree (vm) {
+  while (vm && (vm = vm.$parent)) {
+    if (vm._inactive) return true
+  }
+  return false
+}
+
+export function activateChildComponent (vm: Component, direct?: boolean) {
+  if (direct) {
+    vm._directInactive = false
+    if (isInInactiveTree(vm)) {
+      return
+    }
+  } else if (vm._directInactive) {
+    return
+  }
+  if (vm._inactive || vm._inactive === null) {
+    vm._inactive = false
+    for (let i = 0; i < vm.$children.length; i++) {
+      activateChildComponent(vm.$children[i])
+    }
+    callHook(vm, 'activated')
+  }
+}
+
+export function deactivateChildComponent (vm: Component, direct?: boolean) {
+  if (direct) {
+    vm._directInactive = true
+    if (isInInactiveTree(vm)) {
+      return
+    }
+  }
+  if (!vm._inactive) {
+    vm._inactive = true
+    for (let i = 0; i < vm.$children.length; i++) {
+      deactivateChildComponent(vm.$children[i])
+    }
+    callHook(vm, 'deactivated')
+  }
+}
+
+export function callHook (vm: Component, hook: string) {
+  const handlers = vm.$options[hook]
+  if (handlers) {
+    for (let i = 0, j = handlers.length; i < j; i++) {
+      try {
+        handlers[i].call(vm)
+      } catch (e) {
+        handleError(e, vm, `${hook} hook`)
+      }
+    }
+  }
+  if (vm._hasHookEvent) {
+    vm.$emit('hook:' + hook)
+  }
+}

node_modules/vue/src/core/instance/proxy.js

@@ -0,0 +1,78 @@
+/* not type checking this file because flow doesn't play well with Proxy */
+
+import config from 'core/config'
+import { warn, makeMap } from '../util/index'
+
+let initProxy
+
+if (process.env.NODE_ENV !== 'production') {
+  const allowedGlobals = makeMap(
+    'Infinity,undefined,NaN,isFinite,isNaN,' +
+    'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
+    'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
+    'require' // for Webpack/Browserify
+  )
+
+  const warnNonPresent = (target, key) => {
+    warn(
+      `Property or method "${key}" is not defined on the instance but ` +
+      `referenced during render. Make sure to declare reactive data ` +
+      `properties in the data option.`,
+      target
+    )
+  }
+
+  const hasProxy =
+    typeof Proxy !== 'undefined' &&
+    Proxy.toString().match(/native code/)
+
+  if (hasProxy) {
+    const isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta')
+    config.keyCodes = new Proxy(config.keyCodes, {
+      set (target, key, value) {
+        if (isBuiltInModifier(key)) {
+          warn(`Avoid overwriting built-in modifier in config.keyCodes: .${key}`)
+          return false
+        } else {
+          target[key] = value
+          return true
+        }
+      }
+    })
+  }
+
+  const hasHandler = {
+    has (target, key) {
+      const has = key in target
+      const isAllowed = allowedGlobals(key) || key.charAt(0) === '_'
+      if (!has && !isAllowed) {
+        warnNonPresent(target, key)
+      }
+      return has || !isAllowed
+    }
+  }
+
+  const getHandler = {
+    get (target, key) {
+      if (typeof key === 'string' && !(key in target)) {
+        warnNonPresent(target, key)
+      }
+      return target[key]
+    }
+  }
+
+  initProxy = function initProxy (vm) {
+    if (hasProxy) {
+      // determine which proxy handler to use
+      const options = vm.$options
+      const handlers = options.render && options.render._withStripped
+        ? getHandler
+        : hasHandler
+      vm._renderProxy = new Proxy(vm, handlers)
+    } else {
+      vm._renderProxy = vm
+    }
+  }
+}
+
+export { initProxy }

node_modules/vue/src/core/instance/render-helpers/bind-object-props.js

@@ -0,0 +1,42 @@
+/* @flow */
+
+import config from 'core/config'
+import { isObject, warn, toObject } from 'core/util/index'
+
+/**
+ * Runtime helper for merging v-bind="object" into a VNode's data.
+ */
+export function bindObjectProps (
+  data: any,
+  tag: string,
+  value: any,
+  asProp?: boolean
+): VNodeData {
+  if (value) {
+    if (!isObject(value)) {
+      process.env.NODE_ENV !== 'production' && warn(
+        'v-bind without argument expects an Object or Array value',
+        this
+      )
+    } else {
+      if (Array.isArray(value)) {
+        value = toObject(value)
+      }
+      let hash
+      for (const key in value) {
+        if (key === 'class' || key === 'style') {
+          hash = data
+        } else {
+          const type = data.attrs && data.attrs.type
+          hash = asProp || config.mustUseProp(tag, type, key)
+            ? data.domProps || (data.domProps = {})
+            : data.attrs || (data.attrs = {})
+        }
+        if (!(key in hash)) {
+          hash[key] = value[key]
+        }
+      }
+    }
+  }
+  return data
+}

node_modules/vue/src/core/instance/render-helpers/check-keycodes.js

@@ -0,0 +1,19 @@
+/* @flow */
+
+import config from 'core/config'
+
+/**
+ * Runtime helper for checking keyCodes from config.
+ */
+export function checkKeyCodes (
+  eventKeyCode: number,
+  key: string,
+  builtInAlias: number | Array<number> | void
+): boolean {
+  const keyCodes = config.keyCodes[key] || builtInAlias
+  if (Array.isArray(keyCodes)) {
+    return keyCodes.indexOf(eventKeyCode) === -1
+  } else {
+    return keyCodes !== eventKeyCode
+  }
+}

node_modules/vue/src/core/instance/render-helpers/render-list.js

@@ -0,0 +1,35 @@
+/* @flow */
+
+import { isObject, isDef } from 'core/util/index'
+
+/**
+ * Runtime helper for rendering v-for lists.
+ */
+export function renderList (
+  val: any,
+  render: () => VNode
+): ?Array<VNode> {
+  let ret: ?Array<VNode>, i, l, keys, key
+  if (Array.isArray(val) || typeof val === 'string') {
+    ret = new Array(val.length)
+    for (i = 0, l = val.length; i < l; i++) {
+      ret[i] = render(val[i], i)
+    }
+  } else if (typeof val === 'number') {
+    ret = new Array(val)
+    for (i = 0; i < val; i++) {
+      ret[i] = render(i + 1, i)
+    }
+  } else if (isObject(val)) {
+    keys = Object.keys(val)
+    ret = new Array(keys.length)
+    for (i = 0, l = keys.length; i < l; i++) {
+      key = keys[i]
+      ret[i] = render(val[key], key, i)
+    }
+  }
+  if (isDef(ret)) {
+    (ret: any)._isVList = true
+  }
+  return ret
+}

node_modules/vue/src/core/instance/render-helpers/render-slot.js

@@ -0,0 +1,34 @@
+/* @flow */
+
+import { extend, warn } from 'core/util/index'
+
+/**
+ * Runtime helper for rendering <slot>
+ */
+export function renderSlot (
+  name: string,
+  fallback: ?Array<VNode>,
+  props: ?Object,
+  bindObject: ?Object
+): ?Array<VNode> {
+  const scopedSlotFn = this.$scopedSlots[name]
+  if (scopedSlotFn) { // scoped slot
+    props = props || {}
+    if (bindObject) {
+      extend(props, bindObject)
+    }
+    return scopedSlotFn(props) || fallback
+  } else {
+    const slotNodes = this.$slots[name]
+    // warn duplicate slot usage
+    if (slotNodes && process.env.NODE_ENV !== 'production') {
+      slotNodes._rendered && warn(
+        `Duplicate presence of slot "${name}" found in the same render tree ` +
+        `- this will likely cause render errors.`,
+        this
+      )
+      slotNodes._rendered = true
+    }
+    return slotNodes || fallback
+  }
+}

node_modules/vue/src/core/instance/render-helpers/render-static.js

@@ -0,0 +1,60 @@
+/* @flow */
+
+import { cloneVNode, cloneVNodes } from 'core/vdom/vnode'
+
+/**
+ * Runtime helper for rendering static trees.
+ */
+export function renderStatic (
+  index: number,
+  isInFor?: boolean
+): VNode | Array<VNode> {
+  let tree = this._staticTrees[index]
+  // if has already-rendered static tree and not inside v-for,
+  // we can reuse the same tree by doing a shallow clone.
+  if (tree && !isInFor) {
+    return Array.isArray(tree)
+      ? cloneVNodes(tree)
+      : cloneVNode(tree)
+  }
+  // otherwise, render a fresh tree.
+  tree = this._staticTrees[index] =
+    this.$options.staticRenderFns[index].call(this._renderProxy)
+  markStatic(tree, `__static__${index}`, false)
+  return tree
+}
+
+/**
+ * Runtime helper for v-once.
+ * Effectively it means marking the node as static with a unique key.
+ */
+export function markOnce (
+  tree: VNode | Array<VNode>,
+  index: number,
+  key: string
+) {
+  markStatic(tree, `__once__${index}${key ? `_${key}` : ``}`, true)
+  return tree
+}
+
+function markStatic (
+  tree: VNode | Array<VNode>,
+  key: string,
+  isOnce: boolean
+) {
+  if (Array.isArray(tree)) {
+    for (let i = 0; i < tree.length; i++) {
+      if (tree[i] && typeof tree[i] !== 'string') {
+        markStaticNode(tree[i], `${key}_${i}`, isOnce)
+      }
+    }
+  } else {
+    markStaticNode(tree, key, isOnce)
+  }
+}
+
+function markStaticNode (node, key, isOnce) {
+  node.isStatic = true
+  node.key = key
+  node.isOnce = isOnce
+}

node_modules/vue/src/core/instance/render-helpers/resolve-filter.js

@@ -0,0 +1,10 @@
+/* @flow */
+
+import { identity, resolveAsset } from 'core/util/index'
+
+/**
+ * Runtime helper for resolving filters
+ */
+export function resolveFilter (id: string): Function {
+  return resolveAsset(this.$options, 'filters', id, true) || identity
+}

node_modules/vue/src/core/instance/render-helpers/resolve-slots.js

@@ -0,0 +1,57 @@
+/* @flow */
+
+/**
+ * Runtime helper for resolving raw children VNodes into a slot object.
+ */
+export function resolveSlots (
+  children: ?Array<VNode>,
+  context: ?Component
+): { [key: string]: Array<VNode> } {
+  const slots = {}
+  if (!children) {
+    return slots
+  }
+  const defaultSlot = []
+  for (let i = 0, l = children.length; i < l; i++) {
+    const child = children[i]
+    // named slots should only be respected if the vnode was rendered in the
+    // same context.
+    if ((child.context === context || child.functionalContext === context) &&
+      child.data && child.data.slot != null
+    ) {
+      const name = child.data.slot
+      const slot = (slots[name] || (slots[name] = []))
+      if (child.tag === 'template') {
+        slot.push.apply(slot, child.children)
+      } else {
+        slot.push(child)
+      }
+    } else {
+      defaultSlot.push(child)
+    }
+  }
+  // ignore whitespace
+  if (!defaultSlot.every(isWhitespace)) {
+    slots.default = defaultSlot
+  }
+  return slots
+}
+
+function isWhitespace (node: VNode): boolean {
+  return node.isComment || node.text === ' '
+}
+
+export function resolveScopedSlots (
+  fns: ScopedSlotsData, // see flow/vnode
+  res?: Object
+): { [key: string]: Function } {
+  res = res || {}
+  for (let i = 0; i < fns.length; i++) {
+    if (Array.isArray(fns[i])) {
+      resolveScopedSlots(fns[i], res)
+    } else {
+      res[fns[i].key] = fns[i].fn
+    }
+  }
+  return res
+}

node_modules/vue/src/core/instance/render.js

@@ -0,0 +1,124 @@
+/* @flow */
+
+import {
+  warn,
+  nextTick,
+  toNumber,
+  toString,
+  looseEqual,
+  emptyObject,
+  handleError,
+  looseIndexOf
+} from '../util/index'
+
+import VNode, {
+  cloneVNodes,
+  createTextVNode,
+  createEmptyVNode
+} from '../vdom/vnode'
+
+import { createElement } from '../vdom/create-element'
+import { renderList } from './render-helpers/render-list'
+import { renderSlot } from './render-helpers/render-slot'
+import { resolveFilter } from './render-helpers/resolve-filter'
+import { checkKeyCodes } from './render-helpers/check-keycodes'
+import { bindObjectProps } from './render-helpers/bind-object-props'
+import { renderStatic, markOnce } from './render-helpers/render-static'
+import { resolveSlots, resolveScopedSlots } from './render-helpers/resolve-slots'
+
+export function initRender (vm: Component) {
+  vm._vnode = null // the root of the child tree
+  vm._staticTrees = null
+  const parentVnode = vm.$vnode = vm.$options._parentVnode // the placeholder node in parent tree
+  const renderContext = parentVnode && parentVnode.context
+  vm.$slots = resolveSlots(vm.$options._renderChildren, renderContext)
+  vm.$scopedSlots = emptyObject
+  // bind the createElement fn to this instance
+  // so that we get proper render context inside it.
+  // args order: tag, data, children, normalizationType, alwaysNormalize
+  // internal version is used by render functions compiled from templates
+  vm._c = (a, b, c, d) => createElement(vm, a, b, c, d, false)
+  // normalization is always applied for the public version, used in
+  // user-written render functions.
+  vm.$createElement = (a, b, c, d) => createElement(vm, a, b, c, d, true)
+}
+
+export function renderMixin (Vue: Class<Component>) {
+  Vue.prototype.$nextTick = function (fn: Function) {
+    return nextTick(fn, this)
+  }
+
+  Vue.prototype._render = function (): VNode {
+    const vm: Component = this
+    const {
+      render,
+      staticRenderFns,
+      _parentVnode
+    } = vm.$options
+
+    if (vm._isMounted) {
+      // clone slot nodes on re-renders
+      for (const key in vm.$slots) {
+        vm.$slots[key] = cloneVNodes(vm.$slots[key])
+      }
+    }
+
+    vm.$scopedSlots = (_parentVnode && _parentVnode.data.scopedSlots) || emptyObject
+
+    if (staticRenderFns && !vm._staticTrees) {
+      vm._staticTrees = []
+    }
+    // set parent vnode. this allows render functions to have access
+    // to the data on the placeholder node.
+    vm.$vnode = _parentVnode
+    // render self
+    let vnode
+    try {
+      vnode = render.call(vm._renderProxy, vm.$createElement)
+    } catch (e) {
+      handleError(e, vm, `render function`)
+      // return error render result,
+      // or previous vnode to prevent render error causing blank component
+      /* istanbul ignore else */
+      if (process.env.NODE_ENV !== 'production') {
+        vnode = vm.$options.renderError
+          ? vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e)
+          : vm._vnode
+      } else {
+        vnode = vm._vnode
+      }
+    }
+    // return empty vnode in case the render function errored out
+    if (!(vnode instanceof VNode)) {
+      if (process.env.NODE_ENV !== 'production' && Array.isArray(vnode)) {
+        warn(
+          'Multiple root nodes returned from render function. Render function ' +
+          'should return a single root node.',
+          vm
+        )
+      }
+      vnode = createEmptyVNode()
+    }
+    // set parent
+    vnode.parent = _parentVnode
+    return vnode
+  }
+
+  // internal render helpers.
+  // these are exposed on the instance prototype to reduce generated render
+  // code size.
+  Vue.prototype._o = markOnce
+  Vue.prototype._n = toNumber
+  Vue.prototype._s = toString
+  Vue.prototype._l = renderList
+  Vue.prototype._t = renderSlot
+  Vue.prototype._q = looseEqual
+  Vue.prototype._i = looseIndexOf
+  Vue.prototype._m = renderStatic
+  Vue.prototype._f = resolveFilter
+  Vue.prototype._k = checkKeyCodes
+  Vue.prototype._b = bindObjectProps
+  Vue.prototype._v = createTextVNode
+  Vue.prototype._e = createEmptyVNode
+  Vue.prototype._u = resolveScopedSlots
+}

node_modules/vue/src/core/instance/state.js

@@ -0,0 +1,304 @@
+/* @flow */
+
+import config from '../config'
+import Dep from '../observer/dep'
+import Watcher from '../observer/watcher'
+
+import {
+  set,
+  del,
+  observe,
+  observerState,
+  defineReactive
+} from '../observer/index'
+
+import {
+  warn,
+  bind,
+  noop,
+  hasOwn,
+  isReserved,
+  handleError,
+  validateProp,
+  isPlainObject
+} from '../util/index'
+
+const sharedPropertyDefinition = {
+  enumerable: true,
+  configurable: true,
+  get: noop,
+  set: noop
+}
+
+export function proxy (target: Object, sourceKey: string, key: string) {
+  sharedPropertyDefinition.get = function proxyGetter () {
+    return this[sourceKey][key]
+  }
+  sharedPropertyDefinition.set = function proxySetter (val) {
+    this[sourceKey][key] = val
+  }
+  Object.defineProperty(target, key, sharedPropertyDefinition)
+}
+
+export function initState (vm: Component) {
+  vm._watchers = []
+  const opts = vm.$options
+  if (opts.props) initProps(vm, opts.props)
+  if (opts.methods) initMethods(vm, opts.methods)
+  if (opts.data) {
+    initData(vm)
+  } else {
+    observe(vm._data = {}, true /* asRootData */)
+  }
+  if (opts.computed) initComputed(vm, opts.computed)
+  if (opts.watch) initWatch(vm, opts.watch)
+}
+
+const isReservedProp = {
+  key: 1,
+  ref: 1,
+  slot: 1
+}
+
+function initProps (vm: Component, propsOptions: Object) {
+  const propsData = vm.$options.propsData || {}
+  const props = vm._props = {}
+  // cache prop keys so that future props updates can iterate using Array
+  // instead of dynamic object key enumeration.
+  const keys = vm.$options._propKeys = []
+  const isRoot = !vm.$parent
+  // root instance props should be converted
+  observerState.shouldConvert = isRoot
+  for (const key in propsOptions) {
+    keys.push(key)
+    const value = validateProp(key, propsOptions, propsData, vm)
+    /* istanbul ignore else */
+    if (process.env.NODE_ENV !== 'production') {
+      if (isReservedProp[key] || config.isReservedAttr(key)) {
+        warn(
+          `"${key}" is a reserved attribute and cannot be used as component prop.`,
+          vm
+        )
+      }
+      defineReactive(props, key, value, () => {
+        if (vm.$parent && !observerState.isSettingProps) {
+          warn(
+            `Avoid mutating a prop directly since the value will be ` +
+            `overwritten whenever the parent component re-renders. ` +
+            `Instead, use a data or computed property based on the prop's ` +
+            `value. Prop being mutated: "${key}"`,
+            vm
+          )
+        }
+      })
+    } else {
+      defineReactive(props, key, value)
+    }
+    // static props are already proxied on the component's prototype
+    // during Vue.extend(). We only need to proxy props defined at
+    // instantiation here.
+    if (!(key in vm)) {
+      proxy(vm, `_props`, key)
+    }
+  }
+  observerState.shouldConvert = true
+}
+
+function initData (vm: Component) {
+  let data = vm.$options.data
+  data = vm._data = typeof data === 'function'
+    ? getData(data, vm)
+    : data || {}
+  if (!isPlainObject(data)) {
+    data = {}
+    process.env.NODE_ENV !== 'production' && warn(
+      'data functions should return an object:\n' +
+      'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
+      vm
+    )
+  }
+  // proxy data on instance
+  const keys = Object.keys(data)
+  const props = vm.$options.props
+  let i = keys.length
+  while (i--) {
+    if (props && hasOwn(props, keys[i])) {
+      process.env.NODE_ENV !== 'production' && warn(
+        `The data property "${keys[i]}" is already declared as a prop. ` +
+        `Use prop default value instead.`,
+        vm
+      )
+    } else if (!isReserved(keys[i])) {
+      proxy(vm, `_data`, keys[i])
+    }
+  }
+  // observe data
+  observe(data, true /* asRootData */)
+}
+
+function getData (data: Function, vm: Component): any {
+  try {
+    return data.call(vm)
+  } catch (e) {
+    handleError(e, vm, `data()`)
+    return {}
+  }
+}
+
+const computedWatcherOptions = { lazy: true }
+
+function initComputed (vm: Component, computed: Object) {
+  const watchers = vm._computedWatchers = Object.create(null)
+
+  for (const key in computed) {
+    const userDef = computed[key]
+    let getter = typeof userDef === 'function' ? userDef : userDef.get
+    if (process.env.NODE_ENV !== 'production') {
+      if (getter === undefined) {
+        warn(
+          `No getter function has been defined for computed property "${key}".`,
+          vm
+        )
+        getter = noop
+      }
+    }
+    // create internal watcher for the computed property.
+    watchers[key] = new Watcher(vm, getter, noop, computedWatcherOptions)
+
+    // component-defined computed properties are already defined on the
+    // component prototype. We only need to define computed properties defined
+    // at instantiation here.
+    if (!(key in vm)) {
+      defineComputed(vm, key, userDef)
+    } else if (process.env.NODE_ENV !== 'production') {
+      if (key in vm.$data) {
+        warn(`The computed property "${key}" is already defined in data.`, vm)
+      } else if (vm.$options.props && key in vm.$options.props) {
+        warn(`The computed property "${key}" is already defined as a prop.`, vm)
+      }
+    }
+  }
+}
+
+export function defineComputed (target: any, key: string, userDef: Object | Function) {
+  if (typeof userDef === 'function') {
+    sharedPropertyDefinition.get = createComputedGetter(key)
+    sharedPropertyDefinition.set = noop
+  } else {
+    sharedPropertyDefinition.get = userDef.get
+      ? userDef.cache !== false
+        ? createComputedGetter(key)
+        : userDef.get
+      : noop
+    sharedPropertyDefinition.set = userDef.set
+      ? userDef.set
+      : noop
+  }
+  Object.defineProperty(target, key, sharedPropertyDefinition)
+}
+
+function createComputedGetter (key) {
+  return function computedGetter () {
+    const watcher = this._computedWatchers && this._computedWatchers[key]
+    if (watcher) {
+      if (watcher.dirty) {
+        watcher.evaluate()
+      }
+      if (Dep.target) {
+        watcher.depend()
+      }
+      return watcher.value
+    }
+  }
+}
+
+function initMethods (vm: Component, methods: Object) {
+  const props = vm.$options.props
+  for (const key in methods) {
+    vm[key] = methods[key] == null ? noop : bind(methods[key], vm)
+    if (process.env.NODE_ENV !== 'production') {
+      if (methods[key] == null) {
+        warn(
+          `method "${key}" has an undefined value in the component definition. ` +
+          `Did you reference the function correctly?`,
+          vm
+        )
+      }
+      if (props && hasOwn(props, key)) {
+        warn(
+          `method "${key}" has already been defined as a prop.`,
+          vm
+        )
+      }
+    }
+  }
+}
+
+function initWatch (vm: Component, watch: Object) {
+  for (const key in watch) {
+    const handler = watch[key]
+    if (Array.isArray(handler)) {
+      for (let i = 0; i < handler.length; i++) {
+        createWatcher(vm, key, handler[i])
+      }
+    } else {
+      createWatcher(vm, key, handler)
+    }
+  }
+}
+
+function createWatcher (vm: Component, key: string, handler: any) {
+  let options
+  if (isPlainObject(handler)) {
+    options = handler
+    handler = handler.handler
+  }
+  if (typeof handler === 'string') {
+    handler = vm[handler]
+  }
+  vm.$watch(key, handler, options)
+}
+
+export function stateMixin (Vue: Class<Component>) {
+  // flow somehow has problems with directly declared definition object
+  // when using Object.defineProperty, so we have to procedurally build up
+  // the object here.
+  const dataDef = {}
+  dataDef.get = function () { return this._data }
+  const propsDef = {}
+  propsDef.get = function () { return this._props }
+  if (process.env.NODE_ENV !== 'production') {
+    dataDef.set = function (newData: Object) {
+      warn(
+        'Avoid replacing instance root $data. ' +
+        'Use nested data properties instead.',
+        this
+      )
+    }
+    propsDef.set = function () {
+      warn(`$props is readonly.`, this)
+    }
+  }
+  Object.defineProperty(Vue.prototype, '$data', dataDef)
+  Object.defineProperty(Vue.prototype, '$props', propsDef)
+
+  Vue.prototype.$set = set
+  Vue.prototype.$delete = del
+
+  Vue.prototype.$watch = function (
+    expOrFn: string | Function,
+    cb: Function,
+    options?: Object
+  ): Function {
+    const vm: Component = this
+    options = options || {}
+    options.user = true
+    const watcher = new Watcher(vm, expOrFn, cb, options)
+    if (options.immediate) {
+      cb.call(vm, watcher.value)
+    }
+    return function unwatchFn () {
+      watcher.teardown()
+    }
+  }
+}

node_modules/vue/src/core/observer/array.js

@@ -0,0 +1,53 @@
+/*
+ * not type checking this file because flow doesn't play well with
+ * dynamically accessing methods on Array prototype
+ */
+
+import { def } from '../util/index'
+
+const arrayProto = Array.prototype
+export const arrayMethods = Object.create(arrayProto)
+
+/**
+ * Intercept mutating methods and emit events
+ */
+;[
+  'push',
+  'pop',
+  'shift',
+  'unshift',
+  'splice',
+  'sort',
+  'reverse'
+]
+.forEach(function (method) {
+  // cache original method
+  const original = arrayProto[method]
+  def(arrayMethods, method, function mutator () {
+    // avoid leaking arguments:
+    // http://jsperf.com/closure-with-arguments
+    let i = arguments.length
+    const args = new Array(i)
+    while (i--) {
+      args[i] = arguments[i]
+    }
+    const result = original.apply(this, args)
+    const ob = this.__ob__
+    let inserted
+    switch (method) {
+      case 'push':
+        inserted = args
+        break
+      case 'unshift':
+        inserted = args
+        break
+      case 'splice':
+        inserted = args.slice(2)
+        break
+    }
+    if (inserted) ob.observeArray(inserted)
+    // notify change
+    ob.dep.notify()
+    return result
+  })
+})

node_modules/vue/src/core/observer/dep.js

@@ -0,0 +1,58 @@
+/* @flow */
+
+import type Watcher from './watcher'
+import { remove } from '../util/index'
+
+let uid = 0
+
+/**
+ * A dep is an observable that can have multiple
+ * directives subscribing to it.
+ */
+export default class Dep {
+  static target: ?Watcher;
+  id: number;
+  subs: Array<Watcher>;
+
+  constructor () {
+    this.id = uid++
+    this.subs = []
+  }
+
+  addSub (sub: Watcher) {
+    this.subs.push(sub)
+  }
+
+  removeSub (sub: Watcher) {
+    remove(this.subs, sub)
+  }
+
+  depend () {
+    if (Dep.target) {
+      Dep.target.addDep(this)
+    }
+  }
+
+  notify () {
+    // stabilize the subscriber list first
+    const subs = this.subs.slice()
+    for (let i = 0, l = subs.length; i < l; i++) {
+      subs[i].update()
+    }
+  }
+}
+
+// the current target watcher being evaluated.
+// this is globally unique because there could be only one
+// watcher being evaluated at any time.
+Dep.target = null
+const targetStack = []
+
+export function pushTarget (_target: Watcher) {
+  if (Dep.target) targetStack.push(Dep.target)
+  Dep.target = _target
+}
+
+export function popTarget () {
+  Dep.target = targetStack.pop()
+}

node_modules/vue/src/core/observer/index.js

@@ -0,0 +1,256 @@
+/* @flow */
+
+import Dep from './dep'
+import { arrayMethods } from './array'
+import {
+  def,
+  isObject,
+  isPlainObject,
+  hasProto,
+  hasOwn,
+  warn,
+  isServerRendering
+} from '../util/index'
+
+const arrayKeys = Object.getOwnPropertyNames(arrayMethods)
+
+/**
+ * By default, when a reactive property is set, the new value is
+ * also converted to become reactive. However when passing down props,
+ * we don't want to force conversion because the value may be a nested value
+ * under a frozen data structure. Converting it would defeat the optimization.
+ */
+export const observerState = {
+  shouldConvert: true,
+  isSettingProps: false
+}
+
+/**
+ * Observer class that are attached to each observed
+ * object. Once attached, the observer converts target
+ * object's property keys into getter/setters that
+ * collect dependencies and dispatches updates.
+ */
+export class Observer {
+  value: any;
+  dep: Dep;
+  vmCount: number; // number of vms that has this object as root $data
+
+  constructor (value: any) {
+    this.value = value
+    this.dep = new Dep()
+    this.vmCount = 0
+    def(value, '__ob__', this)
+    if (Array.isArray(value)) {
+      const augment = hasProto
+        ? protoAugment
+        : copyAugment
+      augment(value, arrayMethods, arrayKeys)
+      this.observeArray(value)
+    } else {
+      this.walk(value)
+    }
+  }
+
+  /**
+   * Walk through each property and convert them into
+   * getter/setters. This method should only be called when
+   * value type is Object.
+   */
+  walk (obj: Object) {
+    const keys = Object.keys(obj)
+    for (let i = 0; i < keys.length; i++) {
+      defineReactive(obj, keys[i], obj[keys[i]])
+    }
+  }
+
+  /**
+   * Observe a list of Array items.
+   */
+  observeArray (items: Array<any>) {
+    for (let i = 0, l = items.length; i < l; i++) {
+      observe(items[i])
+    }
+  }
+}
+
+// helpers
+
+/**
+ * Augment an target Object or Array by intercepting
+ * the prototype chain using __proto__
+ */
+function protoAugment (target, src: Object) {
+  /* eslint-disable no-proto */
+  target.__proto__ = src
+  /* eslint-enable no-proto */
+}
+
+/**
+ * Augment an target Object or Array by defining
+ * hidden properties.
+ */
+/* istanbul ignore next */
+function copyAugment (target: Object, src: Object, keys: Array<string>) {
+  for (let i = 0, l = keys.length; i < l; i++) {
+    const key = keys[i]
+    def(target, key, src[key])
+  }
+}
+
+/**
+ * Attempt to create an observer instance for a value,
+ * returns the new observer if successfully observed,
+ * or the existing observer if the value already has one.
+ */
+export function observe (value: any, asRootData: ?boolean): Observer | void {
+  if (!isObject(value)) {
+    return
+  }
+  let ob: Observer | void
+  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
+    ob = value.__ob__
+  } else if (
+    observerState.shouldConvert &&
+    !isServerRendering() &&
+    (Array.isArray(value) || isPlainObject(value)) &&
+    Object.isExtensible(value) &&
+    !value._isVue
+  ) {
+    ob = new Observer(value)
+  }
+  if (asRootData && ob) {
+    ob.vmCount++
+  }
+  return ob
+}
+
+/**
+ * Define a reactive property on an Object.
+ */
+export function defineReactive (
+  obj: Object,
+  key: string,
+  val: any,
+  customSetter?: Function
+) {
+  const dep = new Dep()
+
+  const property = Object.getOwnPropertyDescriptor(obj, key)
+  if (property && property.configurable === false) {
+    return
+  }
+
+  // cater for pre-defined getter/setters
+  const getter = property && property.get
+  const setter = property && property.set
+
+  let childOb = observe(val)
+  Object.defineProperty(obj, key, {
+    enumerable: true,
+    configurable: true,
+    get: function reactiveGetter () {
+      const value = getter ? getter.call(obj) : val
+      if (Dep.target) {
+        dep.depend()
+        if (childOb) {
+          childOb.dep.depend()
+        }
+        if (Array.isArray(value)) {
+          dependArray(value)
+        }
+      }
+      return value
+    },
+    set: function reactiveSetter (newVal) {
+      const value = getter ? getter.call(obj) : val
+      /* eslint-disable no-self-compare */
+      if (newVal === value || (newVal !== newVal && value !== value)) {
+        return
+      }
+      /* eslint-enable no-self-compare */
+      if (process.env.NODE_ENV !== 'production' && customSetter) {
+        customSetter()
+      }
+      if (setter) {
+        setter.call(obj, newVal)
+      } else {
+        val = newVal
+      }
+      childOb = observe(newVal)
+      dep.notify()
+    }
+  })
+}
+
+/**
+ * Set a property on an object. Adds the new property and
+ * triggers change notification if the property doesn't
+ * already exist.
+ */
+export function set (target: Array<any> | Object, key: any, val: any): any {
+  if (Array.isArray(target) && typeof key === 'number') {
+    target.length = Math.max(target.length, key)
+    target.splice(key, 1, val)
+    return val
+  }
+  if (hasOwn(target, key)) {
+    target[key] = val
+    return val
+  }
+  const ob = (target : any).__ob__
+  if (target._isVue || (ob && ob.vmCount)) {
+    process.env.NODE_ENV !== 'production' && warn(
+      'Avoid adding reactive properties to a Vue instance or its root $data ' +
+      'at runtime - declare it upfront in the data option.'
+    )
+    return val
+  }
+  if (!ob) {
+    target[key] = val
+    return val
+  }
+  defineReactive(ob.value, key, val)
+  ob.dep.notify()
+  return val
+}
+
+/**
+ * Delete a property and trigger change if necessary.
+ */
+export function del (target: Array<any> | Object, key: any) {
+  if (Array.isArray(target) && typeof key === 'number') {
+    target.splice(key, 1)
+    return
+  }
+  const ob = (target : any).__ob__
+  if (target._isVue || (ob && ob.vmCount)) {
+    process.env.NODE_ENV !== 'production' && warn(
+      'Avoid deleting properties on a Vue instance or its root $data ' +
+      '- just set it to null.'
+    )
+    return
+  }
+  if (!hasOwn(target, key)) {
+    return
+  }
+  delete target[key]
+  if (!ob) {
+    return
+  }
+  ob.dep.notify()
+}
+
+/**
+ * Collect dependencies on array elements when the array is touched, since
+ * we cannot intercept array element access like property getters.
+ */
+function dependArray (value: Array<any>) {
+  for (let e, i = 0, l = value.length; i < l; i++) {
+    e = value[i]
+    e && e.__ob__ && e.__ob__.dep.depend()
+    if (Array.isArray(e)) {
+      dependArray(e)
+    }
+  }
+}

node_modules/vue/src/core/observer/scheduler.js

@@ -0,0 +1,148 @@
+/* @flow */
+
+import type Watcher from './watcher'
+import config from '../config'
+import { callHook, activateChildComponent } from '../instance/lifecycle'
+
+import {
+  warn,
+  nextTick,
+  devtools
+} from '../util/index'
+
+export const MAX_UPDATE_COUNT = 100
+
+const queue: Array<Watcher> = []
+const activatedChildren: Array<Component> = []
+let has: { [key: number]: ?true } = {}
+let circular: { [key: number]: number } = {}
+let waiting = false
+let flushing = false
+let index = 0
+
+/**
+ * Reset the scheduler's state.
+ */
+function resetSchedulerState () {
+  index = queue.length = activatedChildren.length = 0
+  has = {}
+  if (process.env.NODE_ENV !== 'production') {
+    circular = {}
+  }
+  waiting = flushing = false
+}
+
+/**
+ * Flush both queues and run the watchers.
+ */
+function flushSchedulerQueue () {
+  flushing = true
+  let watcher, id
+
+  // Sort queue before flush.
+  // This ensures that:
+  // 1. Components are updated from parent to child. (because parent is always
+  //    created before the child)
+  // 2. A component's user watchers are run before its render watcher (because
+  //    user watchers are created before the render watcher)
+  // 3. If a component is destroyed during a parent component's watcher run,
+  //    its watchers can be skipped.
+  queue.sort((a, b) => a.id - b.id)
+
+  // do not cache length because more watchers might be pushed
+  // as we run existing watchers
+  for (index = 0; index < queue.length; index++) {
+    watcher = queue[index]
+    id = watcher.id
+    has[id] = null
+    watcher.run()
+    // in dev build, check and stop circular updates.
+    if (process.env.NODE_ENV !== 'production' && has[id] != null) {
+      circular[id] = (circular[id] || 0) + 1
+      if (circular[id] > MAX_UPDATE_COUNT) {
+        warn(
+          'You may have an infinite update loop ' + (
+            watcher.user
+              ? `in watcher with expression "${watcher.expression}"`
+              : `in a component render function.`
+          ),
+          watcher.vm
+        )
+        break
+      }
+    }
+  }
+
+  // keep copies of post queues before resetting state
+  const activatedQueue = activatedChildren.slice()
+  const updatedQueue = queue.slice()
+
+  resetSchedulerState()
+
+  // call component updated and activated hooks
+  callActivatedHooks(activatedQueue)
+  callUpdateHooks(updatedQueue)
+
+  // devtool hook
+  /* istanbul ignore if */
+  if (devtools && config.devtools) {
+    devtools.emit('flush')
+  }
+}
+
+function callUpdateHooks (queue) {
+  let i = queue.length
+  while (i--) {
+    const watcher = queue[i]
+    const vm = watcher.vm
+    if (vm._watcher === watcher && vm._isMounted) {
+      callHook(vm, 'updated')
+    }
+  }
+}
+
+/**
+ * Queue a kept-alive component that was activated during patch.
+ * The queue will be processed after the entire tree has been patched.
+ */
+export function queueActivatedComponent (vm: Component) {
+  // setting _inactive to false here so that a render function can
+  // rely on checking whether it's in an inactive tree (e.g. router-view)
+  vm._inactive = false
+  activatedChildren.push(vm)
+}
+
+function callActivatedHooks (queue) {
+  for (let i = 0; i < queue.length; i++) {
+    queue[i]._inactive = true
+    activateChildComponent(queue[i], true /* true */)
+  }
+}
+
+/**
+ * Push a watcher into the watcher queue.
+ * Jobs with duplicate IDs will be skipped unless it's
+ * pushed when the queue is being flushed.
+ */
+export function queueWatcher (watcher: Watcher) {
+  const id = watcher.id
+  if (has[id] == null) {
+    has[id] = true
+    if (!flushing) {
+      queue.push(watcher)
+    } else {
+      // if already flushing, splice the watcher based on its id
+      // if already past its id, it will be run next immediately.
+      let i = queue.length - 1
+      while (i > index && queue[i].id > watcher.id) {
+        i--
+      }
+      queue.splice(i + 1, 0, watcher)
+    }
+    // queue the flush
+    if (!waiting) {
+      waiting = true
+      nextTick(flushSchedulerQueue)
+    }
+  }
+}

node_modules/vue/src/core/observer/watcher.js

@@ -0,0 +1,268 @@
+/* @flow */
+
+import { queueWatcher } from './scheduler'
+import Dep, { pushTarget, popTarget } from './dep'
+
+import {
+  warn,
+  remove,
+  isObject,
+  parsePath,
+  _Set as Set,
+  handleError
+} from '../util/index'
+
+import type { ISet } from '../util/index'
+
+let uid = 0
+
+/**
+ * A watcher parses an expression, collects dependencies,
+ * and fires callback when the expression value changes.
+ * This is used for both the $watch() api and directives.
+ */
+export default class Watcher {
+  vm: Component;
+  expression: string;
+  cb: Function;
+  id: number;
+  deep: boolean;
+  user: boolean;
+  lazy: boolean;
+  sync: boolean;
+  dirty: boolean;
+  active: boolean;
+  deps: Array<Dep>;
+  newDeps: Array<Dep>;
+  depIds: ISet;
+  newDepIds: ISet;
+  getter: Function;
+  value: any;
+
+  constructor (
+    vm: Component,
+    expOrFn: string | Function,
+    cb: Function,
+    options?: Object
+  ) {
+    this.vm = vm
+    vm._watchers.push(this)
+    // options
+    if (options) {
+      this.deep = !!options.deep
+      this.user = !!options.user
+      this.lazy = !!options.lazy
+      this.sync = !!options.sync
+    } else {
+      this.deep = this.user = this.lazy = this.sync = false
+    }
+    this.cb = cb
+    this.id = ++uid // uid for batching
+    this.active = true
+    this.dirty = this.lazy // for lazy watchers
+    this.deps = []
+    this.newDeps = []
+    this.depIds = new Set()
+    this.newDepIds = new Set()
+    this.expression = process.env.NODE_ENV !== 'production'
+      ? expOrFn.toString()
+      : ''
+    // parse expression for getter
+    if (typeof expOrFn === 'function') {
+      this.getter = expOrFn
+    } else {
+      this.getter = parsePath(expOrFn)
+      if (!this.getter) {
+        this.getter = function () {}
+        process.env.NODE_ENV !== 'production' && warn(
+          `Failed watching path: "${expOrFn}" ` +
+          'Watcher only accepts simple dot-delimited paths. ' +
+          'For full control, use a function instead.',
+          vm
+        )
+      }
+    }
+    this.value = this.lazy
+      ? undefined
+      : this.get()
+  }
+
+  /**
+   * Evaluate the getter, and re-collect dependencies.
+   */
+  get () {
+    pushTarget(this)
+    let value
+    const vm = this.vm
+    if (this.user) {
+      try {
+        value = this.getter.call(vm, vm)
+      } catch (e) {
+        handleError(e, vm, `getter for watcher "${this.expression}"`)
+      }
+    } else {
+      value = this.getter.call(vm, vm)
+    }
+    // "touch" every property so they are all tracked as
+    // dependencies for deep watching
+    if (this.deep) {
+      traverse(value)
+    }
+    popTarget()
+    this.cleanupDeps()
+    return value
+  }
+
+  /**
+   * Add a dependency to this directive.
+   */
+  addDep (dep: Dep) {
+    const id = dep.id
+    if (!this.newDepIds.has(id)) {
+      this.newDepIds.add(id)
+      this.newDeps.push(dep)
+      if (!this.depIds.has(id)) {
+        dep.addSub(this)
+      }
+    }
+  }
+
+  /**
+   * Clean up for dependency collection.
+   */
+  cleanupDeps () {
+    let i = this.deps.length
+    while (i--) {
+      const dep = this.deps[i]
+      if (!this.newDepIds.has(dep.id)) {
+        dep.removeSub(this)
+      }
+    }
+    let tmp = this.depIds
+    this.depIds = this.newDepIds
+    this.newDepIds = tmp
+    this.newDepIds.clear()
+    tmp = this.deps
+    this.deps = this.newDeps
+    this.newDeps = tmp
+    this.newDeps.length = 0
+  }
+
+  /**
+   * Subscriber interface.
+   * Will be called when a dependency changes.
+   */
+  update () {
+    /* istanbul ignore else */
+    if (this.lazy) {
+      this.dirty = true
+    } else if (this.sync) {
+      this.run()
+    } else {
+      queueWatcher(this)
+    }
+  }
+
+  /**
+   * Scheduler job interface.
+   * Will be called by the scheduler.
+   */
+  run () {
+    if (this.active) {
+      const value = this.get()
+      if (
+        value !== this.value ||
+        // Deep watchers and watchers on Object/Arrays should fire even
+        // when the value is the same, because the value may
+        // have mutated.
+        isObject(value) ||
+        this.deep
+      ) {
+        // set new value
+        const oldValue = this.value
+        this.value = value
+        if (this.user) {
+          try {
+            this.cb.call(this.vm, value, oldValue)
+          } catch (e) {
+            handleError(e, this.vm, `callback for watcher "${this.expression}"`)
+          }
+        } else {
+          this.cb.call(this.vm, value, oldValue)
+        }
+      }
+    }
+  }
+
+  /**
+   * Evaluate the value of the watcher.
+   * This only gets called for lazy watchers.
+   */
+  evaluate () {
+    this.value = this.get()
+    this.dirty = false
+  }
+
+  /**
+   * Depend on all deps collected by this watcher.
+   */
+  depend () {
+    let i = this.deps.length
+    while (i--) {
+      this.deps[i].depend()
+    }
+  }
+
+  /**
+   * Remove self from all dependencies' subscriber list.
+   */
+  teardown () {
+    if (this.active) {
+      // remove self from vm's watcher list
+      // this is a somewhat expensive operation so we skip it
+      // if the vm is being destroyed.
+      if (!this.vm._isBeingDestroyed) {
+        remove(this.vm._watchers, this)
+      }
+      let i = this.deps.length
+      while (i--) {
+        this.deps[i].removeSub(this)
+      }
+      this.active = false
+    }
+  }
+}
+
+/**
+ * Recursively traverse an object to evoke all converted
+ * getters, so that every nested property inside the object
+ * is collected as a "deep" dependency.
+ */
+const seenObjects = new Set()
+function traverse (val: any) {
+  seenObjects.clear()
+  _traverse(val, seenObjects)
+}
+
+function _traverse (val: any, seen: ISet) {
+  let i, keys
+  const isA = Array.isArray(val)
+  if ((!isA && !isObject(val)) || !Object.isExtensible(val)) {
+    return
+  }
+  if (val.__ob__) {
+    const depId = val.__ob__.dep.id
+    if (seen.has(depId)) {
+      return
+    }
+    seen.add(depId)
+  }
+  if (isA) {
+    i = val.length
+    while (i--) _traverse(val[i], seen)
+  } else {
+    keys = Object.keys(val)
+    i = keys.length
+    while (i--) _traverse(val[keys[i]], seen)
+  }
+}

node_modules/vue/src/core/util/debug.js

@@ -0,0 +1,99 @@
+/* @flow */
+
+import config from '../config'
+import { noop } from 'shared/util'
+
+export let warn = noop
+export let tip = noop
+export let formatComponentName: Function = (null: any) // work around flow check
+
+if (process.env.NODE_ENV !== 'production') {
+  const hasConsole = typeof console !== 'undefined'
+  const classifyRE = /(?:^|[-_])(\w)/g
+  const classify = str => str
+    .replace(classifyRE, c => c.toUpperCase())
+    .replace(/[-_]/g, '')
+
+  warn = (msg, vm) => {
+    if (hasConsole && (!config.silent)) {
+      console.error(`[Vue warn]: ${msg}` + (
+        vm ? generateComponentTrace(vm) : ''
+      ))
+    }
+  }
+
+  tip = (msg, vm) => {
+    if (hasConsole && (!config.silent)) {
+      console.warn(`[Vue tip]: ${msg}` + (
+        vm ? generateComponentTrace(vm) : ''
+      ))
+    }
+  }
+
+  formatComponentName = (vm, includeFile) => {
+    if (vm.$root === vm) {
+      return '<Root>'
+    }
+    let name = typeof vm === 'string'
+      ? vm
+      : typeof vm === 'function' && vm.options
+        ? vm.options.name
+        : vm._isVue
+          ? vm.$options.name || vm.$options._componentTag
+          : vm.name
+
+    const file = vm._isVue && vm.$options.__file
+    if (!name && file) {
+      const match = file.match(/([^/\\]+)\.vue$/)
+      name = match && match[1]
+    }
+
+    return (
+      (name ? `<${classify(name)}>` : `<Anonymous>`) +
+      (file && includeFile !== false ? ` at ${file}` : '')
+    )
+  }
+
+  const repeat = (str, n) => {
+    let res = ''
+    while (n) {
+      if (n % 2 === 1) res += str
+      if (n > 1) str += str
+      n >>= 1
+    }
+    return res
+  }
+
+  const generateComponentTrace = vm => {
+    if (vm._isVue && vm.$parent) {
+      const tree = []
+      let currentRecursiveSequence = 0
+      while (vm) {
+        if (tree.length > 0) {
+          const last = tree[tree.length - 1]
+          if (last.constructor === vm.constructor) {
+            currentRecursiveSequence++
+            vm = vm.$parent
+            continue
+          } else if (currentRecursiveSequence > 0) {
+            tree[tree.length - 1] = [last, currentRecursiveSequence]
+            currentRecursiveSequence = 0
+          }
+        }
+        tree.push(vm)
+        vm = vm.$parent
+      }
+      return '\n\nfound in\n\n' + tree
+        .map((vm, i) => `${
+          i === 0 ? '---> ' : repeat(' ', 5 + i * 2)
+        }${
+          Array.isArray(vm)
+            ? `${formatComponentName(vm[0])}... (${vm[1]} recursive calls)`
+            : formatComponentName(vm)
+        }`)
+        .join('\n')
+    } else {
+      return `\n\n(found in ${formatComponentName(vm)})`
+    }
+  }
+}

node_modules/vue/src/core/util/env.js

@@ -0,0 +1,180 @@
+/* @flow */
+/* globals MutationObserver */
+
+import { noop } from 'shared/util'
+import { handleError } from './error'
+
+// can we use __proto__?
+export const hasProto = '__proto__' in {}
+
+// Browser environment sniffing
+export const inBrowser = typeof window !== 'undefined'
+export const UA = inBrowser && window.navigator.userAgent.toLowerCase()
+export const isIE = UA && /msie|trident/.test(UA)
+export const isIE9 = UA && UA.indexOf('msie 9.0') > 0
+export const isEdge = UA && UA.indexOf('edge/') > 0
+export const isAndroid = UA && UA.indexOf('android') > 0
+export const isIOS = UA && /iphone|ipad|ipod|ios/.test(UA)
+export const isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge
+
+export let supportsPassive = false
+if (inBrowser) {
+  try {
+    const opts = {}
+    Object.defineProperty(opts, 'passive', ({
+      get () {
+        /* istanbul ignore next */
+        supportsPassive = true
+      }
+    } : Object)) // https://github.com/facebook/flow/issues/285
+    window.addEventListener('test-passive', null, opts)
+  } catch (e) {}
+}
+
+// this needs to be lazy-evaled because vue may be required before
+// vue-server-renderer can set VUE_ENV
+let _isServer
+export const isServerRendering = () => {
+  if (_isServer === undefined) {
+    /* istanbul ignore if */
+    if (!inBrowser && typeof global !== 'undefined') {
+      // detect presence of vue-server-renderer and avoid
+      // Webpack shimming the process
+      _isServer = global['process'].env.VUE_ENV === 'server'
+    } else {
+      _isServer = false
+    }
+  }
+  return _isServer
+}
+
+// detect devtools
+export const devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__
+
+/* istanbul ignore next */
+export function isNative (Ctor: any): boolean {
+  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
+}
+
+export const hasSymbol =
+  typeof Symbol !== 'undefined' && isNative(Symbol) &&
+  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys)
+
+/**
+ * Defer a task to execute it asynchronously.
+ */
+export const nextTick = (function () {
+  const callbacks = []
+  let pending = false
+  let timerFunc
+
+  function nextTickHandler () {
+    pending = false
+    const copies = callbacks.slice(0)
+    callbacks.length = 0
+    for (let i = 0; i < copies.length; i++) {
+      copies[i]()
+    }
+  }
+
+  // the nextTick behavior leverages the microtask queue, which can be accessed
+  // via either native Promise.then or MutationObserver.
+  // MutationObserver has wider support, however it is seriously bugged in
+  // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
+  // completely stops working after triggering a few times... so, if native
+  // Promise is available, we will use it:
+  /* istanbul ignore if */
+  if (typeof Promise !== 'undefined' && isNative(Promise)) {
+    var p = Promise.resolve()
+    var logError = err => { console.error(err) }
+    timerFunc = () => {
+      p.then(nextTickHandler).catch(logError)
+      // in problematic UIWebViews, Promise.then doesn't completely break, but
+      // it can get stuck in a weird state where callbacks are pushed into the
+      // microtask queue but the queue isn't being flushed, until the browser
+      // needs to do some other work, e.g. handle a timer. Therefore we can
+      // "force" the microtask queue to be flushed by adding an empty timer.
+      if (isIOS) setTimeout(noop)
+    }
+  } else if (typeof MutationObserver !== 'undefined' && (
+    isNative(MutationObserver) ||
+    // PhantomJS and iOS 7.x
+    MutationObserver.toString() === '[object MutationObserverConstructor]'
+  )) {
+    // use MutationObserver where native Promise is not available,
+    // e.g. PhantomJS IE11, iOS7, Android 4.4
+    var counter = 1
+    var observer = new MutationObserver(nextTickHandler)
+    var textNode = document.createTextNode(String(counter))
+    observer.observe(textNode, {
+      characterData: true
+    })
+    timerFunc = () => {
+      counter = (counter + 1) % 2
+      textNode.data = String(counter)
+    }
+  } else {
+    // fallback to setTimeout
+    /* istanbul ignore next */
+    timerFunc = () => {
+      setTimeout(nextTickHandler, 0)
+    }
+  }
+
+  return function queueNextTick (cb?: Function, ctx?: Object) {
+    let _resolve
+    callbacks.push(() => {
+      if (cb) {
+        try {
+          cb.call(ctx)
+        } catch (e) {
+          handleError(e, ctx, 'nextTick')
+        }
+      } else if (_resolve) {
+        _resolve(ctx)
+      }
+    })
+    if (!pending) {
+      pending = true
+      timerFunc()
+    }
+    if (!cb && typeof Promise !== 'undefined') {
+      return new Promise((resolve, reject) => {
+        _resolve = resolve
+      })
+    }
+  }
+})()
+
+let _Set
+/* istanbul ignore if */
+if (typeof Set !== 'undefined' && isNative(Set)) {
+  // use native Set when available.
+  _Set = Set
+} else {
+  // a non-standard Set polyfill that only works with primitive keys.
+  _Set = class Set implements ISet {
+    set: Object;
+    constructor () {
+      this.set = Object.create(null)
+    }
+    has (key: string | number) {
+      return this.set[key] === true
+    }
+    add (key: string | number) {
+      this.set[key] = true
+    }
+    clear () {
+      this.set = Object.create(null)
+    }
+  }
+}
+
+interface ISet {
+  has(key: string | number): boolean;
+  add(key: string | number): mixed;
+  clear(): void;
+}
+
+export { _Set }
+export type { ISet }

node_modules/vue/src/core/util/error.js

@@ -0,0 +1,21 @@
+/* @flow */
+
+import config from '../config'
+import { warn } from './debug'
+import { inBrowser } from './env'
+
+export function handleError (err: Error, vm: any, info: string) {
+  if (config.errorHandler) {
+    config.errorHandler.call(null, err, vm, info)
+  } else {
+    if (process.env.NODE_ENV !== 'production') {
+      warn(`Error in ${info}: "${err.toString()}"`, vm)
+    }
+    /* istanbul ignore else */
+    if (inBrowser && typeof console !== 'undefined') {
+      console.error(err)
+    } else {
+      throw err
+    }
+  }
+}

node_modules/vue/src/core/util/index.js

@@ -0,0 +1,10 @@
+/* @flow */
+
+export * from 'shared/util'
+export * from './lang'
+export * from './env'
+export * from './options'
+export * from './debug'
+export * from './props'
+export * from './error'
+export { defineReactive } from '../observer/index'

node_modules/vue/src/core/util/lang.js

@@ -0,0 +1,41 @@
+/* @flow */
+
+export const emptyObject = Object.freeze({})
+
+/**
+ * Check if a string starts with $ or _
+ */
+export function isReserved (str: string): boolean {
+  const c = (str + '').charCodeAt(0)
+  return c === 0x24 || c === 0x5F
+}
+
+/**
+ * Define a property.
+ */
+export function def (obj: Object, key: string, val: any, enumerable?: boolean) {
+  Object.defineProperty(obj, key, {
+    value: val,
+    enumerable: !!enumerable,
+    writable: true,
+    configurable: true
+  })
+}
+
+/**
+ * Parse simple path.
+ */
+const bailRE = /[^\w.$]/
+export function parsePath (path: string): any {
+  if (bailRE.test(path)) {
+    return
+  }
+  const segments = path.split('.')
+  return function (obj) {
+    for (let i = 0; i < segments.length; i++) {
+      if (!obj) return
+      obj = obj[segments[i]]
+    }
+    return obj
+  }
+}

node_modules/vue/src/core/util/options.js

@@ -0,0 +1,341 @@
+/* @flow */
+
+import config from '../config'
+import { warn } from './debug'
+import { set } from '../observer/index'
+
+import {
+  ASSET_TYPES,
+  LIFECYCLE_HOOKS
+} from 'shared/constants'
+
+import {
+  extend,
+  hasOwn,
+  camelize,
+  capitalize,
+  isBuiltInTag,
+  isPlainObject
+} from 'shared/util'
+
+/**
+ * Option overwriting strategies are functions that handle
+ * how to merge a parent option value and a child option
+ * value into the final value.
+ */
+const strats = config.optionMergeStrategies
+
+/**
+ * Options with restrictions
+ */
+if (process.env.NODE_ENV !== 'production') {
+  strats.el = strats.propsData = function (parent, child, vm, key) {
+    if (!vm) {
+      warn(
+        `option "${key}" can only be used during instance ` +
+        'creation with the `new` keyword.'
+      )
+    }
+    return defaultStrat(parent, child)
+  }
+}
+
+/**
+ * Helper that recursively merges two data objects together.
+ */
+function mergeData (to: Object, from: ?Object): Object {
+  if (!from) return to
+  let key, toVal, fromVal
+  const keys = Object.keys(from)
+  for (let i = 0; i < keys.length; i++) {
+    key = keys[i]
+    toVal = to[key]
+    fromVal = from[key]
+    if (!hasOwn(to, key)) {
+      set(to, key, fromVal)
+    } else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
+      mergeData(toVal, fromVal)
+    }
+  }
+  return to
+}
+
+/**
+ * Data
+ */
+strats.data = function (
+  parentVal: any,
+  childVal: any,
+  vm?: Component
+): ?Function {
+  if (!vm) {
+    // in a Vue.extend merge, both should be functions
+    if (!childVal) {
+      return parentVal
+    }
+    if (typeof childVal !== 'function') {
+      process.env.NODE_ENV !== 'production' && warn(
+        'The "data" option should be a function ' +
+        'that returns a per-instance value in component ' +
+        'definitions.',
+        vm
+      )
+      return parentVal
+    }
+    if (!parentVal) {
+      return childVal
+    }
+    // when parentVal & childVal are both present,
+    // we need to return a function that returns the
+    // merged result of both functions... no need to
+    // check if parentVal is a function here because
+    // it has to be a function to pass previous merges.
+    return function mergedDataFn () {
+      return mergeData(
+        childVal.call(this),
+        parentVal.call(this)
+      )
+    }
+  } else if (parentVal || childVal) {
+    return function mergedInstanceDataFn () {
+      // instance merge
+      const instanceData = typeof childVal === 'function'
+        ? childVal.call(vm)
+        : childVal
+      const defaultData = typeof parentVal === 'function'
+        ? parentVal.call(vm)
+        : undefined
+      if (instanceData) {
+        return mergeData(instanceData, defaultData)
+      } else {
+        return defaultData
+      }
+    }
+  }
+}
+
+/**
+ * Hooks and props are merged as arrays.
+ */
+function mergeHook (
+  parentVal: ?Array<Function>,
+  childVal: ?Function | ?Array<Function>
+): ?Array<Function> {
+  return childVal
+    ? parentVal
+      ? parentVal.concat(childVal)
+      : Array.isArray(childVal)
+        ? childVal
+        : [childVal]
+    : parentVal
+}
+
+LIFECYCLE_HOOKS.forEach(hook => {
+  strats[hook] = mergeHook
+})
+
+/**
+ * Assets
+ *
+ * When a vm is present (instance creation), we need to do
+ * a three-way merge between constructor options, instance
+ * options and parent options.
+ */
+function mergeAssets (parentVal: ?Object, childVal: ?Object): Object {
+  const res = Object.create(parentVal || null)
+  return childVal
+    ? extend(res, childVal)
+    : res
+}
+
+ASSET_TYPES.forEach(function (type) {
+  strats[type + 's'] = mergeAssets
+})
+
+/**
+ * Watchers.
+ *
+ * Watchers hashes should not overwrite one
+ * another, so we merge them as arrays.
+ */
+strats.watch = function (parentVal: ?Object, childVal: ?Object): ?Object {
+  /* istanbul ignore if */
+  if (!childVal) return Object.create(parentVal || null)
+  if (!parentVal) return childVal
+  const ret = {}
+  extend(ret, parentVal)
+  for (const key in childVal) {
+    let parent = ret[key]
+    const child = childVal[key]
+    if (parent && !Array.isArray(parent)) {
+      parent = [parent]
+    }
+    ret[key] = parent
+      ? parent.concat(child)
+      : [child]
+  }
+  return ret
+}
+
+/**
+ * Other object hashes.
+ */
+strats.props =
+strats.methods =
+strats.computed = function (parentVal: ?Object, childVal: ?Object): ?Object {
+  if (!childVal) return Object.create(parentVal || null)
+  if (!parentVal) return childVal
+  const ret = Object.create(null)
+  extend(ret, parentVal)
+  extend(ret, childVal)
+  return ret
+}
+
+/**
+ * Default strategy.
+ */
+const defaultStrat = function (parentVal: any, childVal: any): any {
+  return childVal === undefined
+    ? parentVal
+    : childVal
+}
+
+/**
+ * Validate component names
+ */
+function checkComponents (options: Object) {
+  for (const key in options.components) {
+    const lower = key.toLowerCase()
+    if (isBuiltInTag(lower) || config.isReservedTag(lower)) {
+      warn(
+        'Do not use built-in or reserved HTML elements as component ' +
+        'id: ' + key
+      )
+    }
+  }
+}
+
+/**
+ * Ensure all props option syntax are normalized into the
+ * Object-based format.
+ */
+function normalizeProps (options: Object) {
+  const props = options.props
+  if (!props) return
+  const res = {}
+  let i, val, name
+  if (Array.isArray(props)) {
+    i = props.length
+    while (i--) {
+      val = props[i]
+      if (typeof val === 'string') {
+        name = camelize(val)
+        res[name] = { type: null }
+      } else if (process.env.NODE_ENV !== 'production') {
+        warn('props must be strings when using array syntax.')
+      }
+    }
+  } else if (isPlainObject(props)) {
+    for (const key in props) {
+      val = props[key]
+      name = camelize(key)
+      res[name] = isPlainObject(val)
+        ? val
+        : { type: val }
+    }
+  }
+  options.props = res
+}
+
+/**
+ * Normalize raw function directives into object format.
+ */
+function normalizeDirectives (options: Object) {
+  const dirs = options.directives
+  if (dirs) {
+    for (const key in dirs) {
+      const def = dirs[key]
+      if (typeof def === 'function') {
+        dirs[key] = { bind: def, update: def }
+      }
+    }
+  }
+}
+
+/**
+ * Merge two option objects into a new one.
+ * Core utility used in both instantiation and inheritance.
+ */
+export function mergeOptions (
+  parent: Object,
+  child: Object,
+  vm?: Component
+): Object {
+  if (process.env.NODE_ENV !== 'production') {
+    checkComponents(child)
+  }
+
+  if (typeof child === 'function') {
+    child = child.options
+  }
+
+  normalizeProps(child)
+  normalizeDirectives(child)
+  const extendsFrom = child.extends
+  if (extendsFrom) {
+    parent = mergeOptions(parent, extendsFrom, vm)
+  }
+  if (child.mixins) {
+    for (let i = 0, l = child.mixins.length; i < l; i++) {
+      parent = mergeOptions(parent, child.mixins[i], vm)
+    }
+  }
+  const options = {}
+  let key
+  for (key in parent) {
+    mergeField(key)
+  }
+  for (key in child) {
+    if (!hasOwn(parent, key)) {
+      mergeField(key)
+    }
+  }
+  function mergeField (key) {
+    const strat = strats[key] || defaultStrat
+    options[key] = strat(parent[key], child[key], vm, key)
+  }
+  return options
+}
+
+/**
+ * Resolve an asset.
+ * This function is used because child instances need access
+ * to assets defined in its ancestor chain.
+ */
+export function resolveAsset (
+  options: Object,
+  type: string,
+  id: string,
+  warnMissing?: boolean
+): any {
+  /* istanbul ignore if */
+  if (typeof id !== 'string') {
+    return
+  }
+  const assets = options[type]
+  // check local registration variations first
+  if (hasOwn(assets, id)) return assets[id]
+  const camelizedId = camelize(id)
+  if (hasOwn(assets, camelizedId)) return assets[camelizedId]
+  const PascalCaseId = capitalize(camelizedId)
+  if (hasOwn(assets, PascalCaseId)) return assets[PascalCaseId]
+  // fallback to prototype chain
+  const res = assets[id] || assets[camelizedId] || assets[PascalCaseId]
+  if (process.env.NODE_ENV !== 'production' && warnMissing && !res) {
+    warn(
+      'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
+      options
+    )
+  }
+  return res
+}

node_modules/vue/src/core/util/perf.js

@@ -0,0 +1,24 @@
+import { inBrowser } from './env'
+
+export let mark
+export let measure
+
+if (process.env.NODE_ENV !== 'production') {
+  const perf = inBrowser && window.performance
+  /* istanbul ignore if */
+  if (
+    perf &&
+    perf.mark &&
+    perf.measure &&
+    perf.clearMarks &&
+    perf.clearMeasures
+  ) {
+    mark = tag => perf.mark(tag)
+    measure = (name, startTag, endTag) => {
+      perf.measure(name, startTag, endTag)
+      perf.clearMarks(startTag)
+      perf.clearMarks(endTag)
+      perf.clearMeasures(name)
+    }
+  }
+}

node_modules/vue/src/core/util/props.js

@@ -0,0 +1,177 @@
+/* @flow */
+
+import { hasOwn, isObject, isPlainObject, capitalize, hyphenate } from 'shared/util'
+import { observe, observerState } from '../observer/index'
+import { warn } from './debug'
+
+type PropOptions = {
+  type: Function | Array<Function> | null,
+  default: any,
+  required: ?boolean,
+  validator: ?Function
+};
+
+export function validateProp (
+  key: string,
+  propOptions: Object,
+  propsData: Object,
+  vm?: Component
+): any {
+  const prop = propOptions[key]
+  const absent = !hasOwn(propsData, key)
+  let value = propsData[key]
+  // handle boolean props
+  if (isType(Boolean, prop.type)) {
+    if (absent && !hasOwn(prop, 'default')) {
+      value = false
+    } else if (!isType(String, prop.type) && (value === '' || value === hyphenate(key))) {
+      value = true
+    }
+  }
+  // check default value
+  if (value === undefined) {
+    value = getPropDefaultValue(vm, prop, key)
+    // since the default value is a fresh copy,
+    // make sure to observe it.
+    const prevShouldConvert = observerState.shouldConvert
+    observerState.shouldConvert = true
+    observe(value)
+    observerState.shouldConvert = prevShouldConvert
+  }
+  if (process.env.NODE_ENV !== 'production') {
+    assertProp(prop, key, value, vm, absent)
+  }
+  return value
+}
+
+/**
+ * Get the default value of a prop.
+ */
+function getPropDefaultValue (vm: ?Component, prop: PropOptions, key: string): any {
+  // no default, return undefined
+  if (!hasOwn(prop, 'default')) {
+    return undefined
+  }
+  const def = prop.default
+  // warn against non-factory defaults for Object & Array
+  if (process.env.NODE_ENV !== 'production' && isObject(def)) {
+    warn(
+      'Invalid default value for prop "' + key + '": ' +
+      'Props with type Object/Array must use a factory function ' +
+      'to return the default value.',
+      vm
+    )
+  }
+  // the raw prop value was also undefined from previous render,
+  // return previous default value to avoid unnecessary watcher trigger
+  if (vm && vm.$options.propsData &&
+    vm.$options.propsData[key] === undefined &&
+    vm._props[key] !== undefined
+  ) {
+    return vm._props[key]
+  }
+  // call factory function for non-Function types
+  // a value is Function if its prototype is function even across different execution context
+  return typeof def === 'function' && getType(prop.type) !== 'Function'
+    ? def.call(vm)
+    : def
+}
+
+/**
+ * Assert whether a prop is valid.
+ */
+function assertProp (
+  prop: PropOptions,
+  name: string,
+  value: any,
+  vm: ?Component,
+  absent: boolean
+) {
+  if (prop.required && absent) {
+    warn(
+      'Missing required prop: "' + name + '"',
+      vm
+    )
+    return
+  }
+  if (value == null && !prop.required) {
+    return
+  }
+  let type = prop.type
+  let valid = !type || type === true
+  const expectedTypes = []
+  if (type) {
+    if (!Array.isArray(type)) {
+      type = [type]
+    }
+    for (let i = 0; i < type.length && !valid; i++) {
+      const assertedType = assertType(value, type[i])
+      expectedTypes.push(assertedType.expectedType || '')
+      valid = assertedType.valid
+    }
+  }
+  if (!valid) {
+    warn(
+      'Invalid prop: type check failed for prop "' + name + '".' +
+      ' Expected ' + expectedTypes.map(capitalize).join(', ') +
+      ', got ' + Object.prototype.toString.call(value).slice(8, -1) + '.',
+      vm
+    )
+    return
+  }
+  const validator = prop.validator
+  if (validator) {
+    if (!validator(value)) {
+      warn(
+        'Invalid prop: custom validator check failed for prop "' + name + '".',
+        vm
+      )
+    }
+  }
+}
+
+const simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/
+
+function assertType (value: any, type: Function): {
+  valid: boolean;
+  expectedType: string;
+} {
+  let valid
+  const expectedType = getType(type)
+  if (simpleCheckRE.test(expectedType)) {
+    valid = typeof value === expectedType.toLowerCase()
+  } else if (expectedType === 'Object') {
+    valid = isPlainObject(value)
+  } else if (expectedType === 'Array') {
+    valid = Array.isArray(value)
+  } else {
+    valid = value instanceof type
+  }
+  return {
+    valid,
+    expectedType
+  }
+}
+
+/**
+ * Use function string name to check built-in types,
+ * because a simple equality check will fail when running
+ * across different vms / iframes.
+ */
+function getType (fn) {
+  const match = fn && fn.toString().match(/^\s*function (\w+)/)
+  return match ? match[1] : ''
+}
+
+function isType (type, fn) {
+  if (!Array.isArray(fn)) {
+    return getType(fn) === getType(type)
+  }
+  for (let i = 0, len = fn.length; i < len; i++) {
+    if (getType(fn[i]) === getType(type)) {
+      return true
+    }
+  }
+  /* istanbul ignore next */
+  return false
+}

node_modules/vue/src/core/vdom/create-component.js

@@ -0,0 +1,237 @@
+/* @flow */
+
+import VNode from './vnode'
+import { resolveConstructorOptions } from 'core/instance/init'
+import { queueActivatedComponent } from 'core/observer/scheduler'
+import { createFunctionalComponent } from './create-functional-component'
+
+import {
+  warn,
+  isDef,
+  isUndef,
+  isTrue,
+  isObject
+} from '../util/index'
+
+import {
+  resolveAsyncComponent,
+  extractPropsFromVNodeData
+} from './helpers/index'
+
+import {
+  callHook,
+  activeInstance,
+  updateChildComponent,
+  activateChildComponent,
+  deactivateChildComponent
+} from '../instance/lifecycle'
+
+// hooks to be invoked on component VNodes during patch
+const componentVNodeHooks = {
+  init (
+    vnode: VNodeWithData,
+    hydrating: boolean,
+    parentElm: ?Node,
+    refElm: ?Node
+  ): ?boolean {
+    if (!vnode.componentInstance || vnode.componentInstance._isDestroyed) {
+      const child = vnode.componentInstance = createComponentInstanceForVnode(
+        vnode,
+        activeInstance,
+        parentElm,
+        refElm
+      )
+      child.$mount(hydrating ? vnode.elm : undefined, hydrating)
+    } else if (vnode.data.keepAlive) {
+      // kept-alive components, treat as a patch
+      const mountedNode: any = vnode // work around flow
+      componentVNodeHooks.prepatch(mountedNode, mountedNode)
+    }
+  },
+
+  prepatch (oldVnode: MountedComponentVNode, vnode: MountedComponentVNode) {
+    const options = vnode.componentOptions
+    const child = vnode.componentInstance = oldVnode.componentInstance
+    updateChildComponent(
+      child,
+      options.propsData, // updated props
+      options.listeners, // updated listeners
+      vnode, // new parent vnode
+      options.children // new children
+    )
+  },
+
+  insert (vnode: MountedComponentVNode) {
+    const { context, componentInstance } = vnode
+    if (!componentInstance._isMounted) {
+      componentInstance._isMounted = true
+      callHook(componentInstance, 'mounted')
+    }
+    if (vnode.data.keepAlive) {
+      if (context._isMounted) {
+        // vue-router#1212
+        // During updates, a kept-alive component's child components may
+        // change, so directly walking the tree here may call activated hooks
+        // on incorrect children. Instead we push them into a queue which will
+        // be processed after the whole patch process ended.
+        queueActivatedComponent(componentInstance)
+      } else {
+        activateChildComponent(componentInstance, true /* direct */)
+      }
+    }
+  },
+
+  destroy (vnode: MountedComponentVNode) {
+    const { componentInstance } = vnode
+    if (!componentInstance._isDestroyed) {
+      if (!vnode.data.keepAlive) {
+        componentInstance.$destroy()
+      } else {
+        deactivateChildComponent(componentInstance, true /* direct */)
+      }
+    }
+  }
+}
+
+const hooksToMerge = Object.keys(componentVNodeHooks)
+
+export function createComponent (
+  Ctor: Class<Component> | Function | Object | void,
+  data?: VNodeData,
+  context: Component,
+  children: ?Array<VNode>,
+  tag?: string
+): VNode | void {
+  if (isUndef(Ctor)) {
+    return
+  }
+
+  const baseCtor = context.$options._base
+
+  // plain options object: turn it into a constructor
+  if (isObject(Ctor)) {
+    Ctor = baseCtor.extend(Ctor)
+  }
+
+  // if at this stage it's not a constructor or an async component factory,
+  // reject.
+  if (typeof Ctor !== 'function') {
+    if (process.env.NODE_ENV !== 'production') {
+      warn(`Invalid Component definition: ${String(Ctor)}`, context)
+    }
+    return
+  }
+
+  // async component
+  if (isUndef(Ctor.cid)) {
+    Ctor = resolveAsyncComponent(Ctor, baseCtor, context)
+    if (Ctor === undefined) {
+      // return nothing if this is indeed an async component
+      // wait for the callback to trigger parent update.
+      return
+    }
+  }
+
+  // resolve constructor options in case global mixins are applied after
+  // component constructor creation
+  resolveConstructorOptions(Ctor)
+
+  data = data || {}
+
+  // transform component v-model data into props & events
+  if (isDef(data.model)) {
+    transformModel(Ctor.options, data)
+  }
+
+  // extract props
+  const propsData = extractPropsFromVNodeData(data, Ctor, tag)
+
+  // functional component
+  if (isTrue(Ctor.options.functional)) {
+    return createFunctionalComponent(Ctor, propsData, data, context, children)
+  }
+
+  // extract listeners, since these needs to be treated as
+  // child component listeners instead of DOM listeners
+  const listeners = data.on
+  // replace with listeners with .native modifier
+  data.on = data.nativeOn
+
+  if (isTrue(Ctor.options.abstract)) {
+    // abstract components do not keep anything
+    // other than props & listeners
+    data = {}
+  }
+
+  // merge component management hooks onto the placeholder node
+  mergeHooks(data)
+
+  // return a placeholder vnode
+  const name = Ctor.options.name || tag
+  const vnode = new VNode(
+    `vue-component-${Ctor.cid}${name ? `-${name}` : ''}`,
+    data, undefined, undefined, undefined, context,
+    { Ctor, propsData, listeners, tag, children }
+  )
+  return vnode
+}
+
+export function createComponentInstanceForVnode (
+  vnode: any, // we know it's MountedComponentVNode but flow doesn't
+  parent: any, // activeInstance in lifecycle state
+  parentElm?: ?Node,
+  refElm?: ?Node
+): Component {
+  const vnodeComponentOptions = vnode.componentOptions
+  const options: InternalComponentOptions = {
+    _isComponent: true,
+    parent,
+    propsData: vnodeComponentOptions.propsData,
+    _componentTag: vnodeComponentOptions.tag,
+    _parentVnode: vnode,
+    _parentListeners: vnodeComponentOptions.listeners,
+    _renderChildren: vnodeComponentOptions.children,
+    _parentElm: parentElm || null,
+    _refElm: refElm || null
+  }
+  // check inline-template render functions
+  const inlineTemplate = vnode.data.inlineTemplate
+  if (isDef(inlineTemplate)) {
+    options.render = inlineTemplate.render
+    options.staticRenderFns = inlineTemplate.staticRenderFns
+  }
+  return new vnodeComponentOptions.Ctor(options)
+}
+
+function mergeHooks (data: VNodeData) {
+  if (!data.hook) {
+    data.hook = {}
+  }
+  for (let i = 0; i < hooksToMerge.length; i++) {
+    const key = hooksToMerge[i]
+    const fromParent = data.hook[key]
+    const ours = componentVNodeHooks[key]
+    data.hook[key] = fromParent ? mergeHook(ours, fromParent) : ours
+  }
+}
+
+function mergeHook (one: Function, two: Function): Function {
+  return function (a, b, c, d) {
+    one(a, b, c, d)
+    two(a, b, c, d)
+  }
+}
+
+// transform component v-model info (value and callback) into
+// prop and event handler respectively.
+function transformModel (options, data: any) {
+  const prop = (options.model && options.model.prop) || 'value'
+  const event = (options.model && options.model.event) || 'input'
+  ;(data.props || (data.props = {}))[prop] = data.model.value
+  const on = data.on || (data.on = {})
+  if (isDef(on[event])) {
+    on[event] = [data.model.callback].concat(on[event])
+  } else {
+    on[event] = data.model.callback
+  }
+}

node_modules/vue/src/core/vdom/create-element.js

@@ -0,0 +1,125 @@
+/* @flow */
+
+import config from '../config'
+import VNode, { createEmptyVNode } from './vnode'
+import { createComponent } from './create-component'
+
+import {
+  warn,
+  isDef,
+  isUndef,
+  isTrue,
+  isPrimitive,
+  resolveAsset
+} from '../util/index'
+
+import {
+  normalizeChildren,
+  simpleNormalizeChildren
+} from './helpers/index'
+
+const SIMPLE_NORMALIZE = 1
+const ALWAYS_NORMALIZE = 2
+
+// wrapper function for providing a more flexible interface
+// without getting yelled at by flow
+export function createElement (
+  context: Component,
+  tag: any,
+  data: any,
+  children: any,
+  normalizationType: any,
+  alwaysNormalize: boolean
+): VNode {
+  if (Array.isArray(data) || isPrimitive(data)) {
+    normalizationType = children
+    children = data
+    data = undefined
+  }
+  if (isTrue(alwaysNormalize)) {
+    normalizationType = ALWAYS_NORMALIZE
+  }
+  return _createElement(context, tag, data, children, normalizationType)
+}
+
+export function _createElement (
+  context: Component,
+  tag?: string | Class<Component> | Function | Object,
+  data?: VNodeData,
+  children?: any,
+  normalizationType?: number
+): VNode {
+  if (isDef(data) && isDef((data: any).__ob__)) {
+    process.env.NODE_ENV !== 'production' && warn(
+      `Avoid using observed data object as vnode data: ${JSON.stringify(data)}\n` +
+      'Always create fresh vnode data objects in each render!',
+      context
+    )
+    return createEmptyVNode()
+  }
+  if (!tag) {
+    // in case of component :is set to falsy value
+    return createEmptyVNode()
+  }
+  // support single function children as default scoped slot
+  if (Array.isArray(children) &&
+    typeof children[0] === 'function'
+  ) {
+    data = data || {}
+    data.scopedSlots = { default: children[0] }
+    children.length = 0
+  }
+  if (normalizationType === ALWAYS_NORMALIZE) {
+    children = normalizeChildren(children)
+  } else if (normalizationType === SIMPLE_NORMALIZE) {
+    children = simpleNormalizeChildren(children)
+  }
+  let vnode, ns
+  if (typeof tag === 'string') {
+    let Ctor
+    ns = config.getTagNamespace(tag)
+    if (config.isReservedTag(tag)) {
+      // platform built-in elements
+      vnode = new VNode(
+        config.parsePlatformTagName(tag), data, children,
+        undefined, undefined, context
+      )
+    } else if (isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
+      // component
+      vnode = createComponent(Ctor, data, context, children, tag)
+    } else {
+      // unknown or unlisted namespaced elements
+      // check at runtime because it may get assigned a namespace when its
+      // parent normalizes children
+      vnode = new VNode(
+        tag, data, children,
+        undefined, undefined, context
+      )
+    }
+  } else {
+    // direct component options / constructor
+    vnode = createComponent(tag, data, context, children)
+  }
+  if (isDef(vnode)) {
+    if (ns) applyNS(vnode, ns)
+    return vnode
+  } else {
+    return createEmptyVNode()
+  }
+}
+
+function applyNS (vnode, ns) {
+  vnode.ns = ns
+  if (vnode.tag === 'foreignObject') {
+    // use default namespace inside foreignObject
+    return
+  }
+  if (isDef(vnode.children)) {
+    for (let i = 0, l = vnode.children.length; i < l; i++) {
+      const child = vnode.children[i]
+      if (isDef(child.tag) && isUndef(child.ns)) {
+        applyNS(child, ns)
+      }
+    }
+  }
+}

node_modules/vue/src/core/vdom/create-functional-component.js

@@ -0,0 +1,58 @@
+/* @flow */
+
+import VNode from './vnode'
+import { createElement } from './create-element'
+import { resolveInject } from '../instance/inject'
+import { resolveSlots } from '../instance/render-helpers/resolve-slots'
+
+import {
+  isDef,
+  camelize,
+  validateProp
+} from '../util/index'
+
+export function createFunctionalComponent (
+  Ctor: Class<Component>,
+  propsData: ?Object,
+  data: VNodeData,
+  context: Component,
+  children: ?Array<VNode>
+): VNode | void {
+  const props = {}
+  const propOptions = Ctor.options.props
+  if (isDef(propOptions)) {
+    for (const key in propOptions) {
+      props[key] = validateProp(key, propOptions, propsData || {})
+    }
+  } else {
+    if (isDef(data.attrs)) mergeProps(props, data.attrs)
+    if (isDef(data.props)) mergeProps(props, data.props)
+  }
+  // ensure the createElement function in functional components
+  // gets a unique context - this is necessary for correct named slot check
+  const _context = Object.create(context)
+  const h = (a, b, c, d) => createElement(_context, a, b, c, d, true)
+  const vnode = Ctor.options.render.call(null, h, {
+    data,
+    props,
+    children,
+    parent: context,
+    listeners: data.on || {},
+    injections: resolveInject(Ctor.options.inject, context),
+    slots: () => resolveSlots(children, context)
+  })
+  if (vnode instanceof VNode) {
+    vnode.functionalContext = context
+    vnode.functionalOptions = Ctor.options
+    if (data.slot) {
+      (vnode.data || (vnode.data = {})).slot = data.slot
+    }
+  }
+  return vnode
+}
+
+function mergeProps (to, from) {
+  for (const key in from) {
+    to[camelize(key)] = from[key]
+  }
+}

node_modules/vue/src/core/vdom/helpers/extract-props.js

@@ -0,0 +1,75 @@
+/* @flow */
+
+import {
+  tip,
+  hasOwn,
+  isDef,
+  isUndef,
+  hyphenate,
+  formatComponentName
+} from 'core/util/index'
+
+export function extractPropsFromVNodeData (
+  data: VNodeData,
+  Ctor: Class<Component>,
+  tag?: string
+): ?Object {
+  // we are only extracting raw values here.
+  // validation and default values are handled in the child
+  // component itself.
+  const propOptions = Ctor.options.props
+  if (isUndef(propOptions)) {
+    return
+  }
+  const res = {}
+  const { attrs, props } = data
+  if (isDef(attrs) || isDef(props)) {
+    for (const key in propOptions) {
+      const altKey = hyphenate(key)
+      if (process.env.NODE_ENV !== 'production') {
+        const keyInLowerCase = key.toLowerCase()
+        if (
+          key !== keyInLowerCase &&
+          attrs && hasOwn(attrs, keyInLowerCase)
+        ) {
+          tip(
+            `Prop "${keyInLowerCase}" is passed to component ` +
+            `${formatComponentName(tag || Ctor)}, but the declared prop name is` +
+            ` "${key}". ` +
+            `Note that HTML attributes are case-insensitive and camelCased ` +
+            `props need to use their kebab-case equivalents when using in-DOM ` +
+            `templates. You should probably use "${altKey}" instead of "${key}".`
+          )
+        }
+      }
+      checkProp(res, props, key, altKey, true) ||
+      checkProp(res, attrs, key, altKey, false)
+    }
+  }
+  return res
+}
+
+function checkProp (
+  res: Object,
+  hash: ?Object,
+  key: string,
+  altKey: string,
+  preserve: boolean
+): boolean {
+  if (isDef(hash)) {
+    if (hasOwn(hash, key)) {
+      res[key] = hash[key]
+      if (!preserve) {
+        delete hash[key]
+      }
+      return true
+    } else if (hasOwn(hash, altKey)) {
+      res[key] = hash[altKey]
+      if (!preserve) {
+        delete hash[altKey]
+      }
+      return true
+    }
+  }
+  return false
+}

node_modules/vue/src/core/vdom/helpers/get-first-component-child.js

@@ -0,0 +1,14 @@
+/* @flow */
+
+import { isDef } from 'shared/util'
+
+export function getFirstComponentChild (children: ?Array<VNode>): ?VNode {
+  if (Array.isArray(children)) {
+    for (let i = 0; i < children.length; i++) {
+      const c = children[i]
+      if (isDef(c) && isDef(c.componentOptions)) {
+        return c
+      }
+    }
+  }
+}

node_modules/vue/src/core/vdom/helpers/index.js

@@ -0,0 +1,8 @@
+/* @flow */
+
+export * from './merge-hook'
+export * from './extract-props'
+export * from './update-listeners'
+export * from './normalize-children'
+export * from './resolve-async-component'
+export * from './get-first-component-child'

node_modules/vue/src/core/vdom/helpers/merge-hook.js

@@ -0,0 +1,34 @@
+/* @flow */
+
+import { createFnInvoker } from './update-listeners'
+import { remove, isDef, isUndef, isTrue } from 'shared/util'
+
+export function mergeVNodeHook (def: Object, hookKey: string, hook: Function) {
+  let invoker
+  const oldHook = def[hookKey]
+
+  function wrappedHook () {
+    hook.apply(this, arguments)
+    // important: remove merged hook to ensure it's called only once
+    // and prevent memory leak
+    remove(invoker.fns, wrappedHook)
+  }
+
+  if (isUndef(oldHook)) {
+    // no existing hook
+    invoker = createFnInvoker([wrappedHook])
+  } else {
+    /* istanbul ignore if */
+    if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
+      // already a merged invoker
+      invoker = oldHook
+      invoker.fns.push(wrappedHook)
+    } else {
+      // existing plain hook
+      invoker = createFnInvoker([oldHook, wrappedHook])
+    }
+  }
+
+  invoker.merged = true
+  def[hookKey] = invoker
+}

node_modules/vue/src/core/vdom/helpers/normalize-children.js

@@ -0,0 +1,80 @@
+/* @flow */
+
+import VNode, { createTextVNode } from 'core/vdom/vnode'
+import { isFalse, isTrue, isDef, isUndef, isPrimitive } from 'shared/util'
+
+// The template compiler attempts to minimize the need for normalization by
+// statically analyzing the template at compile time.
+//
+// For plain HTML markup, normalization can be completely skipped because the
+// generated render function is guaranteed to return Array<VNode>. There are
+// two cases where extra normalization is needed:
+
+// 1. When the children contains components - because a functional component
+// may return an Array instead of a single root. In this case, just a simple
+// normalization is needed - if any child is an Array, we flatten the whole
+// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
+// because functional components already normalize their own children.
+export function simpleNormalizeChildren (children: any) {
+  for (let i = 0; i < children.length; i++) {
+    if (Array.isArray(children[i])) {
+      return Array.prototype.concat.apply([], children)
+    }
+  }
+  return children
+}
+
+// 2. When the children contains constructs that always generated nested Arrays,
+// e.g. <template>, <slot>, v-for, or when the children is provided by user
+// with hand-written render functions / JSX. In such cases a full normalization
+// is needed to cater to all possible types of children values.
+export function normalizeChildren (children: any): ?Array<VNode> {
+  return isPrimitive(children)
+    ? [createTextVNode(children)]
+    : Array.isArray(children)
+      ? normalizeArrayChildren(children)
+      : undefined
+}
+
+function isTextNode (node): boolean {
+  return isDef(node) && isDef(node.text) && isFalse(node.isComment)
+}
+
+function normalizeArrayChildren (children: any, nestedIndex?: string): Array<VNode> {
+  const res = []
+  let i, c, last
+  for (i = 0; i < children.length; i++) {
+    c = children[i]
+    if (isUndef(c) || typeof c === 'boolean') continue
+    last = res[res.length - 1]
+    //  nested
+    if (Array.isArray(c)) {
+      res.push.apply(res, normalizeArrayChildren(c, `${nestedIndex || ''}_${i}`))
+    } else if (isPrimitive(c)) {
+      if (isTextNode(last)) {
+        // merge adjacent text nodes
+        // this is necessary for SSR hydration because text nodes are
+        // essentially merged when rendered to HTML strings
+        (last: any).text += String(c)
+      } else if (c !== '') {
+        // convert primitive to vnode
+        res.push(createTextVNode(c))
+      }
+    } else {
+      if (isTextNode(c) && isTextNode(last)) {
+        // merge adjacent text nodes
+        res[res.length - 1] = createTextVNode(last.text + c.text)
+      } else {
+        // default key for nested array children (likely generated by v-for)
+        if (isTrue(children._isVList) &&
+          isDef(c.tag) &&
+          isUndef(c.key) &&
+          isDef(nestedIndex)) {
+          c.key = `__vlist${nestedIndex}_${i}__`
+        }
+        res.push(c)
+      }
+    }
+  }
+  return res
+}

node_modules/vue/src/core/vdom/helpers/resolve-async-component.js

@@ -0,0 +1,118 @@
+/* @flow */
+
+import {
+  warn,
+  once,
+  isDef,
+  isUndef,
+  isTrue,
+  isObject
+} from 'core/util/index'
+
+function ensureCtor (comp, base) {
+  return isObject(comp)
+    ? base.extend(comp)
+    : comp
+}
+
+export function resolveAsyncComponent (
+  factory: Function,
+  baseCtor: Class<Component>,
+  context: Component
+): Class<Component> | void {
+  if (isTrue(factory.error) && isDef(factory.errorComp)) {
+    return factory.errorComp
+  }
+
+  if (isDef(factory.resolved)) {
+    return factory.resolved
+  }
+
+  if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
+    return factory.loadingComp
+  }
+
+  if (isDef(factory.contexts)) {
+    // already pending
+    factory.contexts.push(context)
+  } else {
+    const contexts = factory.contexts = [context]
+    let sync = true
+
+    const forceRender = () => {
+      for (let i = 0, l = contexts.length; i < l; i++) {
+        contexts[i].$forceUpdate()
+      }
+    }
+
+    const resolve = once((res: Object | Class<Component>) => {
+      // cache resolved
+      factory.resolved = ensureCtor(res, baseCtor)
+      // invoke callbacks only if this is not a synchronous resolve
+      // (async resolves are shimmed as synchronous during SSR)
+      if (!sync) {
+        forceRender()
+      }
+    })
+
+    const reject = once(reason => {
+      process.env.NODE_ENV !== 'production' && warn(
+        `Failed to resolve async component: ${String(factory)}` +
+        (reason ? `\nReason: ${reason}` : '')
+      )
+      if (isDef(factory.errorComp)) {
+        factory.error = true
+        forceRender()
+      }
+    })
+
+    const res = factory(resolve, reject)
+
+    if (isObject(res)) {
+      if (typeof res.then === 'function') {
+        // () => Promise
+        if (isUndef(factory.resolved)) {
+          res.then(resolve, reject)
+        }
+      } else if (isDef(res.component) && typeof res.component.then === 'function') {
+        res.component.then(resolve, reject)
+
+        if (isDef(res.error)) {
+          factory.errorComp = ensureCtor(res.error, baseCtor)
+        }
+
+        if (isDef(res.loading)) {
+          factory.loadingComp = ensureCtor(res.loading, baseCtor)
+          if (res.delay === 0) {
+            factory.loading = true
+          } else {
+            setTimeout(() => {
+              if (isUndef(factory.resolved) && isUndef(factory.error)) {
+                factory.loading = true
+                forceRender()
+              }
+            }, res.delay || 200)
+          }
+        }
+
+        if (isDef(res.timeout)) {
+          setTimeout(() => {
+            if (isUndef(factory.resolved)) {
+              reject(
+                process.env.NODE_ENV !== 'production'
+                  ? `timeout (${res.timeout}ms)`
+                  : null
+              )
+            }
+          }, res.timeout)
+        }
+      }
+    }
+
+    sync = false
+    // return in case resolved synchronously
+    return factory.loading
+      ? factory.loadingComp
+      : factory.resolved
+  }
+}

node_modules/vue/src/core/vdom/helpers/update-listeners.js

@@ -0,0 +1,75 @@
+/* @flow */
+
+import { warn } from 'core/util/index'
+import { cached, isUndef } from 'shared/util'
+
+const normalizeEvent = cached((name: string): {
+  name: string,
+  once: boolean,
+  capture: boolean,
+  passive: boolean
+} => {
+  const passive = name.charAt(0) === '&'
+  name = passive ? name.slice(1) : name
+  const once = name.charAt(0) === '~' // Prefixed last, checked first
+  name = once ? name.slice(1) : name
+  const capture = name.charAt(0) === '!'
+  name = capture ? name.slice(1) : name
+  return {
+    name,
+    once,
+    capture,
+    passive
+  }
+})
+
+export function createFnInvoker (fns: Function | Array<Function>): Function {
+  function invoker () {
+    const fns = invoker.fns
+    if (Array.isArray(fns)) {
+      for (let i = 0; i < fns.length; i++) {
+        fns[i].apply(null, arguments)
+      }
+    } else {
+      // return handler return value for single handlers
+      return fns.apply(null, arguments)
+    }
+  }
+  invoker.fns = fns
+  return invoker
+}
+
+export function updateListeners (
+  on: Object,
+  oldOn: Object,
+  add: Function,
+  remove: Function,
+  vm: Component
+) {
+  let name, cur, old, event
+  for (name in on) {
+    cur = on[name]
+    old = oldOn[name]
+    event = normalizeEvent(name)
+    if (isUndef(cur)) {
+      process.env.NODE_ENV !== 'production' && warn(
+        `Invalid handler for event "${event.name}": got ` + String(cur),
+        vm
+      )
+    } else if (isUndef(old)) {
+      if (isUndef(cur.fns)) {
+        cur = on[name] = createFnInvoker(cur)
+      }
+      add(event.name, cur, event.once, event.capture, event.passive)
+    } else if (cur !== old) {
+      old.fns = cur
+      on[name] = old
+    }
+  }
+  for (name in oldOn) {
+    if (isUndef(on[name])) {
+      event = normalizeEvent(name)
+      remove(event.name, oldOn[name], event.capture)
+    }
+  }
+}

node_modules/vue/src/core/vdom/modules/directives.js

@@ -0,0 +1,116 @@
+/* @flow */
+
+import { emptyNode } from 'core/vdom/patch'
+import { resolveAsset, handleError } from 'core/util/index'
+import { mergeVNodeHook } from 'core/vdom/helpers/index'
+
+export default {
+  create: updateDirectives,
+  update: updateDirectives,
+  destroy: function unbindDirectives (vnode: VNodeWithData) {
+    updateDirectives(vnode, emptyNode)
+  }
+}
+
+function updateDirectives (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  if (oldVnode.data.directives || vnode.data.directives) {
+    _update(oldVnode, vnode)
+  }
+}
+
+function _update (oldVnode, vnode) {
+  const isCreate = oldVnode === emptyNode
+  const isDestroy = vnode === emptyNode
+  const oldDirs = normalizeDirectives(oldVnode.data.directives, oldVnode.context)
+  const newDirs = normalizeDirectives(vnode.data.directives, vnode.context)
+
+  const dirsWithInsert = []
+  const dirsWithPostpatch = []
+
+  let key, oldDir, dir
+  for (key in newDirs) {
+    oldDir = oldDirs[key]
+    dir = newDirs[key]
+    if (!oldDir) {
+      // new directive, bind
+      callHook(dir, 'bind', vnode, oldVnode)
+      if (dir.def && dir.def.inserted) {
+        dirsWithInsert.push(dir)
+      }
+    } else {
+      // existing directive, update
+      dir.oldValue = oldDir.value
+      callHook(dir, 'update', vnode, oldVnode)
+      if (dir.def && dir.def.componentUpdated) {
+        dirsWithPostpatch.push(dir)
+      }
+    }
+  }
+
+  if (dirsWithInsert.length) {
+    const callInsert = () => {
+      for (let i = 0; i < dirsWithInsert.length; i++) {
+        callHook(dirsWithInsert[i], 'inserted', vnode, oldVnode)
+      }
+    }
+    if (isCreate) {
+      mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', callInsert)
+    } else {
+      callInsert()
+    }
+  }
+
+  if (dirsWithPostpatch.length) {
+    mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'postpatch', () => {
+      for (let i = 0; i < dirsWithPostpatch.length; i++) {
+        callHook(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode)
+      }
+    })
+  }
+
+  if (!isCreate) {
+    for (key in oldDirs) {
+      if (!newDirs[key]) {
+        // no longer present, unbind
+        callHook(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy)
+      }
+    }
+  }
+}
+
+const emptyModifiers = Object.create(null)
+
+function normalizeDirectives (
+  dirs: ?Array<VNodeDirective>,
+  vm: Component
+): { [key: string]: VNodeDirective } {
+  const res = Object.create(null)
+  if (!dirs) {
+    return res
+  }
+  let i, dir
+  for (i = 0; i < dirs.length; i++) {
+    dir = dirs[i]
+    if (!dir.modifiers) {
+      dir.modifiers = emptyModifiers
+    }
+    res[getRawDirName(dir)] = dir
+    dir.def = resolveAsset(vm.$options, 'directives', dir.name, true)
+  }
+  return res
+}
+
+function getRawDirName (dir: VNodeDirective): string {
+  return dir.rawName || `${dir.name}.${Object.keys(dir.modifiers || {}).join('.')}`
+}
+
+function callHook (dir, hook, vnode, oldVnode, isDestroy) {
+  const fn = dir.def && dir.def[hook]
+  if (fn) {
+    try {
+      fn(vnode.elm, dir, vnode, oldVnode, isDestroy)
+    } catch (e) {
+      handleError(e, vnode.context, `directive ${dir.name} ${hook} hook`)
+    }
+  }
+}

node_modules/vue/src/core/vdom/modules/index.js

@@ -0,0 +1,7 @@
+import directives from './directives'
+import ref from './ref'
+
+export default [
+  ref,
+  directives
+]

node_modules/vue/src/core/vdom/modules/ref.js

@@ -0,0 +1,44 @@
+/* @flow */
+
+import { remove } from 'shared/util'
+
+export default {
+  create (_: any, vnode: VNodeWithData) {
+    registerRef(vnode)
+  },
+  update (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+    if (oldVnode.data.ref !== vnode.data.ref) {
+      registerRef(oldVnode, true)
+      registerRef(vnode)
+    }
+  },
+  destroy (vnode: VNodeWithData) {
+    registerRef(vnode, true)
+  }
+}
+
+export function registerRef (vnode: VNodeWithData, isRemoval: ?boolean) {
+  const key = vnode.data.ref
+  if (!key) return
+
+  const vm = vnode.context
+  const ref = vnode.componentInstance || vnode.elm
+  const refs = vm.$refs
+  if (isRemoval) {
+    if (Array.isArray(refs[key])) {
+      remove(refs[key], ref)
+    } else if (refs[key] === ref) {
+      refs[key] = undefined
+    }
+  } else {
+    if (vnode.data.refInFor) {
+      if (Array.isArray(refs[key]) && refs[key].indexOf(ref) < 0) {
+        refs[key].push(ref)
+      } else {
+        refs[key] = [ref]
+      }
+    } else {
+      refs[key] = ref
+    }
+  }
+}

node_modules/vue/src/core/vdom/patch.js

@@ -0,0 +1,655 @@
+/**
+ * Virtual DOM patching algorithm based on Snabbdom by
+ * Simon Friis Vindum (@paldepind)
+ * Licensed under the MIT License
+ * https://github.com/paldepind/snabbdom/blob/master/LICENSE
+ *
+ * modified by Evan You (@yyx990803)
+ *
+
+/*
+ * Not type-checking this because this file is perf-critical and the cost
+ * of making flow understand it is not worth it.
+ */
+
+import VNode from './vnode'
+import config from '../config'
+import { SSR_ATTR } from 'shared/constants'
+import { registerRef } from './modules/ref'
+import { activeInstance } from '../instance/lifecycle'
+
+import {
+  warn,
+  isDef,
+  isUndef,
+  isTrue,
+  makeMap,
+  isPrimitive
+} from '../util/index'
+
+export const emptyNode = new VNode('', {}, [])
+
+const hooks = ['create', 'activate', 'update', 'remove', 'destroy']
+
+function sameVnode (a, b) {
+  return (
+    a.key === b.key &&
+    a.tag === b.tag &&
+    a.isComment === b.isComment &&
+    isDef(a.data) === isDef(b.data) &&
+    sameInputType(a, b)
+  )
+}
+
+// Some browsers do not support dynamically changing type for <input>
+// so they need to be treated as different nodes
+function sameInputType (a, b) {
+  if (a.tag !== 'input') return true
+  let i
+  const typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type
+  const typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type
+  return typeA === typeB
+}
+
+function createKeyToOldIdx (children, beginIdx, endIdx) {
+  let i, key
+  const map = {}
+  for (i = beginIdx; i <= endIdx; ++i) {
+    key = children[i].key
+    if (isDef(key)) map[key] = i
+  }
+  return map
+}
+
+export function createPatchFunction (backend) {
+  let i, j
+  const cbs = {}
+
+  const { modules, nodeOps } = backend
+
+  for (i = 0; i < hooks.length; ++i) {
+    cbs[hooks[i]] = []
+    for (j = 0; j < modules.length; ++j) {
+      if (isDef(modules[j][hooks[i]])) {
+        cbs[hooks[i]].push(modules[j][hooks[i]])
+      }
+    }
+  }
+
+  function emptyNodeAt (elm) {
+    return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
+  }
+
+  function createRmCb (childElm, listeners) {
+    function remove () {
+      if (--remove.listeners === 0) {
+        removeNode(childElm)
+      }
+    }
+    remove.listeners = listeners
+    return remove
+  }
+
+  function removeNode (el) {
+    const parent = nodeOps.parentNode(el)
+    // element may have already been removed due to v-html / v-text
+    if (isDef(parent)) {
+      nodeOps.removeChild(parent, el)
+    }
+  }
+
+  let inPre = 0
+  function createElm (vnode, insertedVnodeQueue, parentElm, refElm, nested) {
+    vnode.isRootInsert = !nested // for transition enter check
+    if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
+      return
+    }
+
+    const data = vnode.data
+    const children = vnode.children
+    const tag = vnode.tag
+    if (isDef(tag)) {
+      if (process.env.NODE_ENV !== 'production') {
+        if (data && data.pre) {
+          inPre++
+        }
+        if (
+          !inPre &&
+          !vnode.ns &&
+          !(config.ignoredElements.length && config.ignoredElements.indexOf(tag) > -1) &&
+          config.isUnknownElement(tag)
+        ) {
+          warn(
+            'Unknown custom element: <' + tag + '> - did you ' +
+            'register the component correctly? For recursive components, ' +
+            'make sure to provide the "name" option.',
+            vnode.context
+          )
+        }
+      }
+      vnode.elm = vnode.ns
+        ? nodeOps.createElementNS(vnode.ns, tag)
+        : nodeOps.createElement(tag, vnode)
+      setScope(vnode)
+
+      /* istanbul ignore if */
+      if (__WEEX__) {
+        // in Weex, the default insertion order is parent-first.
+        // List items can be optimized to use children-first insertion
+        // with append="tree".
+        const appendAsTree = isDef(data) && isTrue(data.appendAsTree)
+        if (!appendAsTree) {
+          if (isDef(data)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue)
+          }
+          insert(parentElm, vnode.elm, refElm)
+        }
+        createChildren(vnode, children, insertedVnodeQueue)
+        if (appendAsTree) {
+          if (isDef(data)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue)
+          }
+          insert(parentElm, vnode.elm, refElm)
+        }
+      } else {
+        createChildren(vnode, children, insertedVnodeQueue)
+        if (isDef(data)) {
+          invokeCreateHooks(vnode, insertedVnodeQueue)
+        }
+        insert(parentElm, vnode.elm, refElm)
+      }
+
+      if (process.env.NODE_ENV !== 'production' && data && data.pre) {
+        inPre--
+      }
+    } else if (isTrue(vnode.isComment)) {
+      vnode.elm = nodeOps.createComment(vnode.text)
+      insert(parentElm, vnode.elm, refElm)
+    } else {
+      vnode.elm = nodeOps.createTextNode(vnode.text)
+      insert(parentElm, vnode.elm, refElm)
+    }
+  }
+
+  function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+    let i = vnode.data
+    if (isDef(i)) {
+      const isReactivated = isDef(vnode.componentInstance) && i.keepAlive
+      if (isDef(i = i.hook) && isDef(i = i.init)) {
+        i(vnode, false /* hydrating */, parentElm, refElm)
+      }
+      // after calling the init hook, if the vnode is a child component
+      // it should've created a child instance and mounted it. the child
+      // component also has set the placeholder vnode's elm.
+      // in that case we can just return the element and be done.
+      if (isDef(vnode.componentInstance)) {
+        initComponent(vnode, insertedVnodeQueue)
+        if (isTrue(isReactivated)) {
+          reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm)
+        }
+        return true
+      }
+    }
+  }
+
+  function initComponent (vnode, insertedVnodeQueue) {
+    if (isDef(vnode.data.pendingInsert)) {
+      insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert)
+      vnode.data.pendingInsert = null
+    }
+    vnode.elm = vnode.componentInstance.$el
+    if (isPatchable(vnode)) {
+      invokeCreateHooks(vnode, insertedVnodeQueue)
+      setScope(vnode)
+    } else {
+      // empty component root.
+      // skip all element-related modules except for ref (#3455)
+      registerRef(vnode)
+      // make sure to invoke the insert hook
+      insertedVnodeQueue.push(vnode)
+    }
+  }
+
+  function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+    let i
+    // hack for #4339: a reactivated component with inner transition
+    // does not trigger because the inner node's created hooks are not called
+    // again. It's not ideal to involve module-specific logic in here but
+    // there doesn't seem to be a better way to do it.
+    let innerNode = vnode
+    while (innerNode.componentInstance) {
+      innerNode = innerNode.componentInstance._vnode
+      if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
+        for (i = 0; i < cbs.activate.length; ++i) {
+          cbs.activate[i](emptyNode, innerNode)
+        }
+        insertedVnodeQueue.push(innerNode)
+        break
+      }
+    }
+    // unlike a newly created component,
+    // a reactivated keep-alive component doesn't insert itself
+    insert(parentElm, vnode.elm, refElm)
+  }
+
+  function insert (parent, elm, ref) {
+    if (isDef(parent)) {
+      if (isDef(ref)) {
+        if (ref.parentNode === parent) {
+          nodeOps.insertBefore(parent, elm, ref)
+        }
+      } else {
+        nodeOps.appendChild(parent, elm)
+      }
+    }
+  }
+
+  function createChildren (vnode, children, insertedVnodeQueue) {
+    if (Array.isArray(children)) {
+      for (let i = 0; i < children.length; ++i) {
+        createElm(children[i], insertedVnodeQueue, vnode.elm, null, true)
+      }
+    } else if (isPrimitive(vnode.text)) {
+      nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(vnode.text))
+    }
+  }
+
+  function isPatchable (vnode) {
+    while (vnode.componentInstance) {
+      vnode = vnode.componentInstance._vnode
+    }
+    return isDef(vnode.tag)
+  }
+
+  function invokeCreateHooks (vnode, insertedVnodeQueue) {
+    for (let i = 0; i < cbs.create.length; ++i) {
+      cbs.create[i](emptyNode, vnode)
+    }
+    i = vnode.data.hook // Reuse variable
+    if (isDef(i)) {
+      if (isDef(i.create)) i.create(emptyNode, vnode)
+      if (isDef(i.insert)) insertedVnodeQueue.push(vnode)
+    }
+  }
+
+  // set scope id attribute for scoped CSS.
+  // this is implemented as a special case to avoid the overhead
+  // of going through the normal attribute patching process.
+  function setScope (vnode) {
+    let i
+    let ancestor = vnode
+    while (ancestor) {
+      if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
+        nodeOps.setAttribute(vnode.elm, i, '')
+      }
+      ancestor = ancestor.parent
+    }
+    // for slot content they should also get the scopeId from the host instance.
+    if (isDef(i = activeInstance) &&
+      i !== vnode.context &&
+      isDef(i = i.$options._scopeId)
+    ) {
+      nodeOps.setAttribute(vnode.elm, i, '')
+    }
+  }
+
+  function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
+    for (; startIdx <= endIdx; ++startIdx) {
+      createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm)
+    }
+  }
+
+  function invokeDestroyHook (vnode) {
+    let i, j
+    const data = vnode.data
+    if (isDef(data)) {
+      if (isDef(i = data.hook) && isDef(i = i.destroy)) i(vnode)
+      for (i = 0; i < cbs.destroy.length; ++i) cbs.destroy[i](vnode)
+    }
+    if (isDef(i = vnode.children)) {
+      for (j = 0; j < vnode.children.length; ++j) {
+        invokeDestroyHook(vnode.children[j])
+      }
+    }
+  }
+
+  function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
+    for (; startIdx <= endIdx; ++startIdx) {
+      const ch = vnodes[startIdx]
+      if (isDef(ch)) {
+        if (isDef(ch.tag)) {
+          removeAndInvokeRemoveHook(ch)
+          invokeDestroyHook(ch)
+        } else { // Text node
+          removeNode(ch.elm)
+        }
+      }
+    }
+  }
+
+  function removeAndInvokeRemoveHook (vnode, rm) {
+    if (isDef(rm) || isDef(vnode.data)) {
+      let i
+      const listeners = cbs.remove.length + 1
+      if (isDef(rm)) {
+        // we have a recursively passed down rm callback
+        // increase the listeners count
+        rm.listeners += listeners
+      } else {
+        // directly removing
+        rm = createRmCb(vnode.elm, listeners)
+      }
+      // recursively invoke hooks on child component root node
+      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
+        removeAndInvokeRemoveHook(i, rm)
+      }
+      for (i = 0; i < cbs.remove.length; ++i) {
+        cbs.remove[i](vnode, rm)
+      }
+      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
+        i(vnode, rm)
+      } else {
+        rm()
+      }
+    } else {
+      removeNode(vnode.elm)
+    }
+  }
+
+  function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
+    let oldStartIdx = 0
+    let newStartIdx = 0
+    let oldEndIdx = oldCh.length - 1
+    let oldStartVnode = oldCh[0]
+    let oldEndVnode = oldCh[oldEndIdx]
+    let newEndIdx = newCh.length - 1
+    let newStartVnode = newCh[0]
+    let newEndVnode = newCh[newEndIdx]
+    let oldKeyToIdx, idxInOld, elmToMove, refElm
+
+    // removeOnly is a special flag used only by <transition-group>
+    // to ensure removed elements stay in correct relative positions
+    // during leaving transitions
+    const canMove = !removeOnly
+
+    while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
+      if (isUndef(oldStartVnode)) {
+        oldStartVnode = oldCh[++oldStartIdx] // Vnode has been moved left
+      } else if (isUndef(oldEndVnode)) {
+        oldEndVnode = oldCh[--oldEndIdx]
+      } else if (sameVnode(oldStartVnode, newStartVnode)) {
+        patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue)
+        oldStartVnode = oldCh[++oldStartIdx]
+        newStartVnode = newCh[++newStartIdx]
+      } else if (sameVnode(oldEndVnode, newEndVnode)) {
+        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue)
+        oldEndVnode = oldCh[--oldEndIdx]
+        newEndVnode = newCh[--newEndIdx]
+      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
+        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue)
+        canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm))
+        oldStartVnode = oldCh[++oldStartIdx]
+        newEndVnode = newCh[--newEndIdx]
+      } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
+        patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue)
+        canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm)
+        oldEndVnode = oldCh[--oldEndIdx]
+        newStartVnode = newCh[++newStartIdx]
+      } else {
+        if (isUndef(oldKeyToIdx)) oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx)
+        idxInOld = isDef(newStartVnode.key) ? oldKeyToIdx[newStartVnode.key] : null
+        if (isUndef(idxInOld)) { // New element
+          createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm)
+          newStartVnode = newCh[++newStartIdx]
+        } else {
+          elmToMove = oldCh[idxInOld]
+          /* istanbul ignore if */
+          if (process.env.NODE_ENV !== 'production' && !elmToMove) {
+            warn(
+              'It seems there are duplicate keys that is causing an update error. ' +
+              'Make sure each v-for item has a unique key.'
+            )
+          }
+          if (sameVnode(elmToMove, newStartVnode)) {
+            patchVnode(elmToMove, newStartVnode, insertedVnodeQueue)
+            oldCh[idxInOld] = undefined
+            canMove && nodeOps.insertBefore(parentElm, newStartVnode.elm, oldStartVnode.elm)
+            newStartVnode = newCh[++newStartIdx]
+          } else {
+            // same key but different element. treat as new element
+            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm)
+            newStartVnode = newCh[++newStartIdx]
+          }
+        }
+      }
+    }
+    if (oldStartIdx > oldEndIdx) {
+      refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm
+      addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue)
+    } else if (newStartIdx > newEndIdx) {
+      removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx)
+    }
+  }
+
+  function patchVnode (oldVnode, vnode, insertedVnodeQueue, removeOnly) {
+    if (oldVnode === vnode) {
+      return
+    }
+    // reuse element for static trees.
+    // note we only do this if the vnode is cloned -
+    // if the new node is not cloned it means the render functions have been
+    // reset by the hot-reload-api and we need to do a proper re-render.
+    if (isTrue(vnode.isStatic) &&
+      isTrue(oldVnode.isStatic) &&
+      vnode.key === oldVnode.key &&
+      (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
+    ) {
+      vnode.elm = oldVnode.elm
+      vnode.componentInstance = oldVnode.componentInstance
+      return
+    }
+    let i
+    const data = vnode.data
+    if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
+      i(oldVnode, vnode)
+    }
+    const elm = vnode.elm = oldVnode.elm
+    const oldCh = oldVnode.children
+    const ch = vnode.children
+    if (isDef(data) && isPatchable(vnode)) {
+      for (i = 0; i < cbs.update.length; ++i) cbs.update[i](oldVnode, vnode)
+      if (isDef(i = data.hook) && isDef(i = i.update)) i(oldVnode, vnode)
+    }
+    if (isUndef(vnode.text)) {
+      if (isDef(oldCh) && isDef(ch)) {
+        if (oldCh !== ch) updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly)
+      } else if (isDef(ch)) {
+        if (isDef(oldVnode.text)) nodeOps.setTextContent(elm, '')
+        addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue)
+      } else if (isDef(oldCh)) {
+        removeVnodes(elm, oldCh, 0, oldCh.length - 1)
+      } else if (isDef(oldVnode.text)) {
+        nodeOps.setTextContent(elm, '')
+      }
+    } else if (oldVnode.text !== vnode.text) {
+      nodeOps.setTextContent(elm, vnode.text)
+    }
+    if (isDef(data)) {
+      if (isDef(i = data.hook) && isDef(i = i.postpatch)) i(oldVnode, vnode)
+    }
+  }
+
+  function invokeInsertHook (vnode, queue, initial) {
+    // delay insert hooks for component root nodes, invoke them after the
+    // element is really inserted
+    if (isTrue(initial) && isDef(vnode.parent)) {
+      vnode.parent.data.pendingInsert = queue
+    } else {
+      for (let i = 0; i < queue.length; ++i) {
+        queue[i].data.hook.insert(queue[i])
+      }
+    }
+  }
+
+  let bailed = false
+  // list of modules that can skip create hook during hydration because they
+  // are already rendered on the client or has no need for initialization
+  const isRenderedModule = makeMap('attrs,style,class,staticClass,staticStyle,key')
+
+  // Note: this is a browser-only function so we can assume elms are DOM nodes.
+  function hydrate (elm, vnode, insertedVnodeQueue) {
+    if (process.env.NODE_ENV !== 'production') {
+      if (!assertNodeMatch(elm, vnode)) {
+        return false
+      }
+    }
+    vnode.elm = elm
+    const { tag, data, children } = vnode
+    if (isDef(data)) {
+      if (isDef(i = data.hook) && isDef(i = i.init)) i(vnode, true /* hydrating */)
+      if (isDef(i = vnode.componentInstance)) {
+        // child component. it should have hydrated its own tree.
+        initComponent(vnode, insertedVnodeQueue)
+        return true
+      }
+    }
+    if (isDef(tag)) {
+      if (isDef(children)) {
+        // empty element, allow client to pick up and populate children
+        if (!elm.hasChildNodes()) {
+          createChildren(vnode, children, insertedVnodeQueue)
+        } else {
+          let childrenMatch = true
+          let childNode = elm.firstChild
+          for (let i = 0; i < children.length; i++) {
+            if (!childNode || !hydrate(childNode, children[i], insertedVnodeQueue)) {
+              childrenMatch = false
+              break
+            }
+            childNode = childNode.nextSibling
+          }
+          // if childNode is not null, it means the actual childNodes list is
+          // longer than the virtual children list.
+          if (!childrenMatch || childNode) {
+            if (process.env.NODE_ENV !== 'production' &&
+              typeof console !== 'undefined' &&
+              !bailed
+            ) {
+              bailed = true
+              console.warn('Parent: ', elm)
+              console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children)
+            }
+            return false
+          }
+        }
+      }
+      if (isDef(data)) {
+        for (const key in data) {
+          if (!isRenderedModule(key)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue)
+            break
+          }
+        }
+      }
+    } else if (elm.data !== vnode.text) {
+      elm.data = vnode.text
+    }
+    return true
+  }
+
+  function assertNodeMatch (node, vnode) {
+    if (isDef(vnode.tag)) {
+      return (
+        vnode.tag.indexOf('vue-component') === 0 ||
+        vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
+      )
+    } else {
+      return node.nodeType === (vnode.isComment ? 8 : 3)
+    }
+  }
+
+  return function patch (oldVnode, vnode, hydrating, removeOnly, parentElm, refElm) {
+    if (isUndef(vnode)) {
+      if (isDef(oldVnode)) invokeDestroyHook(oldVnode)
+      return
+    }
+
+    let isInitialPatch = false
+    const insertedVnodeQueue = []
+
+    if (isUndef(oldVnode)) {
+      // empty mount (likely as component), create new root element
+      isInitialPatch = true
+      createElm(vnode, insertedVnodeQueue, parentElm, refElm)
+    } else {
+      const isRealElement = isDef(oldVnode.nodeType)
+      if (!isRealElement && sameVnode(oldVnode, vnode)) {
+        // patch existing root node
+        patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly)
+      } else {
+        if (isRealElement) {
+          // mounting to a real element
+          // check if this is server-rendered content and if we can perform
+          // a successful hydration.
+          if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
+            oldVnode.removeAttribute(SSR_ATTR)
+            hydrating = true
+          }
+          if (isTrue(hydrating)) {
+            if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
+              invokeInsertHook(vnode, insertedVnodeQueue, true)
+              return oldVnode
+            } else if (process.env.NODE_ENV !== 'production') {
+              warn(
+                'The client-side rendered virtual DOM tree is not matching ' +
+                'server-rendered content. This is likely caused by incorrect ' +
+                'HTML markup, for example nesting block-level elements inside ' +
+                '<p>, or missing <tbody>. Bailing hydration and performing ' +
+                'full client-side render.'
+              )
+            }
+          }
+          // either not server-rendered, or hydration failed.
+          // create an empty node and replace it
+          oldVnode = emptyNodeAt(oldVnode)
+        }
+        // replacing existing element
+        const oldElm = oldVnode.elm
+        const parentElm = nodeOps.parentNode(oldElm)
+        createElm(
+          vnode,
+          insertedVnodeQueue,
+          // extremely rare edge case: do not insert if old element is in a
+          // leaving transition. Only happens when combining transition +
+          // keep-alive + HOCs. (#4590)
+          oldElm._leaveCb ? null : parentElm,
+          nodeOps.nextSibling(oldElm)
+        )
+
+        if (isDef(vnode.parent)) {
+          // component root element replaced.
+          // update parent placeholder node element, recursively
+          let ancestor = vnode.parent
+          while (ancestor) {
+            ancestor.elm = vnode.elm
+            ancestor = ancestor.parent
+          }
+          if (isPatchable(vnode)) {
+            for (let i = 0; i < cbs.create.length; ++i) {
+              cbs.create[i](emptyNode, vnode.parent)
+            }
+          }
+        }
+
+        if (isDef(parentElm)) {
+          removeVnodes(parentElm, [oldVnode], 0, 0)
+        } else if (isDef(oldVnode.tag)) {
+          invokeDestroyHook(oldVnode)
+        }
+      }
+    }
+
+    invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch)
+    return vnode.elm
+  }
+}

node_modules/vue/src/core/vdom/vnode.js

@@ -0,0 +1,99 @@
+/* @flow */
+
+export default class VNode {
+  tag: string | void;
+  data: VNodeData | void;
+  children: ?Array<VNode>;
+  text: string | void;
+  elm: Node | void;
+  ns: string | void;
+  context: Component | void; // rendered in this component's scope
+  functionalContext: Component | void; // only for functional component root nodes
+  key: string | number | void;
+  componentOptions: VNodeComponentOptions | void;
+  componentInstance: Component | void; // component instance
+  parent: VNode | void; // component placeholder node
+  raw: boolean; // contains raw HTML? (server only)
+  isStatic: boolean; // hoisted static node
+  isRootInsert: boolean; // necessary for enter transition check
+  isComment: boolean; // empty comment placeholder?
+  isCloned: boolean; // is a cloned node?
+  isOnce: boolean; // is a v-once node?
+
+  constructor (
+    tag?: string,
+    data?: VNodeData,
+    children?: ?Array<VNode>,
+    text?: string,
+    elm?: Node,
+    context?: Component,
+    componentOptions?: VNodeComponentOptions
+  ) {
+    this.tag = tag
+    this.data = data
+    this.children = children
+    this.text = text
+    this.elm = elm
+    this.ns = undefined
+    this.context = context
+    this.functionalContext = undefined
+    this.key = data && data.key
+    this.componentOptions = componentOptions
+    this.componentInstance = undefined
+    this.parent = undefined
+    this.raw = false
+    this.isStatic = false
+    this.isRootInsert = true
+    this.isComment = false
+    this.isCloned = false
+    this.isOnce = false
+  }
+
+  // DEPRECATED: alias for componentInstance for backwards compat.
+  /* istanbul ignore next */
+  get child (): Component | void {
+    return this.componentInstance
+  }
+}
+
+export const createEmptyVNode = () => {
+  const node = new VNode()
+  node.text = ''
+  node.isComment = true
+  return node
+}
+
+export function createTextVNode (val: string | number) {
+  return new VNode(undefined, undefined, undefined, String(val))
+}
+
+// optimized shallow clone
+// used for static nodes and slot nodes because they may be reused across
+// multiple renders, cloning them avoids errors when DOM manipulations rely
+// on their elm reference.
+export function cloneVNode (vnode: VNode): VNode {
+  const cloned = new VNode(
+    vnode.tag,
+    vnode.data,
+    vnode.children,
+    vnode.text,
+    vnode.elm,
+    vnode.context,
+    vnode.componentOptions
+  )
+  cloned.ns = vnode.ns
+  cloned.isStatic = vnode.isStatic
+  cloned.key = vnode.key
+  cloned.isComment = vnode.isComment
+  cloned.isCloned = true
+  return cloned
+}
+
+export function cloneVNodes (vnodes: Array<VNode>): Array<VNode> {
+  const len = vnodes.length
+  const res = new Array(len)
+  for (let i = 0; i < len; i++) {
+    res[i] = cloneVNode(vnodes[i])
+  }
+  return res
+}

node_modules/vue/src/platforms/web/compiler.js

@@ -0,0 +1,4 @@
+/* @flow */
+
+export { parseComponent } from 'sfc/parser'
+export { compile, compileToFunctions } from './compiler/index'

node_modules/vue/src/platforms/web/compiler/directives/html.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+import { addProp } from 'compiler/helpers'
+
+export default function html (el: ASTElement, dir: ASTDirective) {
+  if (dir.value) {
+    addProp(el, 'innerHTML', `_s(${dir.value})`)
+  }
+}

node_modules/vue/src/platforms/web/compiler/directives/index.js

@@ -0,0 +1,9 @@
+import model from './model'
+import text from './text'
+import html from './html'
+
+export default {
+  model,
+  text,
+  html
+}

node_modules/vue/src/platforms/web/compiler/directives/model.js

@@ -0,0 +1,160 @@
+/* @flow */
+
+import config from 'core/config'
+import { addHandler, addProp, getBindingAttr } from 'compiler/helpers'
+import { genComponentModel, genAssignmentCode } from 'compiler/directives/model'
+
+let warn
+
+// in some cases, the event used has to be determined at runtime
+// so we used some reserved tokens during compile.
+export const RANGE_TOKEN = '__r'
+export const CHECKBOX_RADIO_TOKEN = '__c'
+
+export default function model (
+  el: ASTElement,
+  dir: ASTDirective,
+  _warn: Function
+): ?boolean {
+  warn = _warn
+  const value = dir.value
+  const modifiers = dir.modifiers
+  const tag = el.tag
+  const type = el.attrsMap.type
+
+  if (process.env.NODE_ENV !== 'production') {
+    const dynamicType = el.attrsMap['v-bind:type'] || el.attrsMap[':type']
+    if (tag === 'input' && dynamicType) {
+      warn(
+        `<input :type="${dynamicType}" v-model="${value}">:\n` +
+        `v-model does not support dynamic input types. Use v-if branches instead.`
+      )
+    }
+    // inputs with type="file" are read only and setting the input's
+    // value will throw an error.
+    if (tag === 'input' && type === 'file') {
+      warn(
+        `<${el.tag} v-model="${value}" type="file">:\n` +
+        `File inputs are read only. Use a v-on:change listener instead.`
+      )
+    }
+  }
+
+  if (tag === 'select') {
+    genSelect(el, value, modifiers)
+  } else if (tag === 'input' && type === 'checkbox') {
+    genCheckboxModel(el, value, modifiers)
+  } else if (tag === 'input' && type === 'radio') {
+    genRadioModel(el, value, modifiers)
+  } else if (tag === 'input' || tag === 'textarea') {
+    genDefaultModel(el, value, modifiers)
+  } else if (!config.isReservedTag(tag)) {
+    genComponentModel(el, value, modifiers)
+    // component v-model doesn't need extra runtime
+    return false
+  } else if (process.env.NODE_ENV !== 'production') {
+    warn(
+      `<${el.tag} v-model="${value}">: ` +
+      `v-model is not supported on this element type. ` +
+      'If you are working with contenteditable, it\'s recommended to ' +
+      'wrap a library dedicated for that purpose inside a custom component.'
+    )
+  }
+
+  // ensure runtime directive metadata
+  return true
+}
+
+function genCheckboxModel (
+  el: ASTElement,
+  value: string,
+  modifiers: ?ASTModifiers
+) {
+  const number = modifiers && modifiers.number
+  const valueBinding = getBindingAttr(el, 'value') || 'null'
+  const trueValueBinding = getBindingAttr(el, 'true-value') || 'true'
+  const falseValueBinding = getBindingAttr(el, 'false-value') || 'false'
+  addProp(el, 'checked',
+    `Array.isArray(${value})` +
+      `?_i(${value},${valueBinding})>-1` + (
+        trueValueBinding === 'true'
+          ? `:(${value})`
+          : `:_q(${value},${trueValueBinding})`
+      )
+  )
+  addHandler(el, CHECKBOX_RADIO_TOKEN,
+    `var $$a=${value},` +
+        '$$el=$event.target,' +
+        `$$c=$$el.checked?(${trueValueBinding}):(${falseValueBinding});` +
+    'if(Array.isArray($$a)){' +
+      `var $$v=${number ? '_n(' + valueBinding + ')' : valueBinding},` +
+          '$$i=_i($$a,$$v);' +
+      `if($$c){$$i<0&&(${value}=$$a.concat($$v))}` +
+      `else{$$i>-1&&(${value}=$$a.slice(0,$$i).concat($$a.slice($$i+1)))}` +
+    `}else{${genAssignmentCode(value, '$$c')}}`,
+    null, true
+  )
+}
+
+function genRadioModel (
+    el: ASTElement,
+    value: string,
+    modifiers: ?ASTModifiers
+) {
+  const number = modifiers && modifiers.number
+  let valueBinding = getBindingAttr(el, 'value') || 'null'
+  valueBinding = number ? `_n(${valueBinding})` : valueBinding
+  addProp(el, 'checked', `_q(${value},${valueBinding})`)
+  addHandler(el, CHECKBOX_RADIO_TOKEN, genAssignmentCode(value, valueBinding), null, true)
+}
+
+function genSelect (
+    el: ASTElement,
+    value: string,
+    modifiers: ?ASTModifiers
+) {
+  const number = modifiers && modifiers.number
+  const selectedVal = `Array.prototype.filter` +
+    `.call($event.target.options,function(o){return o.selected})` +
+    `.map(function(o){var val = "_value" in o ? o._value : o.value;` +
+    `return ${number ? '_n(val)' : 'val'}})`
+
+  const assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]'
+  let code = `var $$selectedVal = ${selectedVal};`
+  code = `${code} ${genAssignmentCode(value, assignment)}`
+  addHandler(el, 'change', code, null, true)
+}
+
+function genDefaultModel (
+  el: ASTElement,
+  value: string,
+  modifiers: ?ASTModifiers
+): ?boolean {
+  const type = el.attrsMap.type
+  const { lazy, number, trim } = modifiers || {}
+  const needCompositionGuard = !lazy && type !== 'range'
+  const event = lazy
+    ? 'change'
+    : type === 'range'
+      ? RANGE_TOKEN
+      : 'input'
+
+  let valueExpression = '$event.target.value'
+  if (trim) {
+    valueExpression = `$event.target.value.trim()`
+  }
+  if (number) {
+    valueExpression = `_n(${valueExpression})`
+  }
+
+  let code = genAssignmentCode(value, valueExpression)
+  if (needCompositionGuard) {
+    code = `if($event.target.composing)return;${code}`
+  }
+
+  addProp(el, 'value', `(${value})`)
+  addHandler(el, event, code, null, true)
+  if (trim || number || type === 'number') {
+    addHandler(el, 'blur', '$forceUpdate()')
+  }
+}

node_modules/vue/src/platforms/web/compiler/directives/text.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+import { addProp } from 'compiler/helpers'
+
+export default function text (el: ASTElement, dir: ASTDirective) {
+  if (dir.value) {
+    addProp(el, 'textContent', `_s(${dir.value})`)
+  }
+}

node_modules/vue/src/platforms/web/compiler/index.js

@@ -0,0 +1,31 @@
+/* @flow */
+
+import { isUnaryTag, canBeLeftOpenTag } from './util'
+import { genStaticKeys } from 'shared/util'
+import { createCompiler } from 'compiler/index'
+
+import modules from './modules/index'
+import directives from './directives/index'
+
+import {
+  isPreTag,
+  mustUseProp,
+  isReservedTag,
+  getTagNamespace
+} from '../util/index'
+
+export const baseOptions: CompilerOptions = {
+  expectHTML: true,
+  modules,
+  directives,
+  isPreTag,
+  isUnaryTag,
+  mustUseProp,
+  canBeLeftOpenTag,
+  isReservedTag,
+  getTagNamespace,
+  staticKeys: genStaticKeys(modules)
+}
+
+const { compile, compileToFunctions } = createCompiler(baseOptions)
+export { compile, compileToFunctions }

node_modules/vue/src/platforms/web/compiler/modules/class.js

@@ -0,0 +1,48 @@
+/* @flow */
+
+import { parseText } from 'compiler/parser/text-parser'
+import {
+  getAndRemoveAttr,
+  getBindingAttr,
+  baseWarn
+} from 'compiler/helpers'
+
+function transformNode (el: ASTElement, options: CompilerOptions) {
+  const warn = options.warn || baseWarn
+  const staticClass = getAndRemoveAttr(el, 'class')
+  if (process.env.NODE_ENV !== 'production' && staticClass) {
+    const expression = parseText(staticClass, options.delimiters)
+    if (expression) {
+      warn(
+        `class="${staticClass}": ` +
+        'Interpolation inside attributes has been removed. ' +
+        'Use v-bind or the colon shorthand instead. For example, ' +
+        'instead of <div class="{{ val }}">, use <div :class="val">.'
+      )
+    }
+  }
+  if (staticClass) {
+    el.staticClass = JSON.stringify(staticClass)
+  }
+  const classBinding = getBindingAttr(el, 'class', false /* getStatic */)
+  if (classBinding) {
+    el.classBinding = classBinding
+  }
+}
+
+function genData (el: ASTElement): string {
+  let data = ''
+  if (el.staticClass) {
+    data += `staticClass:${el.staticClass},`
+  }
+  if (el.classBinding) {
+    data += `class:${el.classBinding},`
+  }
+  return data
+}
+
+export default {
+  staticKeys: ['staticClass'],
+  transformNode,
+  genData
+}

node_modules/vue/src/platforms/web/compiler/modules/index.js

@@ -0,0 +1,7 @@
+import klass from './class'
+import style from './style'
+
+export default [
+  klass,
+  style
+]

node_modules/vue/src/platforms/web/compiler/modules/style.js

@@ -0,0 +1,51 @@
+/* @flow */
+
+import { parseText } from 'compiler/parser/text-parser'
+import { parseStyleText } from 'web/util/style'
+import {
+  getAndRemoveAttr,
+  getBindingAttr,
+  baseWarn
+} from 'compiler/helpers'
+
+function transformNode (el: ASTElement, options: CompilerOptions) {
+  const warn = options.warn || baseWarn
+  const staticStyle = getAndRemoveAttr(el, 'style')
+  if (staticStyle) {
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production') {
+      const expression = parseText(staticStyle, options.delimiters)
+      if (expression) {
+        warn(
+          `style="${staticStyle}": ` +
+          'Interpolation inside attributes has been removed. ' +
+          'Use v-bind or the colon shorthand instead. For example, ' +
+          'instead of <div style="{{ val }}">, use <div :style="val">.'
+        )
+      }
+    }
+    el.staticStyle = JSON.stringify(parseStyleText(staticStyle))
+  }
+
+  const styleBinding = getBindingAttr(el, 'style', false /* getStatic */)
+  if (styleBinding) {
+    el.styleBinding = styleBinding
+  }
+}
+
+function genData (el: ASTElement): string {
+  let data = ''
+  if (el.staticStyle) {
+    data += `staticStyle:${el.staticStyle},`
+  }
+  if (el.styleBinding) {
+    data += `style:(${el.styleBinding}),`
+  }
+  return data
+}
+
+export default {
+  staticKeys: ['staticStyle'],
+  transformNode,
+  genData
+}

node_modules/vue/src/platforms/web/compiler/util.js

@@ -0,0 +1,24 @@
+/* @flow */
+
+import { makeMap } from 'shared/util'
+
+export const isUnaryTag = makeMap(
+  'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
+  'link,meta,param,source,track,wbr'
+)
+
+// Elements that you can, intentionally, leave open
+// (and which close themselves)
+export const canBeLeftOpenTag = makeMap(
+  'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
+)
+
+// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
+// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
+export const isNonPhrasingTag = makeMap(
+  'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
+  'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
+  'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
+  'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
+  'title,tr,track'
+)

node_modules/vue/src/platforms/web/runtime-with-compiler.js

@@ -0,0 +1,98 @@
+/* @flow */
+
+import config from 'core/config'
+import { warn, cached } from 'core/util/index'
+import { mark, measure } from 'core/util/perf'
+
+import Vue from './runtime/index'
+import { query } from './util/index'
+import { shouldDecodeNewlines } from './util/compat'
+import { compileToFunctions } from './compiler/index'
+
+const idToTemplate = cached(id => {
+  const el = query(id)
+  return el && el.innerHTML
+})
+
+const mount = Vue.prototype.$mount
+Vue.prototype.$mount = function (
+  el?: string | Element,
+  hydrating?: boolean
+): Component {
+  el = el && query(el)
+
+  /* istanbul ignore if */
+  if (el === document.body || el === document.documentElement) {
+    process.env.NODE_ENV !== 'production' && warn(
+      `Do not mount Vue to <html> or <body> - mount to normal elements instead.`
+    )
+    return this
+  }
+
+  const options = this.$options
+  // resolve template/el and convert to render function
+  if (!options.render) {
+    let template = options.template
+    if (template) {
+      if (typeof template === 'string') {
+        if (template.charAt(0) === '#') {
+          template = idToTemplate(template)
+          /* istanbul ignore if */
+          if (process.env.NODE_ENV !== 'production' && !template) {
+            warn(
+              `Template element not found or is empty: ${options.template}`,
+              this
+            )
+          }
+        }
+      } else if (template.nodeType) {
+        template = template.innerHTML
+      } else {
+        if (process.env.NODE_ENV !== 'production') {
+          warn('invalid template option:' + template, this)
+        }
+        return this
+      }
+    } else if (el) {
+      template = getOuterHTML(el)
+    }
+    if (template) {
+      /* istanbul ignore if */
+      if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+        mark('compile')
+      }
+
+      const { render, staticRenderFns } = compileToFunctions(template, {
+        shouldDecodeNewlines,
+        delimiters: options.delimiters
+      }, this)
+      options.render = render
+      options.staticRenderFns = staticRenderFns
+
+      /* istanbul ignore if */
+      if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+        mark('compile end')
+        measure(`${this._name} compile`, 'compile', 'compile end')
+      }
+    }
+  }
+  return mount.call(this, el, hydrating)
+}
+
+/**
+ * Get outerHTML of elements, taking care
+ * of SVG elements in IE as well.
+ */
+function getOuterHTML (el: Element): string {
+  if (el.outerHTML) {
+    return el.outerHTML
+  } else {
+    const container = document.createElement('div')
+    container.appendChild(el.cloneNode(true))
+    return container.innerHTML
+  }
+}
+
+Vue.compile = compileToFunctions
+
+export default Vue

node_modules/vue/src/platforms/web/runtime.js

@@ -0,0 +1,5 @@
+/* @flow */
+
+import Vue from './runtime/index'
+
+export default Vue

node_modules/vue/src/platforms/web/runtime/class-util.js

@@ -0,0 +1,53 @@
+/* @flow */
+
+/**
+ * Add class with compatibility for SVG since classList is not supported on
+ * SVG elements in IE
+ */
+export function addClass (el: HTMLElement, cls: ?string) {
+  /* istanbul ignore if */
+  if (!cls || !(cls = cls.trim())) {
+    return
+  }
+
+  /* istanbul ignore else */
+  if (el.classList) {
+    if (cls.indexOf(' ') > -1) {
+      cls.split(/\s+/).forEach(c => el.classList.add(c))
+    } else {
+      el.classList.add(cls)
+    }
+  } else {
+    const cur = ` ${el.getAttribute('class') || ''} `
+    if (cur.indexOf(' ' + cls + ' ') < 0) {
+      el.setAttribute('class', (cur + cls).trim())
+    }
+  }
+}
+
+/**
+ * Remove class with compatibility for SVG since classList is not supported on
+ * SVG elements in IE
+ */
+export function removeClass (el: HTMLElement, cls: ?string) {
+  /* istanbul ignore if */
+  if (!cls || !(cls = cls.trim())) {
+    return
+  }
+
+  /* istanbul ignore else */
+  if (el.classList) {
+    if (cls.indexOf(' ') > -1) {
+      cls.split(/\s+/).forEach(c => el.classList.remove(c))
+    } else {
+      el.classList.remove(cls)
+    }
+  } else {
+    let cur = ` ${el.getAttribute('class') || ''} `
+    const tar = ' ' + cls + ' '
+    while (cur.indexOf(tar) >= 0) {
+      cur = cur.replace(tar, ' ')
+    }
+    el.setAttribute('class', cur.trim())
+  }
+}

node_modules/vue/src/platforms/web/runtime/components/index.js

@@ -0,0 +1,7 @@
+import Transition from './transition'
+import TransitionGroup from './transition-group'
+
+export default {
+  Transition,
+  TransitionGroup
+}

node_modules/vue/src/platforms/web/runtime/components/transition-group.js

@@ -0,0 +1,178 @@
+/* @flow */
+
+// Provides transition support for list items.
+// supports move transitions using the FLIP technique.
+
+// Because the vdom's children update algorithm is "unstable" - i.e.
+// it doesn't guarantee the relative positioning of removed elements,
+// we force transition-group to update its children into two passes:
+// in the first pass, we remove all nodes that need to be removed,
+// triggering their leaving transition; in the second pass, we insert/move
+// into the final desired state. This way in the second pass removed
+// nodes will remain where they should be.
+
+import { warn, extend } from 'core/util/index'
+import { addClass, removeClass } from '../class-util'
+import { transitionProps, extractTransitionData } from './transition'
+
+import {
+  hasTransition,
+  getTransitionInfo,
+  transitionEndEvent,
+  addTransitionClass,
+  removeTransitionClass
+} from '../transition-util'
+
+const props = extend({
+  tag: String,
+  moveClass: String
+}, transitionProps)
+
+delete props.mode
+
+export default {
+  props,
+
+  render (h: Function) {
+    const tag: string = this.tag || this.$vnode.data.tag || 'span'
+    const map: Object = Object.create(null)
+    const prevChildren: Array<VNode> = this.prevChildren = this.children
+    const rawChildren: Array<VNode> = this.$slots.default || []
+    const children: Array<VNode> = this.children = []
+    const transitionData: Object = extractTransitionData(this)
+
+    for (let i = 0; i < rawChildren.length; i++) {
+      const c: VNode = rawChildren[i]
+      if (c.tag) {
+        if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
+          children.push(c)
+          map[c.key] = c
+          ;(c.data || (c.data = {})).transition = transitionData
+        } else if (process.env.NODE_ENV !== 'production') {
+          const opts: ?VNodeComponentOptions = c.componentOptions
+          const name: string = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag
+          warn(`<transition-group> children must be keyed: <${name}>`)
+        }
+      }
+    }
+
+    if (prevChildren) {
+      const kept: Array<VNode> = []
+      const removed: Array<VNode> = []
+      for (let i = 0; i < prevChildren.length; i++) {
+        const c: VNode = prevChildren[i]
+        c.data.transition = transitionData
+        c.data.pos = c.elm.getBoundingClientRect()
+        if (map[c.key]) {
+          kept.push(c)
+        } else {
+          removed.push(c)
+        }
+      }
+      this.kept = h(tag, null, kept)
+      this.removed = removed
+    }
+
+    return h(tag, null, children)
+  },
+
+  beforeUpdate () {
+    // force removing pass
+    this.__patch__(
+      this._vnode,
+      this.kept,
+      false, // hydrating
+      true // removeOnly (!important, avoids unnecessary moves)
+    )
+    this._vnode = this.kept
+  },
+
+  updated () {
+    const children: Array<VNode> = this.prevChildren
+    const moveClass: string = this.moveClass || ((this.name || 'v') + '-move')
+    if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
+      return
+    }
+
+    // we divide the work into three loops to avoid mixing DOM reads and writes
+    // in each iteration - which helps prevent layout thrashing.
+    children.forEach(callPendingCbs)
+    children.forEach(recordPosition)
+    children.forEach(applyTranslation)
+
+    // force reflow to put everything in position
+    const body: any = document.body
+    const f: number = body.offsetHeight // eslint-disable-line
+
+    children.forEach((c: VNode) => {
+      if (c.data.moved) {
+        var el: any = c.elm
+        var s: any = el.style
+        addTransitionClass(el, moveClass)
+        s.transform = s.WebkitTransform = s.transitionDuration = ''
+        el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
+          if (!e || /transform$/.test(e.propertyName)) {
+            el.removeEventListener(transitionEndEvent, cb)
+            el._moveCb = null
+            removeTransitionClass(el, moveClass)
+          }
+        })
+      }
+    })
+  },
+
+  methods: {
+    hasMove (el: any, moveClass: string): boolean {
+      /* istanbul ignore if */
+      if (!hasTransition) {
+        return false
+      }
+      if (this._hasMove != null) {
+        return this._hasMove
+      }
+      // Detect whether an element with the move class applied has
+      // CSS transitions. Since the element may be inside an entering
+      // transition at this very moment, we make a clone of it and remove
+      // all other transition classes applied to ensure only the move class
+      // is applied.
+      const clone: HTMLElement = el.cloneNode()
+      if (el._transitionClasses) {
+        el._transitionClasses.forEach((cls: string) => { removeClass(clone, cls) })
+      }
+      addClass(clone, moveClass)
+      clone.style.display = 'none'
+      this.$el.appendChild(clone)
+      const info: Object = getTransitionInfo(clone)
+      this.$el.removeChild(clone)
+      return (this._hasMove = info.hasTransform)
+    }
+  }
+}
+
+function callPendingCbs (c: VNode) {
+  /* istanbul ignore if */
+  if (c.elm._moveCb) {
+    c.elm._moveCb()
+  }
+  /* istanbul ignore if */
+  if (c.elm._enterCb) {
+    c.elm._enterCb()
+  }
+}
+
+function recordPosition (c: VNode) {
+  c.data.newPos = c.elm.getBoundingClientRect()
+}
+
+function applyTranslation (c: VNode) {
+  const oldPos = c.data.pos
+  const newPos = c.data.newPos
+  const dx = oldPos.left - newPos.left
+  const dy = oldPos.top - newPos.top
+  if (dx || dy) {
+    c.data.moved = true
+    const s = c.elm.style
+    s.transform = s.WebkitTransform = `translate(${dx}px,${dy}px)`
+    s.transitionDuration = '0s'
+  }
+}

node_modules/vue/src/platforms/web/runtime/components/transition.js

@@ -0,0 +1,178 @@
+/* @flow */
+
+// Provides transition support for a single element/component.
+// supports transition mode (out-in / in-out)
+
+import { warn } from 'core/util/index'
+import { camelize, extend, isPrimitive } from 'shared/util'
+import { mergeVNodeHook, getFirstComponentChild } from 'core/vdom/helpers/index'
+
+export const transitionProps = {
+  name: String,
+  appear: Boolean,
+  css: Boolean,
+  mode: String,
+  type: String,
+  enterClass: String,
+  leaveClass: String,
+  enterToClass: String,
+  leaveToClass: String,
+  enterActiveClass: String,
+  leaveActiveClass: String,
+  appearClass: String,
+  appearActiveClass: String,
+  appearToClass: String,
+  duration: [Number, String, Object]
+}
+
+// in case the child is also an abstract component, e.g. <keep-alive>
+// we want to recursively retrieve the real component to be rendered
+function getRealChild (vnode: ?VNode): ?VNode {
+  const compOptions: ?VNodeComponentOptions = vnode && vnode.componentOptions
+  if (compOptions && compOptions.Ctor.options.abstract) {
+    return getRealChild(getFirstComponentChild(compOptions.children))
+  } else {
+    return vnode
+  }
+}
+
+export function extractTransitionData (comp: Component): Object {
+  const data = {}
+  const options: ComponentOptions = comp.$options
+  // props
+  for (const key in options.propsData) {
+    data[key] = comp[key]
+  }
+  // events.
+  // extract listeners and pass them directly to the transition methods
+  const listeners: ?Object = options._parentListeners
+  for (const key in listeners) {
+    data[camelize(key)] = listeners[key]
+  }
+  return data
+}
+
+function placeholder (h: Function, rawChild: VNode): ?VNode {
+  if (/\d-keep-alive$/.test(rawChild.tag)) {
+    return h('keep-alive', {
+      props: rawChild.componentOptions.propsData
+    })
+  }
+}
+
+function hasParentTransition (vnode: VNode): ?boolean {
+  while ((vnode = vnode.parent)) {
+    if (vnode.data.transition) {
+      return true
+    }
+  }
+}
+
+function isSameChild (child: VNode, oldChild: VNode): boolean {
+  return oldChild.key === child.key && oldChild.tag === child.tag
+}
+
+export default {
+  name: 'transition',
+  props: transitionProps,
+  abstract: true,
+
+  render (h: Function) {
+    let children: ?Array<VNode> = this.$slots.default
+    if (!children) {
+      return
+    }
+
+    // filter out text nodes (possible whitespaces)
+    children = children.filter((c: VNode) => c.tag)
+    /* istanbul ignore if */
+    if (!children.length) {
+      return
+    }
+
+    // warn multiple elements
+    if (process.env.NODE_ENV !== 'production' && children.length > 1) {
+      warn(
+        '<transition> can only be used on a single element. Use ' +
+        '<transition-group> for lists.',
+        this.$parent
+      )
+    }
+
+    const mode: string = this.mode
+
+    // warn invalid mode
+    if (process.env.NODE_ENV !== 'production' &&
+      mode && mode !== 'in-out' && mode !== 'out-in'
+    ) {
+      warn(
+        'invalid <transition> mode: ' + mode,
+        this.$parent
+      )
+    }
+
+    const rawChild: VNode = children[0]
+
+    // if this is a component root node and the component's
+    // parent container node also has transition, skip.
+    if (hasParentTransition(this.$vnode)) {
+      return rawChild
+    }
+
+    // apply transition data to child
+    // use getRealChild() to ignore abstract components e.g. keep-alive
+    const child: ?VNode = getRealChild(rawChild)
+    /* istanbul ignore if */
+    if (!child) {
+      return rawChild
+    }
+
+    if (this._leaving) {
+      return placeholder(h, rawChild)
+    }
+
+    // ensure a key that is unique to the vnode type and to this transition
+    // component instance. This key will be used to remove pending leaving nodes
+    // during entering.
+    const id: string = `__transition-${this._uid}-`
+    child.key = child.key == null
+      ? id + child.tag
+      : isPrimitive(child.key)
+        ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
+        : child.key
+
+    const data: Object = (child.data || (child.data = {})).transition = extractTransitionData(this)
+    const oldRawChild: VNode = this._vnode
+    const oldChild: VNode = getRealChild(oldRawChild)
+
+    // mark v-show
+    // so that the transition module can hand over the control to the directive
+    if (child.data.directives && child.data.directives.some(d => d.name === 'show')) {
+      child.data.show = true
+    }
+
+    if (oldChild && oldChild.data && !isSameChild(child, oldChild)) {
+      // replace old child transition data with fresh one
+      // important for dynamic transitions!
+      const oldData: Object = oldChild && (oldChild.data.transition = extend({}, data))
+      // handle transition mode
+      if (mode === 'out-in') {
+        // return placeholder node and queue update when leave finishes
+        this._leaving = true
+        mergeVNodeHook(oldData, 'afterLeave', () => {
+          this._leaving = false
+          this.$forceUpdate()
+        })
+        return placeholder(h, rawChild)
+      } else if (mode === 'in-out') {
+        let delayedLeave
+        const performLeave = () => { delayedLeave() }
+        mergeVNodeHook(data, 'afterEnter', performLeave)
+        mergeVNodeHook(data, 'enterCancelled', performLeave)
+        mergeVNodeHook(oldData, 'delayLeave', leave => { delayedLeave = leave })
+      }
+    }
+
+    return rawChild
+  }
+}

node_modules/vue/src/platforms/web/runtime/directives/index.js

@@ -0,0 +1,7 @@
+import model from './model'
+import show from './show'
+
+export default {
+  model,
+  show
+}

node_modules/vue/src/platforms/web/runtime/directives/model.js

@@ -0,0 +1,132 @@
+/**
+ * Not type checking this file because flow doesn't like attaching
+ * properties to Elements.
+ */
+
+import { looseEqual, looseIndexOf } from 'shared/util'
+import { warn, isAndroid, isIE9, isIE, isEdge } from 'core/util/index'
+
+/* istanbul ignore if */
+if (isIE9) {
+  // http://www.matts411.com/post/internet-explorer-9-oninput/
+  document.addEventListener('selectionchange', () => {
+    const el = document.activeElement
+    if (el && el.vmodel) {
+      trigger(el, 'input')
+    }
+  })
+}
+
+export default {
+  inserted (el, binding, vnode) {
+    if (vnode.tag === 'select') {
+      const cb = () => {
+        setSelected(el, binding, vnode.context)
+      }
+      cb()
+      /* istanbul ignore if */
+      if (isIE || isEdge) {
+        setTimeout(cb, 0)
+      }
+    } else if (vnode.tag === 'textarea' || el.type === 'text' || el.type === 'password') {
+      el._vModifiers = binding.modifiers
+      if (!binding.modifiers.lazy) {
+        // Safari < 10.2 & UIWebView doesn't fire compositionend when
+        // switching focus before confirming composition choice
+        // this also fixes the issue where some browsers e.g. iOS Chrome
+        // fires "change" instead of "input" on autocomplete.
+        el.addEventListener('change', onCompositionEnd)
+        if (!isAndroid) {
+          el.addEventListener('compositionstart', onCompositionStart)
+          el.addEventListener('compositionend', onCompositionEnd)
+        }
+        /* istanbul ignore if */
+        if (isIE9) {
+          el.vmodel = true
+        }
+      }
+    }
+  },
+  componentUpdated (el, binding, vnode) {
+    if (vnode.tag === 'select') {
+      setSelected(el, binding, vnode.context)
+      // in case the options rendered by v-for have changed,
+      // it's possible that the value is out-of-sync with the rendered options.
+      // detect such cases and filter out values that no longer has a matching
+      // option in the DOM.
+      const needReset = el.multiple
+        ? binding.value.some(v => hasNoMatchingOption(v, el.options))
+        : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, el.options)
+      if (needReset) {
+        trigger(el, 'change')
+      }
+    }
+  }
+}
+
+function setSelected (el, binding, vm) {
+  const value = binding.value
+  const isMultiple = el.multiple
+  if (isMultiple && !Array.isArray(value)) {
+    process.env.NODE_ENV !== 'production' && warn(
+      `<select multiple v-model="${binding.expression}"> ` +
+      `expects an Array value for its binding, but got ${
+        Object.prototype.toString.call(value).slice(8, -1)
+      }`,
+      vm
+    )
+    return
+  }
+  let selected, option
+  for (let i = 0, l = el.options.length; i < l; i++) {
+    option = el.options[i]
+    if (isMultiple) {
+      selected = looseIndexOf(value, getValue(option)) > -1
+      if (option.selected !== selected) {
+        option.selected = selected
+      }
+    } else {
+      if (looseEqual(getValue(option), value)) {
+        if (el.selectedIndex !== i) {
+          el.selectedIndex = i
+        }
+        return
+      }
+    }
+  }
+  if (!isMultiple) {
+    el.selectedIndex = -1
+  }
+}
+
+function hasNoMatchingOption (value, options) {
+  for (let i = 0, l = options.length; i < l; i++) {
+    if (looseEqual(getValue(options[i]), value)) {
+      return false
+    }
+  }
+  return true
+}
+
+function getValue (option) {
+  return '_value' in option
+    ? option._value
+    : option.value
+}
+
+function onCompositionStart (e) {
+  e.target.composing = true
+}
+
+function onCompositionEnd (e) {
+  // prevent triggering an input event for no reason
+  if (!e.target.composing) return
+  e.target.composing = false
+  trigger(e.target, 'input')
+}
+
+function trigger (el, type) {
+  const e = document.createEvent('HTMLEvents')
+  e.initEvent(type, true, true)
+  el.dispatchEvent(e)
+}

node_modules/vue/src/platforms/web/runtime/directives/show.js

@@ -0,0 +1,61 @@
+/* @flow */
+
+import { isIE9 } from 'core/util/env'
+import { enter, leave } from '../modules/transition'
+
+// recursively search for possible transition defined inside the component root
+function locateNode (vnode: VNode): VNodeWithData {
+  return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
+    ? locateNode(vnode.componentInstance._vnode)
+    : vnode
+}
+
+export default {
+  bind (el: any, { value }: VNodeDirective, vnode: VNodeWithData) {
+    vnode = locateNode(vnode)
+    const transition = vnode.data && vnode.data.transition
+    const originalDisplay = el.__vOriginalDisplay =
+      el.style.display === 'none' ? '' : el.style.display
+    if (value && transition && !isIE9) {
+      vnode.data.show = true
+      enter(vnode, () => {
+        el.style.display = originalDisplay
+      })
+    } else {
+      el.style.display = value ? originalDisplay : 'none'
+    }
+  },
+
+  update (el: any, { value, oldValue }: VNodeDirective, vnode: VNodeWithData) {
+    /* istanbul ignore if */
+    if (value === oldValue) return
+    vnode = locateNode(vnode)
+    const transition = vnode.data && vnode.data.transition
+    if (transition && !isIE9) {
+      vnode.data.show = true
+      if (value) {
+        enter(vnode, () => {
+          el.style.display = el.__vOriginalDisplay
+        })
+      } else {
+        leave(vnode, () => {
+          el.style.display = 'none'
+        })
+      }
+    } else {
+      el.style.display = value ? el.__vOriginalDisplay : 'none'
+    }
+  },
+
+  unbind (
+    el: any,
+    binding: VNodeDirective,
+    vnode: VNodeWithData,
+    oldVnode: VNodeWithData,
+    isDestroy: boolean
+  ) {
+    if (!isDestroy) {
+      el.style.display = el.__vOriginalDisplay
+    }
+  }
+}

node_modules/vue/src/platforms/web/runtime/index.js

@@ -0,0 +1,70 @@
+/* @flow */
+
+import Vue from 'core/index'
+import config from 'core/config'
+import { extend, noop } from 'shared/util'
+import { mountComponent } from 'core/instance/lifecycle'
+import { devtools, inBrowser, isChrome } from 'core/util/index'
+
+import {
+  query,
+  mustUseProp,
+  isReservedTag,
+  isReservedAttr,
+  getTagNamespace,
+  isUnknownElement
+} from 'web/util/index'
+
+import { patch } from './patch'
+import platformDirectives from './directives/index'
+import platformComponents from './components/index'
+
+// install platform specific utils
+Vue.config.mustUseProp = mustUseProp
+Vue.config.isReservedTag = isReservedTag
+Vue.config.isReservedAttr = isReservedAttr
+Vue.config.getTagNamespace = getTagNamespace
+Vue.config.isUnknownElement = isUnknownElement
+
+// install platform runtime directives & components
+extend(Vue.options.directives, platformDirectives)
+extend(Vue.options.components, platformComponents)
+
+// install platform patch function
+Vue.prototype.__patch__ = inBrowser ? patch : noop
+
+// public mount method
+Vue.prototype.$mount = function (
+  el?: string | Element,
+  hydrating?: boolean
+): Component {
+  el = el && inBrowser ? query(el) : undefined
+  return mountComponent(this, el, hydrating)
+}
+
+// devtools global hook
+/* istanbul ignore next */
+setTimeout(() => {
+  if (config.devtools) {
+    if (devtools) {
+      devtools.emit('init', Vue)
+    } else if (process.env.NODE_ENV !== 'production' && isChrome) {
+      console[console.info ? 'info' : 'log'](
+        'Download the Vue Devtools extension for a better development experience:\n' +
+        'https://github.com/vuejs/vue-devtools'
+      )
+    }
+  }
+  if (process.env.NODE_ENV !== 'production' &&
+    config.productionTip !== false &&
+    inBrowser && typeof console !== 'undefined'
+  ) {
+    console[console.info ? 'info' : 'log'](
+      `You are running Vue in development mode.\n` +
+      `Make sure to turn on production mode when deploying for production.\n` +
+      `See more tips at https://vuejs.org/guide/deployment.html`
+    )
+  }
+}, 0)
+
+export default Vue

node_modules/vue/src/platforms/web/runtime/modules/attrs.js

@@ -0,0 +1,85 @@
+/* @flow */
+
+import { isIE9 } from 'core/util/env'
+
+import {
+  extend,
+  isDef,
+  isUndef
+} from 'shared/util'
+
+import {
+  isXlink,
+  xlinkNS,
+  getXlinkProp,
+  isBooleanAttr,
+  isEnumeratedAttr,
+  isFalsyAttrValue
+} from 'web/util/index'
+
+function updateAttrs (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
+    return
+  }
+  let key, cur, old
+  const elm = vnode.elm
+  const oldAttrs = oldVnode.data.attrs || {}
+  let attrs: any = vnode.data.attrs || {}
+  // clone observed objects, as the user probably wants to mutate it
+  if (isDef(attrs.__ob__)) {
+    attrs = vnode.data.attrs = extend({}, attrs)
+  }
+
+  for (key in attrs) {
+    cur = attrs[key]
+    old = oldAttrs[key]
+    if (old !== cur) {
+      setAttr(elm, key, cur)
+    }
+  }
+  // #4391: in IE9, setting type can reset value for input[type=radio]
+  /* istanbul ignore if */
+  if (isIE9 && attrs.value !== oldAttrs.value) {
+    setAttr(elm, 'value', attrs.value)
+  }
+  for (key in oldAttrs) {
+    if (isUndef(attrs[key])) {
+      if (isXlink(key)) {
+        elm.removeAttributeNS(xlinkNS, getXlinkProp(key))
+      } else if (!isEnumeratedAttr(key)) {
+        elm.removeAttribute(key)
+      }
+    }
+  }
+}
+
+function setAttr (el: Element, key: string, value: any) {
+  if (isBooleanAttr(key)) {
+    // set attribute for blank value
+    // e.g. <option disabled>Select one</option>
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key)
+    } else {
+      el.setAttribute(key, key)
+    }
+  } else if (isEnumeratedAttr(key)) {
+    el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true')
+  } else if (isXlink(key)) {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttributeNS(xlinkNS, getXlinkProp(key))
+    } else {
+      el.setAttributeNS(xlinkNS, key, value)
+    }
+  } else {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key)
+    } else {
+      el.setAttribute(key, value)
+    }
+  }
+}
+
+export default {
+  create: updateAttrs,
+  update: updateAttrs
+}

node_modules/vue/src/platforms/web/runtime/modules/class.js

@@ -0,0 +1,48 @@
+/* @flow */
+
+import {
+  isDef,
+  isUndef
+} from 'shared/util'
+
+import {
+  concat,
+  stringifyClass,
+  genClassForVnode
+} from 'web/util/index'
+
+function updateClass (oldVnode: any, vnode: any) {
+  const el = vnode.elm
+  const data: VNodeData = vnode.data
+  const oldData: VNodeData = oldVnode.data
+  if (
+    isUndef(data.staticClass) &&
+    isUndef(data.class) && (
+      isUndef(oldData) || (
+        isUndef(oldData.staticClass) &&
+        isUndef(oldData.class)
+      )
+    )
+  ) {
+    return
+  }
+
+  let cls = genClassForVnode(vnode)
+
+  // handle transition classes
+  const transitionClass = el._transitionClasses
+  if (isDef(transitionClass)) {
+    cls = concat(cls, stringifyClass(transitionClass))
+  }
+
+  // set the class
+  if (cls !== el._prevClass) {
+    el.setAttribute('class', cls)
+    el._prevClass = cls
+  }
+}
+
+export default {
+  create: updateClass,
+  update: updateClass
+}

node_modules/vue/src/platforms/web/runtime/modules/dom-props.js

@@ -0,0 +1,83 @@
+/* @flow */
+
+import { isDef, isUndef, extend, toNumber } from 'shared/util'
+
+function updateDOMProps (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
+    return
+  }
+  let key, cur
+  const elm: any = vnode.elm
+  const oldProps = oldVnode.data.domProps || {}
+  let props = vnode.data.domProps || {}
+  // clone observed objects, as the user probably wants to mutate it
+  if (isDef(props.__ob__)) {
+    props = vnode.data.domProps = extend({}, props)
+  }
+
+  for (key in oldProps) {
+    if (isUndef(props[key])) {
+      elm[key] = ''
+    }
+  }
+  for (key in props) {
+    cur = props[key]
+    // ignore children if the node has textContent or innerHTML,
+    // as these will throw away existing DOM nodes and cause removal errors
+    // on subsequent patches (#3360)
+    if (key === 'textContent' || key === 'innerHTML') {
+      if (vnode.children) vnode.children.length = 0
+      if (cur === oldProps[key]) continue
+    }
+
+    if (key === 'value') {
+      // store value as _value as well since
+      // non-string values will be stringified
+      elm._value = cur
+      // avoid resetting cursor position when value is the same
+      const strCur = isUndef(cur) ? '' : String(cur)
+      if (shouldUpdateValue(elm, vnode, strCur)) {
+        elm.value = strCur
+      }
+    } else {
+      elm[key] = cur
+    }
+  }
+}
+
+// check platforms/web/util/attrs.js acceptValue
+type acceptValueElm = HTMLInputElement | HTMLSelectElement | HTMLOptionElement;
+
+function shouldUpdateValue (
+  elm: acceptValueElm,
+  vnode: VNodeWithData,
+  checkVal: string
+): boolean {
+  return (!elm.composing && (
+    vnode.tag === 'option' ||
+    isDirty(elm, checkVal) ||
+    isInputChanged(elm, checkVal)
+  ))
+}
+
+function isDirty (elm: acceptValueElm, checkVal: string): boolean {
+  // return true when textbox (.number and .trim) loses focus and its value is not equal to the updated value
+  return document.activeElement !== elm && elm.value !== checkVal
+}
+
+function isInputChanged (elm: any, newVal: string): boolean {
+  const value = elm.value
+  const modifiers = elm._vModifiers // injected by v-model runtime
+  if ((isDef(modifiers) && modifiers.number) || elm.type === 'number') {
+    return toNumber(value) !== toNumber(newVal)
+  }
+  if (isDef(modifiers) && modifiers.trim) {
+    return value.trim() !== newVal.trim()
+  }
+  return value !== newVal
+}
+
+export default {
+  create: updateDOMProps,
+  update: updateDOMProps
+}

node_modules/vue/src/platforms/web/runtime/modules/events.js

@@ -0,0 +1,82 @@
+/* @flow */
+
+import { isDef, isUndef } from 'shared/util'
+import { updateListeners } from 'core/vdom/helpers/index'
+import { isChrome, isIE, supportsPassive } from 'core/util/env'
+import { RANGE_TOKEN, CHECKBOX_RADIO_TOKEN } from 'web/compiler/directives/model'
+
+// normalize v-model event tokens that can only be determined at runtime.
+// it's important to place the event as the first in the array because
+// the whole point is ensuring the v-model callback gets called before
+// user-attached handlers.
+function normalizeEvents (on) {
+  let event
+  /* istanbul ignore if */
+  if (isDef(on[RANGE_TOKEN])) {
+    // IE input[type=range] only supports `change` event
+    event = isIE ? 'change' : 'input'
+    on[event] = [].concat(on[RANGE_TOKEN], on[event] || [])
+    delete on[RANGE_TOKEN]
+  }
+  if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
+    // Chrome fires microtasks in between click/change, leads to #4521
+    event = isChrome ? 'click' : 'change'
+    on[event] = [].concat(on[CHECKBOX_RADIO_TOKEN], on[event] || [])
+    delete on[CHECKBOX_RADIO_TOKEN]
+  }
+}
+
+let target: HTMLElement
+
+function add (
+  event: string,
+  handler: Function,
+  once: boolean,
+  capture: boolean,
+  passive: boolean
+) {
+  if (once) {
+    const oldHandler = handler
+    const _target = target // save current target element in closure
+    handler = function (ev) {
+      const res = arguments.length === 1
+        ? oldHandler(ev)
+        : oldHandler.apply(null, arguments)
+      if (res !== null) {
+        remove(event, handler, capture, _target)
+      }
+    }
+  }
+  target.addEventListener(
+    event,
+    handler,
+    supportsPassive
+      ? { capture, passive }
+      : capture
+  )
+}
+
+function remove (
+  event: string,
+  handler: Function,
+  capture: boolean,
+  _target?: HTMLElement
+) {
+  (_target || target).removeEventListener(event, handler, capture)
+}
+
+function updateDOMListeners (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
+    return
+  }
+  const on = vnode.data.on || {}
+  const oldOn = oldVnode.data.on || {}
+  target = vnode.elm
+  normalizeEvents(on)
+  updateListeners(on, oldOn, add, remove, vnode.context)
+}
+
+export default {
+  create: updateDOMListeners,
+  update: updateDOMListeners
+}

node_modules/vue/src/platforms/web/runtime/modules/index.js

@@ -0,0 +1,15 @@
+import attrs from './attrs'
+import klass from './class'
+import events from './events'
+import domProps from './dom-props'
+import style from './style'
+import transition from './transition'
+
+export default [
+  attrs,
+  klass,
+  events,
+  domProps,
+  style,
+  transition
+]

node_modules/vue/src/platforms/web/runtime/modules/style.js

@@ -0,0 +1,93 @@
+/* @flow */
+
+import { getStyle, normalizeStyleBinding } from 'web/util/style'
+import { cached, camelize, extend, isDef, isUndef } from 'shared/util'
+
+const cssVarRE = /^--/
+const importantRE = /\s*!important$/
+const setProp = (el, name, val) => {
+  /* istanbul ignore if */
+  if (cssVarRE.test(name)) {
+    el.style.setProperty(name, val)
+  } else if (importantRE.test(val)) {
+    el.style.setProperty(name, val.replace(importantRE, ''), 'important')
+  } else {
+    const normalizedName = normalize(name)
+    if (Array.isArray(val)) {
+      // Support values array created by autoprefixer, e.g.
+      // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
+      // Set them one by one, and the browser will only set those it can recognize
+      for (let i = 0, len = val.length; i < len; i++) {
+        el.style[normalizedName] = val[i]
+      }
+    } else {
+      el.style[normalizedName] = val
+    }
+  }
+}
+
+const prefixes = ['Webkit', 'Moz', 'ms']
+
+let testEl
+const normalize = cached(function (prop) {
+  testEl = testEl || document.createElement('div')
+  prop = camelize(prop)
+  if (prop !== 'filter' && (prop in testEl.style)) {
+    return prop
+  }
+  const upper = prop.charAt(0).toUpperCase() + prop.slice(1)
+  for (let i = 0; i < prefixes.length; i++) {
+    const prefixed = prefixes[i] + upper
+    if (prefixed in testEl.style) {
+      return prefixed
+    }
+  }
+})
+
+function updateStyle (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  const data = vnode.data
+  const oldData = oldVnode.data
+
+  if (isUndef(data.staticStyle) && isUndef(data.style) &&
+    isUndef(oldData.staticStyle) && isUndef(oldData.style)
+  ) {
+    return
+  }
+
+  let cur, name
+  const el: any = vnode.elm
+  const oldStaticStyle: any = oldData.staticStyle
+  const oldStyleBinding: any = oldData.normalizedStyle || oldData.style || {}
+
+  // if static style exists, stylebinding already merged into it when doing normalizeStyleData
+  const oldStyle = oldStaticStyle || oldStyleBinding
+
+  const style = normalizeStyleBinding(vnode.data.style) || {}
+
+  // store normalized style under a different key for next diff
+  // make sure to clone it if it's reactive, since the user likley wants
+  // to mutate it.
+  vnode.data.normalizedStyle = isDef(style.__ob__)
+    ? extend({}, style)
+    : style
+
+  const newStyle = getStyle(vnode, true)
+
+  for (name in oldStyle) {
+    if (isUndef(newStyle[name])) {
+      setProp(el, name, '')
+    }
+  }
+  for (name in newStyle) {
+    cur = newStyle[name]
+    if (cur !== oldStyle[name]) {
+      // ie9 setting to null has no effect, must use empty string
+      setProp(el, name, cur == null ? '' : cur)
+    }
+  }
+}
+
+export default {
+  create: updateStyle,
+  update: updateStyle
+}

node_modules/vue/src/platforms/web/runtime/modules/transition.js

@@ -0,0 +1,339 @@
+/* @flow */
+
+import { inBrowser, isIE9, warn } from 'core/util/index'
+import { mergeVNodeHook } from 'core/vdom/helpers/index'
+import { activeInstance } from 'core/instance/lifecycle'
+
+import {
+  once,
+  isDef,
+  isUndef,
+  isObject,
+  toNumber
+} from 'shared/util'
+
+import {
+  nextFrame,
+  resolveTransition,
+  whenTransitionEnds,
+  addTransitionClass,
+  removeTransitionClass
+} from '../transition-util'
+
+export function enter (vnode: VNodeWithData, toggleDisplay: ?() => void) {
+  const el: any = vnode.elm
+
+  // call leave callback now
+  if (isDef(el._leaveCb)) {
+    el._leaveCb.cancelled = true
+    el._leaveCb()
+  }
+
+  const data = resolveTransition(vnode.data.transition)
+  if (isUndef(data)) {
+    return
+  }
+
+  /* istanbul ignore if */
+  if (isDef(el._enterCb) || el.nodeType !== 1) {
+    return
+  }
+
+  const {
+    css,
+    type,
+    enterClass,
+    enterToClass,
+    enterActiveClass,
+    appearClass,
+    appearToClass,
+    appearActiveClass,
+    beforeEnter,
+    enter,
+    afterEnter,
+    enterCancelled,
+    beforeAppear,
+    appear,
+    afterAppear,
+    appearCancelled,
+    duration
+  } = data
+
+  // activeInstance will always be the <transition> component managing this
+  // transition. One edge case to check is when the <transition> is placed
+  // as the root node of a child component. In that case we need to check
+  // <transition>'s parent for appear check.
+  let context = activeInstance
+  let transitionNode = activeInstance.$vnode
+  while (transitionNode && transitionNode.parent) {
+    transitionNode = transitionNode.parent
+    context = transitionNode.context
+  }
+
+  const isAppear = !context._isMounted || !vnode.isRootInsert
+
+  if (isAppear && !appear && appear !== '') {
+    return
+  }
+
+  const startClass = isAppear && appearClass
+    ? appearClass
+    : enterClass
+  const activeClass = isAppear && appearActiveClass
+    ? appearActiveClass
+    : enterActiveClass
+  const toClass = isAppear && appearToClass
+    ? appearToClass
+    : enterToClass
+
+  const beforeEnterHook = isAppear
+    ? (beforeAppear || beforeEnter)
+    : beforeEnter
+  const enterHook = isAppear
+    ? (typeof appear === 'function' ? appear : enter)
+    : enter
+  const afterEnterHook = isAppear
+    ? (afterAppear || afterEnter)
+    : afterEnter
+  const enterCancelledHook = isAppear
+    ? (appearCancelled || enterCancelled)
+    : enterCancelled
+
+  const explicitEnterDuration: any = toNumber(
+    isObject(duration)
+      ? duration.enter
+      : duration
+  )
+
+  if (process.env.NODE_ENV !== 'production' && explicitEnterDuration != null) {
+    checkDuration(explicitEnterDuration, 'enter', vnode)
+  }
+
+  const expectsCSS = css !== false && !isIE9
+  const userWantsControl = getHookArgumentsLength(enterHook)
+
+  const cb = el._enterCb = once(() => {
+    if (expectsCSS) {
+      removeTransitionClass(el, toClass)
+      removeTransitionClass(el, activeClass)
+    }
+    if (cb.cancelled) {
+      if (expectsCSS) {
+        removeTransitionClass(el, startClass)
+      }
+      enterCancelledHook && enterCancelledHook(el)
+    } else {
+      afterEnterHook && afterEnterHook(el)
+    }
+    el._enterCb = null
+  })
+
+  if (!vnode.data.show) {
+    // remove pending leave element on enter by injecting an insert hook
+    mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', () => {
+      const parent = el.parentNode
+      const pendingNode = parent && parent._pending && parent._pending[vnode.key]
+      if (pendingNode &&
+        pendingNode.tag === vnode.tag &&
+        pendingNode.elm._leaveCb
+      ) {
+        pendingNode.elm._leaveCb()
+      }
+      enterHook && enterHook(el, cb)
+    })
+  }
+
+  // start enter transition
+  beforeEnterHook && beforeEnterHook(el)
+  if (expectsCSS) {
+    addTransitionClass(el, startClass)
+    addTransitionClass(el, activeClass)
+    nextFrame(() => {
+      addTransitionClass(el, toClass)
+      removeTransitionClass(el, startClass)
+      if (!cb.cancelled && !userWantsControl) {
+        if (isValidDuration(explicitEnterDuration)) {
+          setTimeout(cb, explicitEnterDuration)
+        } else {
+          whenTransitionEnds(el, type, cb)
+        }
+      }
+    })
+  }
+
+  if (vnode.data.show) {
+    toggleDisplay && toggleDisplay()
+    enterHook && enterHook(el, cb)
+  }
+
+  if (!expectsCSS && !userWantsControl) {
+    cb()
+  }
+}
+
+export function leave (vnode: VNodeWithData, rm: Function) {
+  const el: any = vnode.elm
+
+  // call enter callback now
+  if (isDef(el._enterCb)) {
+    el._enterCb.cancelled = true
+    el._enterCb()
+  }
+
+  const data = resolveTransition(vnode.data.transition)
+  if (isUndef(data)) {
+    return rm()
+  }
+
+  /* istanbul ignore if */
+  if (isDef(el._leaveCb) || el.nodeType !== 1) {
+    return
+  }
+
+  const {
+    css,
+    type,
+    leaveClass,
+    leaveToClass,
+    leaveActiveClass,
+    beforeLeave,
+    leave,
+    afterLeave,
+    leaveCancelled,
+    delayLeave,
+    duration
+  } = data
+
+  const expectsCSS = css !== false && !isIE9
+  const userWantsControl = getHookArgumentsLength(leave)
+
+  const explicitLeaveDuration: any = toNumber(
+    isObject(duration)
+      ? duration.leave
+      : duration
+  )
+
+  if (process.env.NODE_ENV !== 'production' && isDef(explicitLeaveDuration)) {
+    checkDuration(explicitLeaveDuration, 'leave', vnode)
+  }
+
+  const cb = el._leaveCb = once(() => {
+    if (el.parentNode && el.parentNode._pending) {
+      el.parentNode._pending[vnode.key] = null
+    }
+    if (expectsCSS) {
+      removeTransitionClass(el, leaveToClass)
+      removeTransitionClass(el, leaveActiveClass)
+    }
+    if (cb.cancelled) {
+      if (expectsCSS) {
+        removeTransitionClass(el, leaveClass)
+      }
+      leaveCancelled && leaveCancelled(el)
+    } else {
+      rm()
+      afterLeave && afterLeave(el)
+    }
+    el._leaveCb = null
+  })
+
+  if (delayLeave) {
+    delayLeave(performLeave)
+  } else {
+    performLeave()
+  }
+
+  function performLeave () {
+    // the delayed leave may have already been cancelled
+    if (cb.cancelled) {
+      return
+    }
+    // record leaving element
+    if (!vnode.data.show) {
+      (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key: any)] = vnode
+    }
+    beforeLeave && beforeLeave(el)
+    if (expectsCSS) {
+      addTransitionClass(el, leaveClass)
+      addTransitionClass(el, leaveActiveClass)
+      nextFrame(() => {
+        addTransitionClass(el, leaveToClass)
+        removeTransitionClass(el, leaveClass)
+        if (!cb.cancelled && !userWantsControl) {
+          if (isValidDuration(explicitLeaveDuration)) {
+            setTimeout(cb, explicitLeaveDuration)
+          } else {
+            whenTransitionEnds(el, type, cb)
+          }
+        }
+      })
+    }
+    leave && leave(el, cb)
+    if (!expectsCSS && !userWantsControl) {
+      cb()
+    }
+  }
+}
+
+// only used in dev mode
+function checkDuration (val, name, vnode) {
+  if (typeof val !== 'number') {
+    warn(
+      `<transition> explicit ${name} duration is not a valid number - ` +
+      `got ${JSON.stringify(val)}.`,
+      vnode.context
+    )
+  } else if (isNaN(val)) {
+    warn(
+      `<transition> explicit ${name} duration is NaN - ` +
+      'the duration expression might be incorrect.',
+      vnode.context
+    )
+  }
+}
+
+function isValidDuration (val) {
+  return typeof val === 'number' && !isNaN(val)
+}
+
+/**
+ * Normalize a transition hook's argument length. The hook may be:
+ * - a merged hook (invoker) with the original in .fns
+ * - a wrapped component method (check ._length)
+ * - a plain function (.length)
+ */
+function getHookArgumentsLength (fn: Function): boolean {
+  if (isUndef(fn)) {
+    return false
+  }
+  const invokerFns = fn.fns
+  if (isDef(invokerFns)) {
+    // invoker
+    return getHookArgumentsLength(
+      Array.isArray(invokerFns)
+        ? invokerFns[0]
+        : invokerFns
+    )
+  } else {
+    return (fn._length || fn.length) > 1
+  }
+}
+
+function _enter (_: any, vnode: VNodeWithData) {
+  if (vnode.data.show !== true) {
+    enter(vnode)
+  }
+}
+
+export default inBrowser ? {
+  create: _enter,
+  activate: _enter,
+  remove (vnode: VNode, rm: Function) {
+    /* istanbul ignore else */
+    if (vnode.data.show !== true) {
+      leave(vnode, rm)
+    } else {
+      rm()
+    }
+  }
+} : {}

node_modules/vue/src/platforms/web/runtime/node-ops.js

@@ -0,0 +1,59 @@
+/* @flow */
+
+import { namespaceMap } from 'web/util/index'
+
+export function createElement (tagName: string, vnode: VNode): Element {
+  const elm = document.createElement(tagName)
+  if (tagName !== 'select') {
+    return elm
+  }
+  // false or null will remove the attribute but undefined will not
+  if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
+    elm.setAttribute('multiple', 'multiple')
+  }
+  return elm
+}
+
+export function createElementNS (namespace: string, tagName: string): Element {
+  return document.createElementNS(namespaceMap[namespace], tagName)
+}
+
+export function createTextNode (text: string): Text {
+  return document.createTextNode(text)
+}
+
+export function createComment (text: string): Comment {
+  return document.createComment(text)
+}
+
+export function insertBefore (parentNode: Node, newNode: Node, referenceNode: Node) {
+  parentNode.insertBefore(newNode, referenceNode)
+}
+
+export function removeChild (node: Node, child: Node) {
+  node.removeChild(child)
+}
+
+export function appendChild (node: Node, child: Node) {
+  node.appendChild(child)
+}
+
+export function parentNode (node: Node): ?Node {
+  return node.parentNode
+}
+
+export function nextSibling (node: Node): ?Node {
+  return node.nextSibling
+}
+
+export function tagName (node: Element): string {
+  return node.tagName
+}
+
+export function setTextContent (node: Node, text: string) {
+  node.textContent = text
+}
+
+export function setAttribute (node: Element, key: string, val: string) {
+  node.setAttribute(key, val)
+}

node_modules/vue/src/platforms/web/runtime/patch.js

@@ -0,0 +1,12 @@
+/* @flow */
+
+import * as nodeOps from 'web/runtime/node-ops'
+import { createPatchFunction } from 'core/vdom/patch'
+import baseModules from 'core/vdom/modules/index'
+import platformModules from 'web/runtime/modules/index'
+
+// the directive module should be applied last, after all
+// built-in modules have been applied.
+const modules = platformModules.concat(baseModules)
+
+export const patch: Function = createPatchFunction({ nodeOps, modules })

node_modules/vue/src/platforms/web/runtime/transition-util.js

@@ -0,0 +1,180 @@
+/* @flow */
+
+import { inBrowser, isIE9 } from 'core/util/index'
+import { addClass, removeClass } from './class-util'
+import { remove, extend, cached } from 'shared/util'
+
+export function resolveTransition (def?: string | Object): ?Object {
+  if (!def) {
+    return
+  }
+  /* istanbul ignore else */
+  if (typeof def === 'object') {
+    const res = {}
+    if (def.css !== false) {
+      extend(res, autoCssTransition(def.name || 'v'))
+    }
+    extend(res, def)
+    return res
+  } else if (typeof def === 'string') {
+    return autoCssTransition(def)
+  }
+}
+
+const autoCssTransition: (name: string) => Object = cached(name => {
+  return {
+    enterClass: `${name}-enter`,
+    enterToClass: `${name}-enter-to`,
+    enterActiveClass: `${name}-enter-active`,
+    leaveClass: `${name}-leave`,
+    leaveToClass: `${name}-leave-to`,
+    leaveActiveClass: `${name}-leave-active`
+  }
+})
+
+export const hasTransition = inBrowser && !isIE9
+const TRANSITION = 'transition'
+const ANIMATION = 'animation'
+
+// Transition property/event sniffing
+export let transitionProp = 'transition'
+export let transitionEndEvent = 'transitionend'
+export let animationProp = 'animation'
+export let animationEndEvent = 'animationend'
+if (hasTransition) {
+  /* istanbul ignore if */
+  if (window.ontransitionend === undefined &&
+    window.onwebkittransitionend !== undefined
+  ) {
+    transitionProp = 'WebkitTransition'
+    transitionEndEvent = 'webkitTransitionEnd'
+  }
+  if (window.onanimationend === undefined &&
+    window.onwebkitanimationend !== undefined
+  ) {
+    animationProp = 'WebkitAnimation'
+    animationEndEvent = 'webkitAnimationEnd'
+  }
+}
+
+// binding to window is necessary to make hot reload work in IE in strict mode
+const raf = inBrowser && window.requestAnimationFrame
+  ? window.requestAnimationFrame.bind(window)
+  : setTimeout
+
+export function nextFrame (fn: Function) {
+  raf(() => {
+    raf(fn)
+  })
+}
+
+export function addTransitionClass (el: any, cls: string) {
+  (el._transitionClasses || (el._transitionClasses = [])).push(cls)
+  addClass(el, cls)
+}
+
+export function removeTransitionClass (el: any, cls: string) {
+  if (el._transitionClasses) {
+    remove(el._transitionClasses, cls)
+  }
+  removeClass(el, cls)
+}
+
+export function whenTransitionEnds (
+  el: Element,
+  expectedType: ?string,
+  cb: Function
+) {
+  const { type, timeout, propCount } = getTransitionInfo(el, expectedType)
+  if (!type) return cb()
+  const event: string = type === TRANSITION ? transitionEndEvent : animationEndEvent
+  let ended = 0
+  const end = () => {
+    el.removeEventListener(event, onEnd)
+    cb()
+  }
+  const onEnd = e => {
+    if (e.target === el) {
+      if (++ended >= propCount) {
+        end()
+      }
+    }
+  }
+  setTimeout(() => {
+    if (ended < propCount) {
+      end()
+    }
+  }, timeout + 1)
+  el.addEventListener(event, onEnd)
+}
+
+const transformRE = /\b(transform|all)(,|$)/
+
+export function getTransitionInfo (el: Element, expectedType?: ?string): {
+  type: ?string;
+  propCount: number;
+  timeout: number;
+  hasTransform: boolean;
+} {
+  const styles: any = window.getComputedStyle(el)
+  const transitionDelays: Array<string> = styles[transitionProp + 'Delay'].split(', ')
+  const transitionDurations: Array<string> = styles[transitionProp + 'Duration'].split(', ')
+  const transitionTimeout: number = getTimeout(transitionDelays, transitionDurations)
+  const animationDelays: Array<string> = styles[animationProp + 'Delay'].split(', ')
+  const animationDurations: Array<string> = styles[animationProp + 'Duration'].split(', ')
+  const animationTimeout: number = getTimeout(animationDelays, animationDurations)
+
+  let type: ?string
+  let timeout = 0
+  let propCount = 0
+  /* istanbul ignore if */
+  if (expectedType === TRANSITION) {
+    if (transitionTimeout > 0) {
+      type = TRANSITION
+      timeout = transitionTimeout
+      propCount = transitionDurations.length
+    }
+  } else if (expectedType === ANIMATION) {
+    if (animationTimeout > 0) {
+      type = ANIMATION
+      timeout = animationTimeout
+      propCount = animationDurations.length
+    }
+  } else {
+    timeout = Math.max(transitionTimeout, animationTimeout)
+    type = timeout > 0
+      ? transitionTimeout > animationTimeout
+        ? TRANSITION
+        : ANIMATION
+      : null
+    propCount = type
+      ? type === TRANSITION
+        ? transitionDurations.length
+        : animationDurations.length
+      : 0
+  }
+  const hasTransform: boolean =
+    type === TRANSITION &&
+    transformRE.test(styles[transitionProp + 'Property'])
+  return {
+    type,
+    timeout,
+    propCount,
+    hasTransform
+  }
+}
+
+function getTimeout (delays: Array<string>, durations: Array<string>): number {
+  /* istanbul ignore next */
+  while (delays.length < durations.length) {
+    delays = delays.concat(delays)
+  }
+
+  return Math.max.apply(null, durations.map((d, i) => {
+    return toMs(d) + toMs(delays[i])
+  }))
+}
+
+function toMs (s: string): number {
+  return Number(s.slice(0, -1)) * 1000
+}

node_modules/vue/src/platforms/web/server-renderer.js

@@ -0,0 +1,26 @@
+/* @flow */
+
+process.env.VUE_ENV = 'server'
+
+import modules from './server/modules/index'
+import baseDirectives from './server/directives/index'
+import { isUnaryTag, canBeLeftOpenTag } from './compiler/util'
+
+import { createRenderer as _createRenderer } from 'server/create-renderer'
+import { createBundleRendererCreator } from 'server/bundle-renderer/create-bundle-renderer'
+
+export function createRenderer (options?: Object = {}): {
+  renderToString: Function,
+  renderToStream: Function
+} {
+  return _createRenderer(Object.assign({}, options, {
+    isUnaryTag,
+    canBeLeftOpenTag,
+    modules,
+    // user can provide server-side implementations for custom directives
+    // when creating the renderer.
+    directives: Object.assign(baseDirectives, options.directives)
+  }))
+}
+
+export const createBundleRenderer = createBundleRendererCreator(createRenderer)

node_modules/vue/src/platforms/web/server/directives/index.js

@@ -0,0 +1,5 @@
+import show from './show'
+
+export default {
+  show
+}

node_modules/vue/src/platforms/web/server/directives/show.js

@@ -0,0 +1,8 @@
+/* @flow */
+
+export default function show (node: VNodeWithData, dir: VNodeDirective) {
+  if (!dir.value) {
+    const style: any = node.data.style || (node.data.style = {})
+    style.display = 'none'
+  }
+}

node_modules/vue/src/platforms/web/server/modules/attrs.js

@@ -0,0 +1,53 @@
+/* @flow */
+
+import { escape } from 'he'
+
+import {
+  isDef,
+  isUndef
+} from 'shared/util'
+
+import {
+  isBooleanAttr,
+  isEnumeratedAttr,
+  isFalsyAttrValue
+} from 'web/util/attrs'
+
+export default function renderAttrs (node: VNodeWithData): string {
+  let attrs = node.data.attrs
+  let res = ''
+
+  let parent = node.parent
+  while (isDef(parent)) {
+    if (isDef(parent.data) && isDef(parent.data.attrs)) {
+      attrs = Object.assign({}, attrs, parent.data.attrs)
+    }
+    parent = parent.parent
+  }
+
+  if (isUndef(attrs)) {
+    return res
+  }
+
+  for (const key in attrs) {
+    if (key === 'style') {
+      // leave it to the style module
+      continue
+    }
+    res += renderAttr(key, attrs[key])
+  }
+  return res
+}
+
+export function renderAttr (key: string, value: string): string {
+  if (isBooleanAttr(key)) {
+    if (!isFalsyAttrValue(value)) {
+      return ` ${key}="${key}"`
+    }
+  } else if (isEnumeratedAttr(key)) {
+    return ` ${key}="${isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true'}"`
+  } else if (!isFalsyAttrValue(value)) {
+    return ` ${key}="${typeof value === 'string' ? escape(value) : value}"`
+  }
+  return ''
+}