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chrosey
2017-09-13 07:52:34 +02:00
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commit 2340b0226b
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node_modules
src
test
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# babel-plugin-transform-es2015-duplicate-keys
> Compile objects with duplicate keys to valid strict ES5.
This plugin actually converts duplicate keys in objects to be computed properties, which then must be handled by the [transform-es2015-computed-properties](http://babeljs.io/docs/plugins/transform-es2015-computed-properties) plugin. The final result won't contain any object literals with duplicate keys.
## Example
**In**
```javascript
var x = { a: 5, a: 6 };
var y = {
get a() {},
set a(x) {},
a: 3
};
```
**Out**
```javascript
var x = { a: 5, ["a"]: 6 };
var y = {
get a() {},
set a(x) {},
["a"]: 3
};
```
## Installation
```sh
npm install --save-dev babel-plugin-transform-es2015-duplicate-keys
```
## Usage
### Via `.babelrc` (Recommended)
**.babelrc**
```json
{
"plugins": ["transform-es2015-duplicate-keys"]
}
```
### Via CLI
```sh
babel --plugins transform-es2015-duplicate-keys script.js
```
### Via Node API
```javascript
require("babel-core").transform("code", {
plugins: ["transform-es2015-duplicate-keys"]
});
```
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"use strict";
exports.__esModule = true;
var _getIterator2 = require("babel-runtime/core-js/get-iterator");
var _getIterator3 = _interopRequireDefault(_getIterator2);
var _create = require("babel-runtime/core-js/object/create");
var _create2 = _interopRequireDefault(_create);
exports.default = function () {
return {
visitor: {
ObjectExpression: function ObjectExpression(path) {
var node = path.node;
var plainProps = node.properties.filter(function (prop) {
return !t.isSpreadProperty(prop) && !prop.computed;
});
var alreadySeenData = (0, _create2.default)(null);
var alreadySeenGetters = (0, _create2.default)(null);
var alreadySeenSetters = (0, _create2.default)(null);
for (var _iterator = plainProps, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
var _ref;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref = _i.value;
}
var prop = _ref;
var name = getName(prop.key);
var isDuplicate = false;
switch (prop.kind) {
case "get":
if (alreadySeenData[name] || alreadySeenGetters[name]) {
isDuplicate = true;
}
alreadySeenGetters[name] = true;
break;
case "set":
if (alreadySeenData[name] || alreadySeenSetters[name]) {
isDuplicate = true;
}
alreadySeenSetters[name] = true;
break;
default:
if (alreadySeenData[name] || alreadySeenGetters[name] || alreadySeenSetters[name]) {
isDuplicate = true;
}
alreadySeenData[name] = true;
}
if (isDuplicate) {
prop.computed = true;
prop.key = t.stringLiteral(name);
}
}
}
}
};
};
var _babelTypes = require("babel-types");
var t = _interopRequireWildcard(_babelTypes);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function getName(key) {
if (t.isIdentifier(key)) {
return key.name;
}
return key.value.toString();
}
module.exports = exports["default"];
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{
"_args": [
[
{
"raw": "babel-plugin-transform-es2015-duplicate-keys@^6.22.0",
"scope": null,
"escapedName": "babel-plugin-transform-es2015-duplicate-keys",
"name": "babel-plugin-transform-es2015-duplicate-keys",
"rawSpec": "^6.22.0",
"spec": ">=6.22.0 <7.0.0",
"type": "range"
},
"c:\\xampp\\htdocs\\laravel\\node_modules\\babel-preset-env"
]
],
"_from": "babel-plugin-transform-es2015-duplicate-keys@>=6.22.0 <7.0.0",
"_id": "babel-plugin-transform-es2015-duplicate-keys@6.24.1",
"_inCache": true,
"_location": "/babel-plugin-transform-es2015-duplicate-keys",
"_nodeVersion": "6.9.0",
"_npmOperationalInternal": {
"host": "packages-12-west.internal.npmjs.com",
"tmp": "tmp/babel-plugin-transform-es2015-duplicate-keys-6.24.1.tgz_1491578348445_0.6595529397018254"
},
"_npmUser": {
"name": "hzoo",
"email": "hi@henryzoo.com"
},
"_npmVersion": "3.10.10",
"_phantomChildren": {},
"_requested": {
"raw": "babel-plugin-transform-es2015-duplicate-keys@^6.22.0",
"scope": null,
"escapedName": "babel-plugin-transform-es2015-duplicate-keys",
"name": "babel-plugin-transform-es2015-duplicate-keys",
"rawSpec": "^6.22.0",
"spec": ">=6.22.0 <7.0.0",
"type": "range"
},
"_requiredBy": [
"/babel-preset-env"
],
"_resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-duplicate-keys/-/babel-plugin-transform-es2015-duplicate-keys-6.24.1.tgz",
"_shasum": "73eb3d310ca969e3ef9ec91c53741a6f1576423e",
"_shrinkwrap": null,
"_spec": "babel-plugin-transform-es2015-duplicate-keys@^6.22.0",
"_where": "c:\\xampp\\htdocs\\laravel\\node_modules\\babel-preset-env",
"dependencies": {
"babel-runtime": "^6.22.0",
"babel-types": "^6.24.1"
},
"description": "Compile objects with duplicate keys to valid strict ES5",
"devDependencies": {
"babel-helper-plugin-test-runner": "^6.24.1"
},
"directories": {},
"dist": {
"shasum": "73eb3d310ca969e3ef9ec91c53741a6f1576423e",
"tarball": "https://registry.npmjs.org/babel-plugin-transform-es2015-duplicate-keys/-/babel-plugin-transform-es2015-duplicate-keys-6.24.1.tgz"
},
"keywords": [
"babel-plugin"
],
"license": "MIT",
"main": "lib/index.js",
"maintainers": [
{
"name": "amasad",
"email": "amjad.masad@gmail.com"
},
{
"name": "hzoo",
"email": "hi@henryzoo.com"
},
{
"name": "jmm",
"email": "npm-public@jessemccarthy.net"
},
{
"name": "loganfsmyth",
"email": "loganfsmyth@gmail.com"
},
{
"name": "sebmck",
"email": "sebmck@gmail.com"
},
{
"name": "thejameskyle",
"email": "me@thejameskyle.com"
}
],
"name": "babel-plugin-transform-es2015-duplicate-keys",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-es2015-duplicate-keys"
},
"scripts": {},
"version": "6.24.1"
}