This commit is contained in:
chrosey
2017-09-13 07:52:34 +02:00
parent a1f16c37f4
commit 2340b0226b
24621 changed files with 2912161 additions and 149 deletions
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# copySync(src, dest, [options])
Copy a file or directory. The directory can have contents. Like `cp -r`.
- `src` `<String>`
- `dest` `<String>`
- `options` `<Object>`
- `overwrite` `<boolean>`: overwrite existing file or directory, default is `true`. _Note that the copy operation will silently fail if you set this to `false` and the destination exists._ Use the `errorOnExist` option to change this behavior.
- `errorOnExist` `<boolean>`: when `overwrite` is `false` and the destination exists, throw an error. Default is `false`.
- `dereference` `<boolean>`: dereference symlinks, default is `false`.
- `preserveTimestamps` `<boolean>`: will set last modification and access times to the ones of the original source files, default is `false`.
- `filter` `<Function>`: Function to filter copied files. Return `true` to include, `false` to exclude. This can also be a RegExp, however this is deprecated (See [issue #239](https://github.com/jprichardson/node-fs-extra/issues/239) for background).
## Example:
```js
const fs = require('fs-extra')
// copy file
fs.copySync('/tmp/myfile', '/tmp/mynewfile')
// copy directory, even if it has subdirectories or files
fs.copySync('/tmp/mydir', '/tmp/mynewdir')
```
**Using filter function**
```js
const fs = require('fs-extra')
const filterFunc = (src, dest) => {
// your logic here
// it will be copied if return true
}
fs.copySync('/tmp/mydir', '/tmp/mynewdir', { filter: filterFunc })
```
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# copy(src, dest, [options], callback)
Copy a file or directory. The directory can have contents. Like `cp -r`.
- `src` `<String>`
- `dest` `<String>`
- `options` `<Object>`
- `overwrite` `<boolean>`: overwrite existing file or directory, default is `true`. _Note that the copy operation will silently fail if you set this to `false` and the destination exists._ Use the `errorOnExist` option to change this behavior.
- `errorOnExist` `<boolean>`: when `overwrite` is `false` and the destination exists, throw an error. Default is `false`.
- `dereference` `<boolean>`: dereference symlinks, default is `false`.
- `preserveTimestamps` `<boolean>`: will set last modification and access times to the ones of the original source files, default is `false`.
- `filter` `<Function>`: Function to filter copied files. Return `true` to include, `false` to exclude. This can also be a RegExp, however this is deprecated (See [issue #239](https://github.com/jprichardson/node-fs-extra/issues/239) for background).
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
fs.copy('/tmp/myfile', '/tmp/mynewfile', err => {
if (err) return console.error(err)
console.log('success!')
}) // copies file
fs.copy('/tmp/mydir', '/tmp/mynewdir', err => {
if (err) return console.error(err)
console.log('success!')
}) // copies directory, even if it has subdirectories or files
```
**Using filter function**
```js
const fs = require('fs-extra')
const filterFunc = (src, dest) => {
// your logic here
// it will be copied if return true
}
fs.copy('/tmp/mydir', '/tmp/mynewdir', { filter: filterFunc }, err => {
if (err) return console.error(err)
console.log('success!')
})
```
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# emptyDirSync(dir)
Ensures that a directory is empty. Deletes directory contents if the directory is not empty. If the directory does not exist, it is created. The directory itself is not deleted.
**Alias:** `emptydirSync()`
- `dir` `<String>`
## Example:
```js
const fs = require('fs-extra')
// assume this directory has a lot of files and folders
fs.emptyDirSync('/tmp/some/dir')
```
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# emptyDir(dir, [callback])
Ensures that a directory is empty. Deletes directory contents if the directory is not empty. If the directory does not exist, it is created. The directory itself is not deleted.
**Alias:** `emptydir()`
- `dir` `<String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
// assume this directory has a lot of files and folders
fs.emptyDir('/tmp/some/dir', err => {
if (err) return console.error(err)
console.log('success!')
})
```
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# ensureDirSync(dir)
Ensures that the directory exists. If the directory structure does not exist, it is created. Like `mkdir -p`.
**Aliases:** `mkdirsSync()`, `mkdirpSync()`
- `dir` `<String>`
## Example:
```js
const fs = require('fs-extra')
const dir = '/tmp/this/path/does/not/exist'
fs.ensureDirSync(dir)
// dir has now been created, including the directory it is to be placed in
```
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# ensureDir(dir, callback)
Ensures that the directory exists. If the directory structure does not exist, it is created. Like `mkdir -p`.
**Aliases:** `mkdirs()`, `mkdirp()`
- `dir` `<String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
const dir = '/tmp/this/path/does/not/exist'
fs.ensureDir(dir, err => {
console.log(err) // => null
// dir has now been created, including the directory it is to be placed in
})
```
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# ensureFileSync(file)
Ensures that the file exists. If the file that is requested to be created is in directories that do not exist, these directories are created. If the file already exists, it is **NOT MODIFIED**.
**Alias:** `createFileSync()`
- `file` `<String>`
## Example:
```js
const fs = require('fs-extra')
const file = '/tmp/this/path/does/not/exist/file.txt'
fs.ensureFileSync(file)
// file has now been created, including the directory it is to be placed in
```
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# ensureFile(file, callback)
Ensures that the file exists. If the file that is requested to be created is in directories that do not exist, these directories are created. If the file already exists, it is **NOT MODIFIED**.
**Alias:** `createFile()`
- `file` `<String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
const file = '/tmp/this/path/does/not/exist/file.txt'
fs.ensureFile(file, err => {
console.log(err) // => null
// file has now been created, including the directory it is to be placed in
})
```
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# ensureLinkSync(srcpath, dstpath)
Ensures that the link exists. If the directory structure does not exist, it is created.
- `srcpath` `<String>`
- `dstpath` `<String>`
## Example:
```js
const fs = require('fs-extra')
const srcpath = '/tmp/file.txt'
const dstpath = '/tmp/this/path/does/not/exist/file.txt'
fs.ensureLinkSync(srcpath, dstpath)
// link has now been created, including the directory it is to be placed in
```
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# ensureLink(srcpath, dstpath, callback)
Ensures that the link exists. If the directory structure does not exist, it is created.
- `srcpath` `<String>`
- `dstpath` `<String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
const srcpath = '/tmp/file.txt'
const dstpath = '/tmp/this/path/does/not/exist/file.txt'
fs.ensureLink(srcpath, dstpath, err => {
console.log(err) // => null
// link has now been created, including the directory it is to be placed in
})
```
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# ensureSymlinkSync(srcpath, dstpath, [type])
Ensures that the symlink exists. If the directory structure does not exist, it is created.
- `srcpath` `<String>`
- `dstpath` `<String>`
- `type` `<String>`
## Example:
```js
const fs = require('fs-extra')
const srcpath = '/tmp/file.txt'
const dstpath = '/tmp/this/path/does/not/exist/file.txt'
fs.ensureSymlinkSync(srcpath, dstpath)
// symlink has now been created, including the directory it is to be placed in
```
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# ensureSymlink(srcpath, dstpath, [type], callback)
Ensures that the symlink exists. If the directory structure does not exist, it is created.
- `srcpath` `<String>`
- `dstpath` `<String>`
- `type` `<String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
const srcpath = '/tmp/file.txt'
const dstpath = '/tmp/this/path/does/not/exist/file.txt'
fs.ensureSymlink(srcpath, dstpath, err => {
console.log(err) // => null
// symlink has now been created, including the directory it is to be placed in
})
```
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# moveSync(src, dest, [options])
Moves a file or directory, even across devices.
- `src` `<String>`
- `dest` `<String>`
- `options` `<Object>`
- `overwrite` `<boolean>`: overwrite existing file or directory, default is `false`.
## Example:
```js
const fs = require('fs-extra')
fs.moveSync('/tmp/somefile', '/tmp/does/not/exist/yet/somefile')
```
**Using `overwrite` option**
```js
const fs = require('fs-extra')
fs.moveSync('/tmp/somedir', '/tmp/may/already/existed/somedir', { overwrite: true })
```
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# move(src, dest, [options], callback)
Moves a file or directory, even across devices.
- `src` `<String>`
- `dest` `<String>`
- `options` `<Object>`
- `overwrite` `<boolean>`: overwrite existing file or directory, default is `false`.
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
fs.move('/tmp/somefile', '/tmp/does/not/exist/yet/somefile', err => {
if (err) return console.error(err)
console.log('success!')
})
```
**Using `overwrite` option**
```js
const fs = require('fs-extra')
fs.move('/tmp/somedir', '/tmp/may/already/existed/somedir', { overwrite: true }, err => {
if (err) return console.error(err)
console.log('success!')
})
```
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# outputFileSync(file, data, [options])
Almost the same as `writeFileSync` (i.e. it [overwrites](http://pages.citebite.com/v2o5n8l2f5reb)), except that if the parent directory does not exist, it's created. `file` must be a file path (a buffer or a file descriptor is not allowed). `options` are what you'd pass to [`fs.writeFileSync()`](https://nodejs.org/api/fs.html#fs_fs_writefilesync_file_data_options).
- `file` `<String>`
- `data` `<String> | <Buffer> | <Uint8Array>`
- `options` `<Object> | <String>`
## Example:
```js
const fs = require('fs-extra')
const file = '/tmp/this/path/does/not/exist/file.txt'
fs.outputFileSync(file, 'hello!')
const data = fs.readFileSync(file, 'utf8')
console.log(data) // => hello!
```
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# outputFile(file, data, [options], callback)
Almost the same as `writeFile` (i.e. it [overwrites](http://pages.citebite.com/v2o5n8l2f5reb)), except that if the parent directory does not exist, it's created. `file` must be a file path (a buffer or a file descriptor is not allowed). `options` are what you'd pass to [`fs.writeFile()`](https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback).
- `file` `<String>`
- `data` `<String> | <Buffer> | <Uint8Array>`
- `options` `<Object> | <String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
const file = '/tmp/this/path/does/not/exist/file.txt'
fs.outputFile(file, 'hello!', err => {
console.log(err) // => null
fs.readFile(file, 'utf8', (err, data) => {
console.log(data) // => hello!
})
})
```
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# outputJsonSync(file, object, [options])
Almost the same as [`writeJsonSync`](writeJson-sync.md), except that if the directory does not exist, it's created.
`options` are what you'd pass to [`jsonFile.writeFileSync()`](https://github.com/jprichardson/node-jsonfile#writefilesyncfilename-obj-options).
**Alias:** `outputJSONSync()`
- `file` `<String>`
- `object` `<Object>`
- `options` `<Object>`
## Example:
```js
const fs = require('fs-extra')
const file = '/tmp/this/path/does/not/exist/file.json'
fs.outputJsonSync(file, {name: 'JP'})
const data = fs.readJsonSync(file)
console.log(data.name) // => JP
```
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# outputJson(file, object, [options], callback)
Almost the same as [`writeJson`](writeJson.md), except that if the directory does not exist, it's created.
`options` are what you'd pass to [`jsonFile.writeFile()`](https://github.com/jprichardson/node-jsonfile#writefilefilename-options-callback).
**Alias:** `outputJSON()`
- `file` `<String>`
- `object` `<Object>`
- `options` `<Object>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
const file = '/tmp/this/path/does/not/exist/file.json'
fs.outputJson(file, {name: 'JP'}, err => {
console.log(err) // => null
fs.readJson(file, (err, data) => {
console.log(data.name) // => JP
})
})
```
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# readJsonSync(file, [options])
Reads a JSON file and then parses it into an object. `options` are the same
that you'd pass to [`jsonFile.readFileSync`](https://github.com/jprichardson/node-jsonfile#readfilesyncfilename-options).
**Alias:** `readJSONSync()`
- `file` `<String>`
- `options` `<Object>`
## Example:
```js
const fs = require('fs-extra')
const packageObj = fs.readJsonSync('./package.json')
console.log(packageObj.version) // => 2.0.0
```
---
`readJsonSync()` can take a `throws` option set to `false` and it won't throw if the JSON is invalid. Example:
```js
const fs = require('fs-extra')
const file = '/tmp/some-invalid.json'
const data = '{not valid JSON'
fs.writeFileSync(file, data)
const obj = fs.readJsonSync(file, { throws: false })
console.log(obj) // => null
```
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# readJson(file, [options], callback)
Reads a JSON file and then parses it into an object. `options` are the same
that you'd pass to [`jsonFile.readFile`](https://github.com/jprichardson/node-jsonfile#readfilefilename-options-callback).
**Alias:** `readJSON()`
- `file` `<String>`
- `options` `<Object>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
fs.readJson('./package.json', (err, packageObj) => {
if (err) console.error(err)
console.log(packageObj.version) // => 0.1.3
})
```
---
`readJson()` can take a `throws` option set to `false` and it won't throw if the JSON is invalid. Example:
```js
const fs = require('fs-extra')
const file = '/tmp/some-invalid.json'
const data = '{not valid JSON'
fs.writeFileSync(file, data)
fs.readJson(file, { throws: false }, (err, obj) => {
if (err) console.error(err)
console.log(obj) // => null
})
```
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# removeSync(path)
Removes a file or directory. The directory can have contents. Like `rm -rf`.
- `path` `<String>`
## Example:
```js
const fs = require('fs-extra')
// remove file
fs.removeSync('/tmp/myfile')
fs.removeSync('/home/jprichardson') // I just deleted my entire HOME directory.
```
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# remove(path, callback)
Removes a file or directory. The directory can have contents. Like `rm -rf`.
- `path` `<String>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
// remove file
fs.remove('/tmp/myfile', err => {
if (err) return console.error(err)
console.log('success!')
})
fs.remove('/home/jprichardson', err => {
if (err) return console.error(err)
console.log('success!') // I just deleted my entire HOME directory.
})
```
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# writeJsonSync(file, object, [options])
Writes an object to a JSON file. `options` are the same that
you'd pass to [`jsonFile.writeFileSync()`](https://github.com/jprichardson/node-jsonfile#writefilesyncfilename-obj-options).
**Alias:** `writeJSONSync()`
- `file` `<String>`
- `object` `<Object>`
- `options` `<Object>`
## Example:
```js
const fs = require('fs-extra')
fs.writeJsonSync('./package.json', {name: 'fs-extra'})
```
---
**See also:** [`outputJsonSync()`](outputJson-sync.md)
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# writeJson(file, object, [options], callback)
Writes an object to a JSON file. `options` are the same that
you'd pass to [`jsonFile.writeFile()`](https://github.com/jprichardson/node-jsonfile#writefilefilename-options-callback).
**Alias:** `writeJSON()`
- `file` `<String>`
- `object` `<Object>`
- `options` `<Object>`
- `callback` `<Function>`
## Example:
```js
const fs = require('fs-extra')
fs.writeJson('./package.json', {name: 'fs-extra'}, err => {
if (err) return console.error(err)
console.log('success!')
})
```
---
**See also:** [`outputJson()`](outputJson.md)