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178 lines
7.1 KiB
178 lines
7.1 KiB
# write [](https://www.npmjs.com/package/write) [](https://npmjs.org/package/write) [](https://npmjs.org/package/write) [](https://travis-ci.org/jonschlinkert/write)
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> Write data to a file, replacing the file if it already exists and creating any intermediate directories if they don't already exist. Thin wrapper around node's native fs methods.
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## Install
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Install with [npm](https://www.npmjs.com/):
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```sh
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$ npm install --save write
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```
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## Usage
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```js
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var writeFile = require('write');
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```
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## API
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### [writeFile](index.js#L40)
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Asynchronously writes data to a file, replacing the file if it already exists and creating any intermediate directories if they don't already exist. Data can be a string or a buffer. Returns a promise if a callback function is not passed.
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**Params**
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* `filepath` **{string|Buffer|integer}**: filepath or file descriptor.
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* `data` **{string|Buffer|Uint8Array}**: String to write to disk.
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* `options` **{object}**: Options to pass to [fs.writeFile](https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback) and/or [mkdirp](https://github.com/substack/node-mkdirp)
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* `callback` **{Function}**: (optional) If no callback is provided, a promise is returned.
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**Example**
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```js
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var writeFile = require('write');
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writeFile('foo.txt', 'This is content...', function(err) {
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if (err) console.log(err);
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});
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// promise
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writeFile('foo.txt', 'This is content...')
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.then(function() {
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// do stuff
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});
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```
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### [.promise](index.js#L82)
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The promise version of [writeFile](#writefile). Returns a promise.
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**Params**
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* `filepath` **{string|Buffer|integer}**: filepath or file descriptor.
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* `val` **{string|Buffer|Uint8Array}**: String or buffer to write to disk.
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* `options` **{object}**: Options to pass to [fs.writeFile](https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback) and/or [mkdirp](https://github.com/substack/node-mkdirp)
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* `returns` **{Promise}**
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**Example**
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```js
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var writeFile = require('write');
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writeFile.promise('foo.txt', 'This is content...')
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.then(function() {
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// do stuff
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});
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```
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### [.sync](index.js#L120)
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The synchronous version of [writeFile](#writefile). Returns undefined.
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**Params**
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* `filepath` **{string|Buffer|integer}**: filepath or file descriptor.
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* `data` **{string|Buffer|Uint8Array}**: String or buffer to write to disk.
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* `options` **{object}**: Options to pass to [fs.writeFileSync](https://nodejs.org/api/fs.html#fs_fs_writefilesync_file_data_options) and/or [mkdirp](https://github.com/substack/node-mkdirp)
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* `returns` **{undefined}**
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**Example**
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```js
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var writeFile = require('write');
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writeFile.sync('foo.txt', 'This is content...');
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```
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### [.stream](index.js#L151)
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Uses `fs.createWriteStream` to write data to a file, replacing the file if it already exists and creating any intermediate directories if they don't already exist. Data can be a string or a buffer. Returns a new [WriteStream](https://nodejs.org/api/fs.html#fs_class_fs_writestream) object.
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**Params**
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* `filepath` **{string|Buffer|integer}**: filepath or file descriptor.
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* `options` **{object}**: Options to pass to [mkdirp](https://github.com/substack/node-mkdirp) and [fs.createWriteStream](https://nodejs.org/api/fs.html#fs_fs_createwritestream_path_options)
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* `returns` **{Stream}**: Returns a new [WriteStream](https://nodejs.org/api/fs.html#fs_class_fs_writestream) object. (See [Writable Stream](https://nodejs.org/api/stream.html#stream_class_stream_writable)).
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**Example**
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```js
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var fs = require('fs');
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var writeFile = require('write');
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fs.createReadStream('README.md')
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.pipe(writeFile.stream('a/b/c/other-file.md'))
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.on('close', function() {
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// do stuff
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});
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```
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## Release history
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### v1.0.2 - 2017-07-11
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* improved documentation
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### v1.0.0 - 2017-07-09
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**Added**
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* [promise support](#promise)
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**Changed**
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* The main export will now return a promise if no callback is passed
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## About
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### Related projects
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* [delete](https://www.npmjs.com/package/delete): Delete files and folders and any intermediate directories if they exist (sync and async). | [homepage](https://github.com/jonschlinkert/delete "Delete files and folders and any intermediate directories if they exist (sync and async).")
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* [read-data](https://www.npmjs.com/package/read-data): Read JSON or YAML files. | [homepage](https://github.com/jonschlinkert/read-data "Read JSON or YAML files.")
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* [read-yaml](https://www.npmjs.com/package/read-yaml): Very thin wrapper around js-yaml for directly reading in YAML files. | [homepage](https://github.com/jonschlinkert/read-yaml "Very thin wrapper around js-yaml for directly reading in YAML files.")
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* [write-data](https://www.npmjs.com/package/write-data): Write a YAML or JSON file to disk. Automatically detects the format to write based… [more](https://github.com/jonschlinkert/write-data) | [homepage](https://github.com/jonschlinkert/write-data "Write a YAML or JSON file to disk. Automatically detects the format to write based on extension. Or pass `ext` on the options.")
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* [write-json](https://www.npmjs.com/package/write-json): Write a JSON file to disk, also creates intermediate directories in the destination path if… [more](https://github.com/jonschlinkert/write-json) | [homepage](https://github.com/jonschlinkert/write-json "Write a JSON file to disk, also creates intermediate directories in the destination path if they don't already exist.")
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* [write-yaml](https://www.npmjs.com/package/write-yaml): Write YAML. Converts JSON to YAML writes it to the specified file. | [homepage](https://github.com/jonschlinkert/write-yaml "Write YAML. Converts JSON to YAML writes it to the specified file.")
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### Contributing
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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### Contributors
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| **Commits** | **Contributor** |
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| --- | --- |
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| 33 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 1 | [tunnckoCore](https://github.com/tunnckoCore) |
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### Building docs
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_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
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To generate the readme, run the following command:
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```sh
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$ npm install -g verbose/verb#dev verb-generate-readme && verb
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```
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### Running tests
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Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
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```sh
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$ npm install && npm test
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```
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### Author
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**Jon Schlinkert**
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* [github/jonschlinkert](https://github.com/jonschlinkert)
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* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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### License
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Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
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Released under the [MIT License](LICENSE).
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***
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_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on July 11, 2017._ |