mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-25 09:55:15 +00:00
145 lines
3.7 KiB
Markdown
145 lines
3.7 KiB
Markdown
# merge2
|
|
|
|
Merge multiple streams into one stream in sequence or parallel.
|
|
|
|
[![NPM version][npm-image]][npm-url]
|
|
[![Build Status][travis-image]][travis-url]
|
|
[![Downloads][downloads-image]][downloads-url]
|
|
|
|
## Install
|
|
|
|
Install with [npm](https://npmjs.org/package/merge2)
|
|
|
|
```sh
|
|
npm install merge2
|
|
```
|
|
|
|
## Usage
|
|
|
|
```js
|
|
const gulp = require('gulp')
|
|
const merge2 = require('merge2')
|
|
const concat = require('gulp-concat')
|
|
const minifyHtml = require('gulp-minify-html')
|
|
const ngtemplate = require('gulp-ngtemplate')
|
|
|
|
gulp.task('app-js', function () {
|
|
return merge2(
|
|
gulp.src('static/src/tpl/*.html')
|
|
.pipe(minifyHtml({empty: true}))
|
|
.pipe(ngtemplate({
|
|
module: 'genTemplates',
|
|
standalone: true
|
|
})
|
|
), gulp.src([
|
|
'static/src/js/app.js',
|
|
'static/src/js/locale_zh-cn.js',
|
|
'static/src/js/router.js',
|
|
'static/src/js/tools.js',
|
|
'static/src/js/services.js',
|
|
'static/src/js/filters.js',
|
|
'static/src/js/directives.js',
|
|
'static/src/js/controllers.js'
|
|
])
|
|
)
|
|
.pipe(concat('app.js'))
|
|
.pipe(gulp.dest('static/dist/js/'))
|
|
})
|
|
```
|
|
|
|
```js
|
|
const stream = merge2([stream1, stream2], stream3, {end: false})
|
|
//...
|
|
stream.add(stream4, stream5)
|
|
//..
|
|
stream.end()
|
|
```
|
|
|
|
```js
|
|
// equal to merge2([stream1, stream2], stream3)
|
|
const stream = merge2()
|
|
stream.add([stream1, stream2])
|
|
stream.add(stream3)
|
|
```
|
|
|
|
```js
|
|
// merge order:
|
|
// 1. merge `stream1`;
|
|
// 2. merge `stream2` and `stream3` in parallel after `stream1` merged;
|
|
// 3. merge 'stream4' after `stream2` and `stream3` merged;
|
|
const stream = merge2(stream1, [stream2, stream3], stream4)
|
|
|
|
// merge order:
|
|
// 1. merge `stream5` and `stream6` in parallel after `stream4` merged;
|
|
// 2. merge 'stream7' after `stream5` and `stream6` merged;
|
|
stream.add([stream5, stream6], stream7)
|
|
```
|
|
|
|
```js
|
|
// nest merge
|
|
// equal to merge2(stream1, stream2, stream6, stream3, [stream4, stream5]);
|
|
const streamA = merge2(stream1, stream2)
|
|
const streamB = merge2(stream3, [stream4, stream5])
|
|
const stream = merge2(streamA, streamB)
|
|
streamA.add(stream6)
|
|
```
|
|
|
|
## API
|
|
|
|
```js
|
|
const merge2 = require('merge2')
|
|
```
|
|
|
|
### merge2()
|
|
|
|
### merge2(options)
|
|
|
|
### merge2(stream1, stream2, ..., streamN)
|
|
|
|
### merge2(stream1, stream2, ..., streamN, options)
|
|
|
|
### merge2(stream1, [stream2, stream3, ...], streamN, options)
|
|
|
|
return a duplex stream (mergedStream). streams in array will be merged in parallel.
|
|
|
|
### mergedStream.add(stream)
|
|
|
|
### mergedStream.add(stream1, [stream2, stream3, ...], ...)
|
|
|
|
return the mergedStream.
|
|
|
|
### mergedStream.on('queueDrain', function() {})
|
|
|
|
It will emit 'queueDrain' when all streams merged. If you set `end === false` in options, this event give you a notice that should add more streams to merge or end the mergedStream.
|
|
|
|
#### stream
|
|
|
|
*option*
|
|
Type: `Readable` or `Duplex` or `Transform` stream.
|
|
|
|
#### options
|
|
|
|
*option*
|
|
Type: `Object`.
|
|
|
|
* **end** - `Boolean` - if `end === false` then mergedStream will not be auto ended, you should end by yourself. **Default:** `undefined`
|
|
|
|
* **pipeError** - `Boolean` - if `pipeError === true` then mergedStream will emit `error` event from source streams. **Default:** `undefined`
|
|
|
|
* **objectMode** - `Boolean` . **Default:** `true`
|
|
|
|
`objectMode` and other options(`highWaterMark`, `defaultEncoding` ...) is same as Node.js `Stream`.
|
|
|
|
## License
|
|
|
|
MIT © [Teambition](https://www.teambition.com)
|
|
|
|
[npm-url]: https://npmjs.org/package/merge2
|
|
[npm-image]: http://img.shields.io/npm/v/merge2.svg
|
|
|
|
[travis-url]: https://travis-ci.org/teambition/merge2
|
|
[travis-image]: http://img.shields.io/travis/teambition/merge2.svg
|
|
|
|
[downloads-url]: https://npmjs.org/package/merge2
|
|
[downloads-image]: http://img.shields.io/npm/dm/merge2.svg?style=flat-square
|