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57 lines
1.9 KiB
57 lines
1.9 KiB
2 years ago
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<p align="center">
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<a href="http://gulpjs.com">
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<img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png">
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</a>
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</p>
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# to-through
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[![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url]
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Wrap a ReadableStream in a TransformStream.
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## Usage
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```js
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var from = require('from2');
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var concat = require('concat-stream');
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var toThrough = require('to-through');
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var readable = from([' ', 'hello', ' ', 'world']);
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// Can be used as a Readable or Transform
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var maybeTransform = toThrough(readable);
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from(['hi', ' ', 'there', ','])
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.pipe(maybeTransform)
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.pipe(concat(function(result) {
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// result.toString() === 'hi there, hello world'
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}));
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```
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## API
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### `toThrough(readableStream)`
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Takes a `readableStream` as the only argument and returns a `through2` stream. If the returned stream is piped before `nextTick`, the wrapped `readableStream` will not flow until the upstream is flushed. If the stream is not piped before `nextTick`, it is ended and flushed (acting as a proper readable).
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## License
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MIT
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[downloads-image]: http://img.shields.io/npm/dm/to-through.svg
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[npm-url]: https://npmjs.com/package/to-through
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[npm-image]: http://img.shields.io/npm/v/to-through.svg
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[travis-url]: https://travis-ci.org/gulpjs/to-through
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[travis-image]: http://img.shields.io/travis/gulpjs/to-through.svg?label=travis-ci
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[appveyor-url]: https://ci.appveyor.com/project/gulpjs/to-through
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[appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/to-through.svg?label=appveyor
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[coveralls-url]: https://coveralls.io/r/gulpjs/to-through
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[coveralls-image]: http://img.shields.io/coveralls/gulpjs/to-through/master.svg
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[gitter-url]: https://gitter.im/gulpjs/gulp
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[gitter-image]: https://badges.gitter.im/gulpjs/gulp.png
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