# to-through [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][ci-image]][ci-url] [![Coveralls Status][coveralls-image]][coveralls-url] Wrap a `Readable` stream in a `Transform` stream. ## Usage ```js var { Readable } = require('streamx'); var concat = require('concat-stream'); var toThrough = require('to-through'); var readable = Readable.from([' ', 'hello', ' ', 'world']); // Can be used as a Readable or Transform var maybeTransform = toThrough(readable); Readable.from(['hi', ' ', 'there', ',']) .pipe(maybeTransform) .pipe( concat(function (result) { // result === 'hi there, hello world' }) ); ``` ## API ### `toThrough(readableStream)` Takes a `Readable` stream as the only argument and returns a `Transform` stream wrapper. Any data piped into the `Transform` stream is piped passed along before any data from the wrapped `Readable` is injected into the stream. ## License MIT [downloads-image]: https://img.shields.io/npm/dm/to-through.svg?style=flat-square [npm-url]: https://www.npmjs.com/package/to-through [npm-image]: https://img.shields.io/npm/v/to-through.svg?style=flat-square [ci-url]: https://github.com/gulpjs/to-through/actions?query=workflow:dev [ci-image]: https://img.shields.io/github/workflow/status/gulpjs/to-through/dev?style=flat-square [coveralls-url]: https://coveralls.io/r/gulpjs/to-through [coveralls-image]: https://img.shields.io/coveralls/gulpjs/to-through/master.svg?style=flat-square