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Arous","email":"arous.hasan@gmail.com"},"license":"MIT","homepage":"https://github.com/etabits/l#readme","keywords":["sync","async","promise","stream","flow","control"],"repository":{"url":"git+https://github.com/etabits/l.git","type":"git"},"description":"Mix Async/Sync code with Promises and Streams in a reusable unified line","maintainers":[{"name":"aularon","email":"arous.hasan@gmail.com"}],"readme":"# L\n> Mix Async/Sync code with Promises and Streams in a reusable unified line\n\n[![Build Status](https://travis-ci.org/etabits/l.svg?branch=master)](https://travis-ci.org/etabits/l)\n[![Coverage Status](https://coveralls.io/repos/github/etabits/l/badge.svg?branch=master)](https://coveralls.io/github/etabits/l?branch=master)\n\nYou have multiple functions, some of them are **async**, others are **promise**-based, and you have some **stream** transformers, and you want to plug everything together: This module **takes an array of functions/streams and gives you a single function**, that can be used with callback, or as a promise. It takes care of piping consecutive streams, buffering them before passing them to the next function... etc.\n\n## Installation\n```sh\nnpm install --save l\n```\n\n## Features\n* A segment can be sync, async with a callback, can return a promise, or can define a stream\n* Consecutive streams are automatically piped, only buffered when next segment is not a stream\n* You can return a stream, and it will be automatically buffered/piped\n\n## Usage Example\n```js\nconst l = require('l');\n\nvar calc = l([\n (val) => val * 5, // sync\n { // Split\n add: (val) => Promise.resolve(val + 2), // promise\n mul: (val, done) => process.nextTick(() => done(null, val * 7)) // async\n },\n (composed) => composed.add + composed.mul // Join\n])\n\ncalc(1, function (error, answer) { // with a callback\n require('assert').strictEqual(answer, 42)\n})\n\ncalc(Math.PI).then(result => { // as a promise\n console.log(result) // 127.66370614359172\n})\n```\nFor a more complete example that involves streams, please check [examples](https://github.com/etabits/l/tree/master/examples) and [tests](https://github.com/etabits/l/tree/master/test).\n\n## Debugging\nTo enable debugging:\n```sh\nDEBUG=line node ./examples/npm-module-github-stats.js penguin\n```\n\n```ruby\n>executing on: penguin (5 segments)\n 0