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node_modules/sleep-promise/README.md
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# sleep-promise [![License][license-image]][license-url] [![NPM version][npm-image]][npm-url] [![NPM downloads][npm-downloads-image]][npm-downloads-url] [![Build][build-image]][build-url] [![Coverage][coverage-image]][coverage-url]
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_sleep-promise_ resolves a promise after a specified delay.
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## Installation
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### node.js
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npm install sleep-promise
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## Usage async / await
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```javascript
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import sleep from 'sleep-promise';
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(async () => {
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await sleep(2000);
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console.log('2 seconds later …');
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})();
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```
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## Usage ES5
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```javascript
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var sleep = require('sleep-promise');
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sleep(2000).then(function() {
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console.log('2 seconds later …');
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});
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```
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## Usage in a promise chain
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```javascript
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import sleep from 'sleep-promise';
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let trace = value => {
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console.log(value);
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return value;
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};
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sleep(2000)
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.then(() => 'hello')
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.then(trace)
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.then(sleep(1000))
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.then(value => value + ' world')
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.then(trace)
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.then(sleep(500))
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.then(value => value + '!')
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.then(trace);
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// [2 seconds sleep]
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// hello
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// [1 second sleep]
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// hello world
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// [500 ms sleep]
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// hello world!
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```
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## Usage in a test file that mocks setTimeout
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```javascript
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import sinon from 'sinon';
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import sleep from 'sleep-promise';
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const clock = sinon.useFakeTimers();
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(async () => {
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// 2 seconds faked by sinon
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const sleepPromise = sleep(2000);
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clock.tick(2000);
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await sleepPromise;
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console.log('instant');
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// Caches global setTimeout before sinon replaced it
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const sleepPromise2 = sleep(2000, { useCachedSetTimeout: true });
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clock.tick(2000);
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await sleepPromise2;
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console.log('2 seconds later');
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})();
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```
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## License
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[MIT](LICENSE.md)
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[license-image]: https://img.shields.io/github/license/brummelte/sleep-promise.svg
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[license-url]: https://github.com/brummelte/sleep-promise/blob/master/LICENSE.md
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[npm-image]: https://img.shields.io/npm/v/sleep-promise.svg
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[npm-url]: https://www.npmjs.com/package/sleep-promise
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[npm-downloads-image]: https://img.shields.io/npm/dm/sleep-promise.svg
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[npm-downloads-url]: https://www.npmjs.com/package/sleep-promise
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[build-image]: https://img.shields.io/circleci/project/github/brummelte/sleep-promise/master.svg
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[build-url]: https://circleci.com/gh/brummelte/sleep-promise
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[coverage-image]: https://img.shields.io/coveralls/github/brummelte/sleep-promise/master.svg
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[coverage-url]: https://coveralls.io/github/brummelte/sleep-promise?branch=master
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