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70 lines
2.5 KiB
70 lines
2.5 KiB
2 years ago
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[![Build status][nix-build-image]][nix-build-url]
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[![Windows status][win-build-image]][win-build-url]
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![Transpilation status][transpilation-image]
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[![npm version][npm-image]][npm-url]
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# timers-ext
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## Timers extensions
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### Installation
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$ npm install timers-ext
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To port it to Browser or any other (non CJS) environment, use your favorite CJS bundler. No favorite yet? Try: [Browserify](http://browserify.org/), [Webmake](https://github.com/medikoo/modules-webmake) or [Webpack](http://webpack.github.io/)
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### API
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#### MAX*TIMEOUT *(timers-ext/max-timeout)\_
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Maximum possible timeout value in milliseconds. It equals to maximum positive value for 32bit signed integer, so _2³¹ (2147483647)_, which makes it around 24.9 days
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#### delay(fn[, timeout]) _(timers-ext/delay)_
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Returns function which when invoked will call _fn_ function after specified
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_timeout_. If _timeout_ is not provided [nextTick](https://github.com/medikoo/next-tick/#next-tick) propagation is used.
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#### once(fn[, timeout]) _(timers-ext/once)_
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Makes sure to execute _fn_ function only once after a defined interval of time (debounce). If _timeout_ is not provided [nextTick](https://github.com/medikoo/next-tick/#next-tick) propagation is used.
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```javascript
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var nextTick = require("next-tick");
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var logFoo = function() {
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console.log("foo");
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};
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var logFooOnce = require("timers-ext/once")(logFoo);
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logFooOnce();
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logFooOnce(); // ignored, logFoo will be logged only once
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logFooOnce(); // ignored
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nextTick(function() {
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logFooOnce(); // Invokes another log (as tick passed)
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logFooOnce(); // ignored
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logFooOnce(); // ignored
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});
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```
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#### validTimeout(timeout) _(timers-ext/valid-timeout)_
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Validates timeout value.
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For `NaN` resolved _timeout_ `0` is returned.
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If _timeout_ resolves to a number:
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- for _timeout < 0_ `0` is returned
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- for _0 >= timeout <= [MAX_TIMEOUT](#max_timeout-timers-extmax-timeout)_, `timeout` value is returned
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- for _timeout > [MAX_TIMEOUT](#max_timeout-timers-extmax-timeout)_ exception is thrown
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### Tests
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$ npm test
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[nix-build-image]: https://semaphoreci.com/api/v1/medikoo-org/timers-ext/branches/master/shields_badge.svg
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[nix-build-url]: https://semaphoreci.com/medikoo-org/timers-ext
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[win-build-image]: https://ci.appveyor.com/api/projects/status/2i5nerowov2ho3o9?svg=true
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[win-build-url]: https://ci.appveyor.com/project/medikoo/timers-ext
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[transpilation-image]: https://img.shields.io/badge/transpilation-free-brightgreen.svg
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[npm-image]: https://img.shields.io/npm/v/timers-ext.svg
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[npm-url]: https://www.npmjs.com/package/timers-ext
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