HOC for React and React Native providing versions of setTimeout etc. that cancels when unmounted. 

plougsgaard

react-timeout

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  "description": "HOC for React and React Native providing versions of setTimeout etc. that cancels when unmounted.",

  "homepage": "https://github.com/plougsgaard/react-timeout",

    "url": "https://github.com/plougsgaard/react-timeout.git"

    "url": "https://github.com/plougsgaard/react-timeout/issues"

    "test": "mocha --compilers js:babel-core/register --require ./test/helper.js 'test/**/*.@(js|jsx)'"

[![Greenkeeper badge](https://badges.greenkeeper.io/plougsgaard/react-timeout.svg)](https://greenkeeper.io/) [![travis build](https://img.shields.io/travis/plougsgaard/react-timeout.svg)](https://travis-ci.org/plougsgaard/react-timeout) [![npm version](https://badge.fury.io/js/react-timeout.svg)](https://badge.fury.io/js/react-timeout)

> Warning: setState(...): Can only update a mounted or mounting component. This usually means you called setState() on an unmounted component. This is a no-op.

> Warning: Can only update a mounted or mounting component. This usually means you called setState, replaceState, or forceUpdate on an unmounted component. This is a no-op.

Seeing a lot of the above? If so this might be useful!

React Timeout is a higher order component for [React](https://github.com/facebook/react) and [React Native](https://github.com/facebook/react-native) providing the wrapped component with **safe** versions of

------------------------|------------------------

`setInterval`           | `clearInterval`

`setImmediate`          | `clearImmediate`

`requestAnimationFrame` | `cancelAnimationFrame`

When the wrapped component is *unmounted*, any lingering timers will be canceled automatically.

The component simulates a light switch. It has a state `on` which is `true` or `false`. When the button is clicked it waits `5000ms` before switching the `on` state.

class LightSwitchExample extends React.Component {

    this.setState({ on: !this.state.on })

    this.props.setTimeout(this.toggle, 5000) // call the `toggle` function after 5000ms

        <button onClick={this.handleClick}>Click me!</button>

export default ReactTimeout(LightSwitchExample)

If the component is unmounted before the `5000ms` is up, the timeout is canceled by `ReactTimeout`.

Had we just called the regular old `setTimeout`, the callback `toggle` would still fire and try setting the state of an unmounted component.

      onClick={() => props.setTimeout(..)}>Click me!</button>

        onClick={() => this.props.setTimeout(..)}>Click me!</button>

If you need access to the component wrapped by `ReactTimeout`, use `component.getWrappedInstance()`.

## [react-timer-mixin](https://github.com/reactjs/react-timer-mixin)

The timer mixin recommended by the  [react-native](https://github.com/facebook/react-native) docs.

If you're using a version of React Native that is `0.17` or below you have to import from the `/native` namespace.

import ReactTimeout from 'react-timeout/native' // only for react-native 0.17 or below

var createReactClass = require('create-react-class')

var objectAssign = require('object-assign')

var hoistNonReactStatics = require('hoist-non-react-statics')

var createReactTimeout = function (React) {

  var GLOBAL = typeof window === 'undefined' ? global : window

  var setter = function (_setter, _clearer, array) {

  var clearer = function (_clearer, array) {

        var index = this[array].indexOf(id)

  var _timeouts = '_ReactTimeout_timeouts'

  var _clearTimeout = clearer(GLOBAL.clearTimeout, _timeouts)

  var _setTimeout = setter(GLOBAL.setTimeout, _clearTimeout, _timeouts)

  var _intervals = '_ReactTimeout_intervals'

  var _clearInterval = clearer(GLOBAL.clearInterval, _intervals)

  var _setInterval = setter(GLOBAL.setInterval, function () {}, _intervals)

  var _immediates = '_ReactTimeout_immediates'

  var _clearImmediate = clearer(GLOBAL.clearImmediate, _immediates)

  var _setImmediate = setter(GLOBAL.setImmediate, _clearImmediate, _immediates)

  var _cancelAnimationFrame = clearer(GLOBAL.cancelAnimationFrame, _rafs)

  var _requestAnimationFrame = setter(GLOBAL.requestAnimationFrame, _cancelAnimationFrame, _rafs)

    return (!a || typeof a.slice !== 'function') ? [] : a.slice(0)

  var ReactTimeout = function (SourceComponent) {

      requestAnimationFrame: _requestAnimationFrame,

      cancelAnimationFrame: _cancelAnimationFrame,

      componentWillUnmount: function () {

        cloneArray(this[_timeouts]).forEach(this.clearTimeout)

        cloneArray(this[_intervals]).forEach(this.clearInterval)

        cloneArray(this[_immediates]).forEach(this.clearImmediate)

        cloneArray(this[_rafs]).forEach(this.cancelAnimationFrame)

              ref: (component) => { this.wrappedInstance = component; },

              setTimeout: this.setTimeout,

              clearTimeout: this.clearTimeout,

              setInterval: this.setInterval,

              clearInterval: this.clearInterval,

              setImmediate: this.setImmediate,

              clearImmediate: this.clearImmediate,

              requestAnimationFrame: this.requestAnimationFrame,

              cancelAnimationFrame: this.cancelAnimationFrame

    return hoistNonReactStatics(Component, SourceComponent)

		{
		"name": "react-timeout",
		"version": "1.0.1",
		"version": "1.1.0",
		"description": "HOC for React and React Native providing versions of setTimeout etc. that cancels when unmounted.",
		@@ -29,2 +29,3 @@ "homepage": "https://github.com/plougsgaard/react-timeout",
		"create-react-class": "^15.5.2",
		"hoist-non-react-statics": "^2.3.1",
		"object-assign": "^4.0.1"
		@@ -38,7 +39,7 @@ },
		"babel-preset-stage-1": "^6.1.18",
		"chai": "^3.4.1",
		"chai": "^4.0.0",
		"chai-immutable": "^1.5.3",
		"immutable": "^3.8.0",
		"jsdom": "^10.1.0",
		"mocha": "^3.2.0",
		"jsdom": "^11.0.0",
		"mocha": "^5.0.0",
		"react": "^15.4.2",
		@@ -45,0 +46,0 @@ "react-dom": "^15.4.2"

		@@ -60,2 +60,3 @@ # React Timeout
		}
		export default ReactTimeout(LightSwitchExample)
		```
		@@ -93,2 +94,5 @@

		## To access the wrapped instance
		If you need access to the component wrapped by `ReactTimeout`, use `component.getWrappedInstance()`.

		# Something similar
		@@ -95,0 +99,0 @@

		var createReactClass = require('create-react-class')
		var objectAssign = require('object-assign')
		var hoistNonReactStatics = require('hoist-non-react-statics')

		@@ -56,3 +57,3 @@ var createReactTimeout = function (React) {
		var ReactTimeout = function (SourceComponent) {
		return createReactClass({
		var Component = createReactClass({
		displayName: 'ReactTimeout',
		@@ -79,2 +80,6 @@

		getWrappedInstance() {
		return this.wrappedInstance;
		},

		render: function () {
		@@ -87,2 +92,3 @@ return React.createElement(
		{
		ref: (component) => { this.wrappedInstance = component; },
		setTimeout: this.setTimeout,
		@@ -102,2 +108,3 @@ clearTimeout: this.clearTimeout,
		})
		return hoistNonReactStatics(Component, SourceComponent)
		}
		@@ -104,0 +111,0 @@

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