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react-timeout
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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 and React Native providing the wrapped component with safe versions of
Set | Clear |
---|---|
setTimeout | clearTimeout |
setInterval | clearInterval |
setImmediate | clearImmediate |
requestAnimationFrame | cancelAnimationFrame |
When the wrapped component is unmounted, any lingering timers will be canceled automatically.
npm install --save react-timeout
React | React Timeout |
---|---|
16.3 + | 2+ |
<16.3 | 1.x |
import ReactTimeout from 'react-timeout'
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.
import React from 'react'
import ReactTimeout from 'react-timeout'
class LightSwitchExample extends React.Component {
state = {
on: false
}
toggle = () => {
this.setState({ on: !this.state.on })
}
handleClick = (e) => {
this.props.setTimeout(this.toggle, 5000) // call the `toggle` function after 5000ms
}
render () {
return (
<div style={{ backgroundColor: (this.state.on ? 'yellow' : 'gray') }}>
<button onClick={this.handleClick}>Click me!</button>
</div>
)
}
}
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.
const Example = (props) => {
return (
<button
onClick={() => props.setTimeout(..)}>Click me!</button>
)
}
export default ReactTimeout(Example)
@ReactTimeout
class Example extends React.Component {
render () {
return (
<button
onClick={() => this.props.setTimeout(..)}>Click me!</button>
)
}
}
You can access the wrapped instance using React.createRef
from version 2+
.
If you're using version 1.x
you can access the wrapped instance with component.getWrappedInstance()
.
The timer mixin recommended by the react-native docs.
Only supported by version 1.x
.
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
FAQs
HOC for React and React Native providing versions of setTimeout etc. that cancels when unmounted.
The npm package react-timeout receives a total of 9,249 weekly downloads. As such, react-timeout popularity was classified as popular.
We found that react-timeout demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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