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Type parameters
S
SS
Hierarchy
PureComponent<Props>
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Methods
<Optional> UNSAFE_componentWillMount
▸ UNSAFE_componentWillMount(): void
Inherited from DeprecatedLifecycle.UNSAFE_componentWillMount
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:613
Called immediately before mounting occurs, and before Component#render. Avoid introducing any side-effects or subscriptions in this method.
This method will not stop working in React 17.
Note: the presence of getSnapshotBeforeUpdate or getDerivedStateFromProps prevents this from being invoked.
deprecated: 16.3, use componentDidMount or the constructor instead
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#initializing-state
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#gradual-migration-path
Returns: void
<Optional> UNSAFE_componentWillReceiveProps
▸ UNSAFE_componentWillReceiveProps(nextProps: Readonly<Props>, nextContext: any): void
Inherited from DeprecatedLifecycle.UNSAFE_componentWillReceiveProps
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:645
Called when the component may be receiving new props. React may call this even if props have not changed, so be sure to compare new and existing props if you only want to handle changes.
Calling Component#setState generally does not trigger this method.
This method will not stop working in React 17.
Note: the presence of getSnapshotBeforeUpdate or getDerivedStateFromProps prevents this from being invoked.
deprecated: 16.3, use static getDerivedStateFromProps instead
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#updating-state-based-on-props
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#gradual-migration-path
Parameters:
| Name | Type |
|---|---|
| nextProps | Readonly<Props> |
| nextContext | any |
Returns: void
<Optional> UNSAFE_componentWillUpdate
▸ UNSAFE_componentWillUpdate(nextProps: Readonly<Props>, nextState: Readonly<S>, nextContext: any): void
Inherited from DeprecatedLifecycle.UNSAFE_componentWillUpdate
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:673
Called immediately before rendering when new props or state is received. Not called for the initial render.
Note: You cannot call Component#setState here.
This method will not stop working in React 17.
Note: the presence of getSnapshotBeforeUpdate or getDerivedStateFromProps prevents this from being invoked.
deprecated: 16.3, use getSnapshotBeforeUpdate instead
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#gradual-migration-path
Parameters:
| Name | Type |
|---|---|
| nextProps | Readonly<Props> |
| nextState | Readonly<S> |
| nextContext | any |
Returns: void
<Optional> componentDidCatch
▸ componentDidCatch(error: Error, errorInfo: ErrorInfo): void
Inherited from ComponentLifecycle.componentDidCatch
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:542
Catches exceptions generated in descendant components. Unhandled exceptions will cause the entire component tree to unmount.
Parameters:
| Name | Type |
|---|---|
| error | Error |
| errorInfo | ErrorInfo |
Returns: void
<Optional> componentDidMount
▸ componentDidMount(): void
Inherited from ComponentLifecycle.componentDidMount
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:521
Called immediately after a component is mounted. Setting state here will trigger re-rendering.
Returns: void
<Optional> componentDidUpdate
▸ componentDidUpdate(prevProps: Readonly<Props>, prevState: Readonly<S>, snapshot?: SS): void
Inherited from NewLifecycle.componentDidUpdate
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:584
Called immediately after updating occurs. Not called for the initial render.
The snapshot is only present if getSnapshotBeforeUpdate is present and returns non-null.
Parameters:
| Name | Type |
|---|---|
| prevProps | Readonly<Props> |
| prevState | Readonly<S> |
Optional snapshot |
SS |
Returns: void
<Optional> componentWillMount
▸ componentWillMount(): void
Inherited from DeprecatedLifecycle.componentWillMount
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:599
Called immediately before mounting occurs, and before Component#render. Avoid introducing any side-effects or subscriptions in this method.
Note: the presence of getSnapshotBeforeUpdate or getDerivedStateFromProps prevents this from being invoked.
deprecated: 16.3, use componentDidMount or the constructor instead; will stop working in React 17
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#initializing-state
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#gradual-migration-path
Returns: void
<Optional> componentWillReceiveProps
▸ componentWillReceiveProps(nextProps: Readonly<Props>, nextContext: any): void
Inherited from DeprecatedLifecycle.componentWillReceiveProps
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:628
Called when the component may be receiving new props. React may call this even if props have not changed, so be sure to compare new and existing props if you only want to handle changes.
Calling Component#setState generally does not trigger this method.
Note: the presence of getSnapshotBeforeUpdate or getDerivedStateFromProps prevents this from being invoked.
deprecated: 16.3, use static getDerivedStateFromProps instead; will stop working in React 17
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#updating-state-based-on-props
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#gradual-migration-path
Parameters:
| Name | Type |
|---|---|
| nextProps | Readonly<Props> |
| nextContext | any |
Returns: void
<Optional> componentWillUnmount
▸ componentWillUnmount(): void
Inherited from ComponentLifecycle.componentWillUnmount
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:537
Called immediately before a component is destroyed. Perform any necessary cleanup in this method, such as cancelled network requests, or cleaning up any DOM elements created in componentDidMount.
Returns: void
<Optional> componentWillUpdate
▸ componentWillUpdate(nextProps: Readonly<Props>, nextState: Readonly<S>, nextContext: any): void
Inherited from DeprecatedLifecycle.componentWillUpdate
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:658
Called immediately before rendering when new props or state is received. Not called for the initial render.
Note: You cannot call Component#setState here.
Note: the presence of getSnapshotBeforeUpdate or getDerivedStateFromProps prevents this from being invoked.
deprecated: 16.3, use getSnapshotBeforeUpdate instead; will stop working in React 17
see: https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html#gradual-migration-path
Parameters:
| Name | Type |
|---|---|
| nextProps | Readonly<Props> |
| nextState | Readonly<S> |
| nextContext | any |
Returns: void
<Optional> getSnapshotBeforeUpdate
▸ getSnapshotBeforeUpdate(prevProps: Readonly<Props>, prevState: Readonly<S>): SS | null
Inherited from NewLifecycle.getSnapshotBeforeUpdate
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:578
Runs before React applies the result of render to the document, and returns an object to be given to componentDidUpdate. Useful for saving things such as scroll position before render causes changes to it.
Note: the presence of getSnapshotBeforeUpdate prevents any of the deprecated lifecycle events from running.
Parameters:
| Name | Type |
|---|---|
| prevProps | Readonly<Props> |
| prevState | Readonly<S> |
Returns: SS | null
render
▸ render(): Element
Defined in icons/Empty.tsx:10
Returns: Element
<Optional> shouldComponentUpdate
▸ shouldComponentUpdate(nextProps: Readonly<Props>, nextState: Readonly<S>, nextContext: any): boolean
Inherited from ComponentLifecycle.shouldComponentUpdate
Defined in /home/travis/build/polkadot-js/ui/node_modules/@types/react/index.d.ts:532
Called to determine whether the change in props and state should trigger a re-render.
Component always returns true. PureComponent implements a shallow comparison on props and state and returns true if any props or states have changed.
If false is returned, Component#render, componentWillUpdate and componentDidUpdate will not be called.
Parameters:
| Name | Type |
|---|---|
| nextProps | Readonly<Props> |
| nextState | Readonly<S> |
| nextContext | any |
Returns: boolean