Typescript: React 16.3 getDerivedStateFromProps support

[Kayomani]

In our application we use generics quite extensively for instance take the code:

export class Form<T> extends React.Component<IFormProps<T>, State> {

    componentWillReceiveProps(newProps: IFormProps<T>) {
        // snip
      }

}

In React 16.3 they are looking to change the API to:

export class Form<T> extends React.Component<IFormProps<T>, State> {

    static getDerivedStateFromProps(nextProps: IFormProps<T>, prevState: State) {

    }

This is pretty breaking as we can't reference the class generic from the static. I don't know the technical reason why they are forcing us to use statics beyond perhaps performance? I honestly see this is more of a react issue and having them not use static but I can see them just saying its a Typescript issue.

Are there any plans to support this generics in this way or any workarounds?

[s-ve]

Type definitions are hosted on DefinitelyTyped.

16.3 new lifecycle events have been merged already

See this PR

[Kayomani]

This isn't about the typings (I have the above) its about loss of support of generics:

[Kayomani]

This is probably less of an issue than I thought so I'll close for now. It would be nice to share any restrictions on the class generic mind you.

[s-ve]

oops sorry I misread your issue.

You should be able to do this :

export class Form<T> extends React.Component<IFormProps<T>, State> {

    static getDerivedStateFromProps<U>(nextProps: IFormProps<U>, prevState: State) {

    }

But since you are not supposed to call getDerivedStateFromProps directly, you could use any instead

export class Form<T> extends React.Component<IFormProps<T>, State> {

    static getDerivedStateFromProps(nextProps: IFormProps<any>, prevState: State) {

    }