Infer arguments types from interface

[patrick91]

I've tried to look for this issues, but I didn't find any.
Here's an example of the problem:

interface IComponentLifecycle<P> {
 componentWillReceiveProps?(nextProps: Readonly<P>, nextContext: any): void;
}

interface IProps {
 hello: string;
}

class X implements IComponentLifecycle<IProps> {
 componentWillReceiveProps(nextProps) { // <-- nextProps is any
 // TODO: logic
 }
}

This is based on react's typings (that's how I found the issue).

Is this an expected behaviour or not?

[ikatyang]

Duplicate of #16590, see #1373 and #6118.

[patrick91]

Thanks, sorry I didn't find that issue, I'll close this