How to iterate through a Component's Children in Typescript React?

Using any should generally be avoided as you're losing the type info.

Instead use React.ReactElement<P> in the function parameter type:

React.Children.map(this.props.children, (child: React.ReactElement<ChildPropTypes>) => child.props.bar)

reactjs typescript react-jsx tsx

However, in Typescript, the type of x is React.ReactElement so I have no access to props. Is there some kind of casting that I need to do?

Yes. Also prefer the term assertion. A quick one:

React.Children.map(this.props.children, x => (x as any).props.foo)

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