I have a React component for which I expect no children to be passed to it. Can I enforce it with typescript?
2 Answers
You can define the component's props like this:
type ComponentProps = {
children?: undefined;
}
type MyComponentProps = {
children?: never;
}
Valid cases:
<MyComponent />
Invalid cases:
<MyComponent>{undefined}</MyComponent><MyComponent>{'foobar'}</MyComponent><MyComponent>foobar</MyComponent><MyComponent><>foobar</></MyComponent><MyComponent><br /></MyComponent><MyComponent><b>foobar</b></MyComponent><MyComponent><Foo /></MyComponent>
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