Function default

Deprecated

Lets you specify which legacy context is consumed by this component.

See

Legacy React Docs

Used to define default values for the props accepted by the component.

See

React Docs

Example

type Props = { name?: string }

const MyComponent: FC<Props> = (props) => {
  return <div>{props.name}</div>
}

MyComponent.defaultProps = {
  name: 'John Doe'
}
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Used in debugging messages. You might want to set it explicitly if you want to display a different name for debugging purposes.

See

Legacy React Docs

Example

const MyComponent: FC = () => {
  return <div>Hello!</div>
}

MyComponent.displayName = 'MyAwesomeComponent'
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Used to declare the types of the props accepted by the component. These types will be checked during rendering and in development only.

We recommend using TypeScript instead of checking prop types at runtime.

See

React Docs