validateTextareaProps() — react Function Reference

Source Code

packages/react-dom-bindings/src/client/ReactDOMTextarea.js lines 37–62

export function validateTextareaProps(element: Element, props: Object) {
  if (__DEV__) {
    if (
      props.value !== undefined &&
      props.defaultValue !== undefined &&
      !didWarnValDefaultVal
    ) {
      console.error(
        '%s contains a textarea with both value and defaultValue props. ' +
          'Textarea elements must be either controlled or uncontrolled ' +
          '(specify either the value prop, or the defaultValue prop, but not ' +
          'both). Decide between using a controlled or uncontrolled textarea ' +
          'and remove one of these props. More info: ' +
          'https://react.dev/link/controlled-components',
        getCurrentFiberOwnerNameInDevOrNull() || 'A component',
      );
      didWarnValDefaultVal = true;
    }
    if (props.children != null && props.value == null) {
      console.error(
        'Use the `defaultValue` or `value` props instead of setting ' +
          'children on <textarea>.',
      );
    }
  }
}