Function cloneInstance

packages/react-noop-renderer/src/createReactNoop.js:243–289

(
    instance: Instance,
    type: string,
    oldProps: Props,
    newProps: Props,
    keepChildren: boolean,
    children: ?$ReadOnlyArray<Instance>,
  )

  }

  function cloneInstance(
    instance: Instance,
    type: string,
    oldProps: Props,
    newProps: Props,
    keepChildren: boolean,
    children: ?$ReadOnlyArray<Instance>,
  ): Instance {
    if (__DEV__) {
      checkPropStringCoercion(newProps.children, 'children');
    }
    const clone = {
      id: instance.id,
      type: type,
      parent: instance.parent,
      children: keepChildren ? instance.children : (children ?? []),
      text: shouldSetTextContent(type, newProps)
        ? computeText((newProps.children: any) + '', instance.context)
        : null,
      prop: newProps.prop,
      hidden: !!newProps.hidden,
      context: instance.context,
    };

    if (type === 'suspensey-thing' && typeof newProps.src === 'string') {
      clone.src = newProps.src;
    }

    Object.defineProperty(clone, 'id', {
      value: clone.id,
      enumerable: false,
    });
    Object.defineProperty(clone, 'parent', {
      value: clone.parent,
      enumerable: false,
    });
    Object.defineProperty(clone, 'text', {
      value: clone.text,
      enumerable: false,
    });
    Object.defineProperty(clone, 'context', {
      value: clone.context,
      enumerable: false,
    });
    hostCloneCounter++;
    return clone;
  }

  function shouldSetTextContent(type: string, props: Props): boolean {
    if (type === 'errorInBeginPhase') {