react-youtube-playlist/example/node_modules/react-deep-force-update/src/index.js

A react component for displaying the contents of a user's YouTube playlist.

function traverseRenderedChildren(internalInstance, callback, argument) {
  callback(internalInstance, argument);

  if (internalInstance._renderedComponent) {
    traverseRenderedChildren(
      internalInstance._renderedComponent,
      callback,
      argument
    );
  } else {
    for (let key in internalInstance._renderedChildren) {
      if (internalInstance._renderedChildren.hasOwnProperty(key)) {
        traverseRenderedChildren(
          internalInstance._renderedChildren[key],
          callback,
          argument
        );
      }
    }
  }
}

function setPendingForceUpdate(internalInstance) {
  if (internalInstance._pendingForceUpdate === false) {
    internalInstance._pendingForceUpdate = true;
  }
}

function forceUpdateIfPending(internalInstance) {
  if (internalInstance._pendingForceUpdate === true) {
    const publicInstance = internalInstance._instance;
    const { updater } = publicInstance;

    if (typeof publicInstance.forceUpdate === 'function') {
      publicInstance.forceUpdate();
    } else if (updater && typeof updater.enqueueForceUpdate === 'function') {
      updater.enqueueForceUpdate(publicInstance);
    }
  }
}

export default function deepForceUpdate(instance) {
  const internalInstance = instance._reactInternalInstance;
  traverseRenderedChildren(internalInstance, setPendingForceUpdate);
  traverseRenderedChildren(internalInstance, forceUpdateIfPending);
}