Function forEachChildren

packages/react/src/ReactChildren.js:406–420

* Iterates through children that are typically specified as `props.children`. * * See https://reactjs.org/docs/react-api.html#reactchildrenforeach * * The provided forEachFunc(child, index) will be called for each * leaf child. * * @param {?*} children Children tree container. * @param {func

(
  children: ?ReactNodeList,
  forEachFunc: ForEachFunc,
  forEachContext: mixed,
)

 * @param {*} forEachContext Context for forEachContext.
 */
function forEachChildren(
  children: ?ReactNodeList,
  forEachFunc: ForEachFunc,
  forEachContext: mixed,
): void {
  mapChildren(
    children,
    // $FlowFixMe[missing-this-annot]
    function () {
      forEachFunc.apply(this, arguments);
      // Don't return anything.
    },
    forEachContext,
  );
}

/**
 * Flatten a children object (typically specified as `props.children`) and