Example: https://jsfiddle.net/gingur/u0h2rjae/1/

When generating **child context** with a stateless Component, the context is not available to the children.

this._pendingCallbacks = null;
    
    this._calledComponentWillUnmount = false;
    if (__DEV__) {
      this._warnedAboutRefsInRender = false;
    }
  },
  /**
   * Initializes the component, renders markup, and registers event listeners.
   *
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @param {?object} hostParent
   * @param {?object} hostContainerInfo
   * @param {?object} context
   * @return {?string} Rendered markup to be inserted into the DOM.
   * @final
   * @internal
   */
  mountComponent: function(
    transaction,
    hostParent,
    hostContainerInfo,
    context
  ) {
    this._context = context;
    this._mountOrder = nextMountID++;
    this._hostParent = hostParent;
    this._hostContainerInfo = hostContainerInfo;
    var publicProps = this._currentElement.props;