frontend-admin / Daocheng-Yading

  /**
   * creates a Ref object with on change callback
   * @param callback
   * @returns {RefObject}
   *
   * @see {@link useCallbackRef}
   * @see https://reactjs.org/docs/refs-and-the-dom.html#creating-refs
   */
  export function createCallbackRef(callback) {
      var current = null;
      return {
          get current() {
              return current;
          },
          set current(value) {
              var last = current;
              if (last !== value) {
                  current = value;
                  callback(value, last);
              }
          },
      };
  }