Function createMergedResultFunction

docs/lib/react.js:4922–4936

* Creates a function that invokes two functions and merges their return values. * * @param {function} one Function to invoke first. * @param {function} two Function to invoke second. * @return {function} Function that invokes the two argument functions. * @private

(one, two)

 * @private
 */
function createMergedResultFunction(one, two) {
  return function mergedResult() {
    var a = one.apply(this, arguments);
    var b = two.apply(this, arguments);
    if (a == null) {
      return b;
    } else if (b == null) {
      return a;
    }
    var c = {};
    mergeIntoWithNoDuplicateKeys(c, a);
    mergeIntoWithNoDuplicateKeys(c, b);
    return c;
  };
}

/**
 * Creates a function that invokes two functions and ignores their return vales.