Function baseMerge

test/babel.js:51748–51765

* The base implementation of `_.merge` without support for multiple sources. * * @private * @param {Object} object The destination object. * @param {Object} source The source object. * @param {number} srcIndex The index of `source`. * @param {Function} [customizer] The function to custom

(object, source, srcIndex, customizer, stack)

	 *  counterparts.
	 */
	function baseMerge(object, source, srcIndex, customizer, stack) {
	  if (object === source) {
	    return;
	  }
	  baseFor(source, function (srcValue, key) {
	    if (isObject(srcValue)) {
	      stack || (stack = new Stack());
	      baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
	    } else {
	      var newValue = customizer ? customizer(object[key], srcValue, key + '', object, source, stack) : undefined;

	      if (newValue === undefined) {
	        newValue = srcValue;
	      }
	      assignMergeValue(object, key, newValue);
	    }
	  }, keysIn);
	}

	module.exports = baseMerge;