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- import keys from '../object/keys';
- /**
- * A specialized version of `_.assign` for customizing assigned values without
- * support for argument juggling, multiple sources, and `this` binding `customizer`
- * functions.
- *
- * @private
- * @param {Object} object The destination object.
- * @param {Object} source The source object.
- * @param {Function} customizer The function to customize assigned values.
- * @returns {Object} Returns `object`.
- */
- function assignWith(object, source, customizer) {
- var index = -1,
- props = keys(source),
- length = props.length;
- while (++index < length) {
- var key = props[index],
- value = object[key],
- result = customizer(value, source[key], key, object, source);
- if ((result === result ? (result !== value) : (value === value)) ||
- (value === undefined && !(key in object))) {
- object[key] = result;
- }
- }
- return object;
- }
- export default assignWith;
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