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- var baseAssignValue = require('./_baseAssignValue'),
- eq = require('./eq');
-
- /** Used for built-in method references. */
- var objectProto = Object.prototype;
-
- /** Used to check objects for own properties. */
- var hasOwnProperty = objectProto.hasOwnProperty;
-
- /**
- * Assigns `value` to `key` of `object` if the existing value is not equivalent
- * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
- * for equality comparisons.
- *
- * @private
- * @param {Object} object The object to modify.
- * @param {string} key The key of the property to assign.
- * @param {*} value The value to assign.
- */
- function assignValue(object, key, value) {
- var objValue = object[key];
- if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
- (value === undefined && !(key in object))) {
- baseAssignValue(object, key, value);
- }
- }
-
- module.exports = assignValue;
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