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;