113 lines
3.1 KiB
JavaScript
113 lines
3.1 KiB
JavaScript
/**
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* lodash 4.1.3 (Custom Build) <https://lodash.com/>
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* Build: `lodash modularize exports="npm" -o ./`
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* Copyright jQuery Foundation and other contributors <https://jquery.org/>
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* Released under MIT license <https://lodash.com/license>
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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*/
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/** Used for built-in method references. */
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var objectProto = Object.prototype;
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/** Used to check objects for own properties. */
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var hasOwnProperty = objectProto.hasOwnProperty;
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/**
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* Assigns `value` to `key` of `object` if the existing value is not equivalent
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* using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
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* for equality comparisons.
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*
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* @private
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* @param {Object} object The object to modify.
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* @param {string} key The key of the property to assign.
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* @param {*} value The value to assign.
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*/
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function assignValue(object, key, value) {
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var objValue = object[key];
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if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
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(value === undefined && !(key in object))) {
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object[key] = value;
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}
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}
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/**
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* This base implementation of `_.zipObject` which assigns values using `assignFunc`.
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*
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* @private
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* @param {Array} props The property identifiers.
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* @param {Array} values The property values.
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* @param {Function} assignFunc The function to assign values.
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* @returns {Object} Returns the new object.
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*/
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function baseZipObject(props, values, assignFunc) {
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var index = -1,
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length = props.length,
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valsLength = values.length,
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result = {};
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while (++index < length) {
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var value = index < valsLength ? values[index] : undefined;
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assignFunc(result, props[index], value);
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}
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return result;
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}
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/**
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* This method is like `_.fromPairs` except that it accepts two arrays,
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* one of property identifiers and one of corresponding values.
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*
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* @static
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* @memberOf _
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* @since 0.4.0
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* @category Array
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* @param {Array} [props=[]] The property identifiers.
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* @param {Array} [values=[]] The property values.
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* @returns {Object} Returns the new object.
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* @example
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*
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* _.zipObject(['a', 'b'], [1, 2]);
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* // => { 'a': 1, 'b': 2 }
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*/
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function zipObject(props, values) {
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return baseZipObject(props || [], values || [], assignValue);
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}
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/**
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* Performs a
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* [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
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* comparison between two values to determine if they are equivalent.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to compare.
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* @param {*} other The other value to compare.
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* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
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* @example
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*
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* var object = { 'user': 'fred' };
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* var other = { 'user': 'fred' };
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*
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* _.eq(object, object);
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* // => true
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*
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* _.eq(object, other);
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* // => false
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*
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* _.eq('a', 'a');
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* // => true
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*
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* _.eq('a', Object('a'));
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* // => false
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*
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* _.eq(NaN, NaN);
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* // => true
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*/
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function eq(value, other) {
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return value === other || (value !== value && other !== other);
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}
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module.exports = zipObject;
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