120 lines
3.2 KiB
JavaScript
120 lines
3.2 KiB
JavaScript
/**
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* lodash (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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/** `Object#toString` result references. */
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var dateTag = '[object Date]';
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/** Detect free variable `global` from Node.js. */
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var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
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/** Detect free variable `exports`. */
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var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
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/** Detect free variable `module`. */
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var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
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/** Detect the popular CommonJS extension `module.exports`. */
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var moduleExports = freeModule && freeModule.exports === freeExports;
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/** Detect free variable `process` from Node.js. */
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var freeProcess = moduleExports && freeGlobal.process;
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/** Used to access faster Node.js helpers. */
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var nodeUtil = (function() {
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try {
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return freeProcess && freeProcess.binding('util');
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} catch (e) {}
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}());
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/* Node.js helper references. */
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var nodeIsDate = nodeUtil && nodeUtil.isDate;
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/**
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* The base implementation of `_.unary` without support for storing metadata.
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*
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* @private
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* @param {Function} func The function to cap arguments for.
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* @returns {Function} Returns the new capped function.
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*/
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function baseUnary(func) {
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return function(value) {
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return func(value);
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};
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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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/**
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* Used to resolve the
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* [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
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* of values.
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*/
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var objectToString = objectProto.toString;
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/**
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* The base implementation of `_.isDate` without Node.js optimizations.
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a date object, else `false`.
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*/
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function baseIsDate(value) {
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return isObjectLike(value) && objectToString.call(value) == dateTag;
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}
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/**
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* Checks if `value` is classified as a `Date` object.
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*
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* @static
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* @memberOf _
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* @since 0.1.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a date object, else `false`.
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* @example
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*
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* _.isDate(new Date);
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* // => true
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*
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* _.isDate('Mon April 23 2012');
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* // => false
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*/
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var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;
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/**
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* Checks if `value` is object-like. A value is object-like if it's not `null`
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* and has a `typeof` result of "object".
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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 check.
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* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
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* @example
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*
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* _.isObjectLike({});
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* // => true
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*
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* _.isObjectLike([1, 2, 3]);
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* // => true
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*
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* _.isObjectLike(_.noop);
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* // => false
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*
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* _.isObjectLike(null);
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* // => false
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*/
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function isObjectLike(value) {
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return !!value && typeof value == 'object';
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}
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module.exports = isDate;
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