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95 lines
2.2 KiB
95 lines
2.2 KiB
/** |
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* lodash 4.0.1 (Custom Build) <https://lodash.com/> |
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* Build: `lodash modularize exports="npm" -o ./` |
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* Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/> |
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE> |
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* Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors |
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* Available under MIT license <https://lodash.com/license> |
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*/ |
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/** `Object#toString` result references. */ |
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var stringTag = '[object String]'; |
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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 [`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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* Checks if `value` is classified as an `Array` object. |
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* |
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* @static |
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* @memberOf _ |
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* @type Function |
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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 correctly classified, else `false`. |
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* @example |
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* |
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* _.isArray([1, 2, 3]); |
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* // => true |
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* |
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* _.isArray(document.body.children); |
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* // => false |
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* |
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* _.isArray('abc'); |
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* // => false |
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* |
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* _.isArray(_.noop); |
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* // => false |
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*/ |
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var isArray = Array.isArray; |
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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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* @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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/** |
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* Checks if `value` is classified as a `String` primitive or object. |
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* |
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* @static |
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* @memberOf _ |
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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 correctly classified, else `false`. |
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* @example |
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* |
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* _.isString('abc'); |
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* // => true |
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* |
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* _.isString(1); |
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* // => false |
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*/ |
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function isString(value) { |
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return typeof value == 'string' || |
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(!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag); |
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} |
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module.exports = isString;
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