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55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
/**
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* lodash 3.0.0 (Custom Build) <https://lodash.com/>
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* Build: `lodash modern modularize exports="npm" -o ./`
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* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
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* Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
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* Copyright 2009-2015 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 boolTag = '[object Boolean]';
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/**
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* Checks if `value` is object-like.
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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 object-like, else `false`.
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*/
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function isObjectLike(value) {
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return (value && typeof value == 'object') || false;
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}
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/** Used for native method references. */
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var objectProto = Object.prototype;
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/**
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* Used to resolve the `toStringTag` of values.
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* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
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* for more details.
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*/
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var objToString = objectProto.toString;
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/**
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* Checks if `value` is classified as a boolean 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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* _.isBoolean(false);
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* // => true
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*
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* _.isBoolean(null);
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* // => false
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*/
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function isBoolean(value) {
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return (value === true || value === false || isObjectLike(value) && objToString.call(value) == boolTag) || false;
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}
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module.exports = isBoolean;
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