time-to-botec

Benchmark sampling in different programming languages
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isArguments.js (1026B)

      1 var baseIsArguments = require('./_baseIsArguments'),
      2     isObjectLike = require('./isObjectLike');
      3 
      4 /** Used for built-in method references. */
      5 var objectProto = Object.prototype;
      6 
      7 /** Used to check objects for own properties. */
      8 var hasOwnProperty = objectProto.hasOwnProperty;
      9 
     10 /** Built-in value references. */
     11 var propertyIsEnumerable = objectProto.propertyIsEnumerable;
     12 
     13 /**
     14  * Checks if `value` is likely an `arguments` object.
     15  *
     16  * @static
     17  * @memberOf _
     18  * @since 0.1.0
     19  * @category Lang
     20  * @param {*} value The value to check.
     21  * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     22  *  else `false`.
     23  * @example
     24  *
     25  * _.isArguments(function() { return arguments; }());
     26  * // => true
     27  *
     28  * _.isArguments([1, 2, 3]);
     29  * // => false
     30  */
     31 var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
     32   return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
     33     !propertyIsEnumerable.call(value, 'callee');
     34 };
     35 
     36 module.exports = isArguments;