/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize underscore exports="node" -o ./underscore/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var objectTypes = require('../internals/objectTypes');

/** `Object#toString` result shortcuts */
var regexpClass = '[object RegExp]';

/** Used for native method references */
var objectProto = Object.prototype;

/** Used to resolve the internal [[Class]] of values */
var toString = objectProto.toString;

/**
 * Checks if `value` is a regular expression.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if the `value` is a regular expression, else `false`.
 * @example
 *
 * _.isRegExp(/fred/);
 * // => true
 */
function isRegExp(value) {
  return value && objectTypes[typeof value] && toString.call(value) == regexpClass || false;
}

module.exports = isRegExp;
