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var isObject = require('./isObject');

/** `Object#toString` result references. */
var regexpTag = '[object RegExp]';

/** Used for built-in method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/**
 * The base implementation of `_.isRegExp` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
 */
function baseIsRegExp(value) {
  return isObject(value) && objectToString.call(value) == regexpTag;
}

module.exports = baseIsRegExp;