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

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

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

/**
 * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/**
 * Checks if `value` is classified as a `WeakSet` object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isWeakSet(new WeakSet);
 * // => true
 *
 * _.isWeakSet(new Set);
 * // => false
 */
function isWeakSet(value) {
  return isObjectLike(value) && objectToString.call(value) == weakSetTag;
}

module.exports = isWeakSet;