var x = function (foo) { for (var _len = arguments.length, bar = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { bar[_key - 1] = arguments[_key]; } console.log(bar); }; var y = function (foo) { var x = function z(bar) { bar[1] = 5; }; }; var b = function (x, y) { for (var _len2 = arguments.length, args = new Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) { args[_key2 - 2] = arguments[_key2]; } console.log(args[0]); args.pop(); console.log(args[1]); }; var z = function (foo) { for (var _len3 = arguments.length, bar = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) { bar[_key3 - 1] = arguments[_key3]; } var x = function () { bar[1] = 5; }; }; var a = function (foo) { for (var _len4 = arguments.length, bar = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) { bar[_key4 - 1] = arguments[_key4]; } return bar.join(","); }; var b = function (foo) { var join = "join"; for (var _len5 = arguments.length, bar = new Array(_len5 > 1 ? _len5 - 1 : 0), _key5 = 1; _key5 < _len5; _key5++) { bar[_key5 - 1] = arguments[_key5]; } return bar[join]; }; var b = function () { for (var _len6 = arguments.length, bar = new Array(_len6), _key6 = 0; _key6 < _len6; _key6++) { bar[_key6] = arguments[_key6]; } return bar.len; }; var b = function (foo) { return (arguments.length <= 1 ? 0 : arguments.length - 1) * 2; }; var b = function (foo, baz) { return arguments.length <= 2 ? 0 : arguments.length - 2; }; function x() { for (var _len7 = arguments.length, rest = new Array(_len7), _key7 = 0; _key7 < _len7; _key7++) { rest[_key7] = arguments[_key7]; } rest[0] = 0; } function swap() { for (var _len8 = arguments.length, rest = new Array(_len8), _key8 = 0; _key8 < _len8; _key8++) { rest[_key8] = arguments[_key8]; } var _ref = [rest[1], rest[0]]; rest[0] = _ref[0]; rest[1] = _ref[1]; } function forIn() { for (var _len9 = arguments.length, rest = new Array(_len9), _key9 = 0; _key9 < _len9; _key9++) { rest[_key9] = arguments[_key9]; } for (rest[0] in this) { foo(rest[0]); } } function inc() { for (var _len10 = arguments.length, rest = new Array(_len10), _key10 = 0; _key10 < _len10; _key10++) { rest[_key10] = arguments[_key10]; } ++rest[0]; } function dec() { for (var _len11 = arguments.length, rest = new Array(_len11), _key11 = 0; _key11 < _len11; _key11++) { rest[_key11] = arguments[_key11]; } --rest[0]; } function del() { for (var _len12 = arguments.length, rest = new Array(_len12), _key12 = 0; _key12 < _len12; _key12++) { rest[_key12] = arguments[_key12]; } delete rest[0]; } function method() { for (var _len13 = arguments.length, rest = new Array(_len13), _key13 = 0; _key13 < _len13; _key13++) { rest[_key13] = arguments[_key13]; } rest[0](); } function newExp() { for (var _len14 = arguments.length, rest = new Array(_len14), _key14 = 0; _key14 < _len14; _key14++) { rest[_key14] = arguments[_key14]; } new rest[0](); } // In addition to swap() above because at some point someone tried checking // grandparent path for isArrayExpression() to deopt. function arrayDestructure() { for (var _len15 = arguments.length, rest = new Array(_len15), _key15 = 0; _key15 < _len15; _key15++) { rest[_key15] = arguments[_key15]; } var _x = x; var _x2 = babelHelpers.slicedToArray(_x, 1); rest[0] = _x2[0]; } function forOf() { for (var _len16 = arguments.length, rest = new Array(_len16), _key16 = 0; _key16 < _len16; _key16++) { rest[_key16] = arguments[_key16]; } var _iterator = babelHelpers.createForOfIteratorHelper(this), _step; try { for (_iterator.s(); !(_step = _iterator.n()).done;) { rest[0] = _step.value; ; } } catch (err) { _iterator.e(err); } finally { _iterator.f(); } } function postfixIncrement() { for (var _len17 = arguments.length, rest = new Array(_len17), _key17 = 0; _key17 < _len17; _key17++) { rest[_key17] = arguments[_key17]; } rest[0]++; } function postfixDecrement() { for (var _len18 = arguments.length, rest = new Array(_len18), _key18 = 0; _key18 < _len18; _key18++) { rest[_key18] = arguments[_key18]; } rest[0]--; }