// Debugger.Object.prototype.isArrowFunction recognizes arrow functions. var g = newGlobal(); var dbg = new Debugger; var gDO = dbg.addDebuggee(g); var hits = 0; function checkIsArrow(shouldBe, expr) { print(expr); assertEq(gDO.executeInGlobal(expr).return.isArrowFunction, shouldBe); } checkIsArrow(true, '() => { }'); checkIsArrow(true, '(a) => { bleh; }'); checkIsArrow(false, 'Object.getPrototypeOf(() => { })'); checkIsArrow(false, '(function () { })'); checkIsArrow(false, 'function f() { } f'); checkIsArrow((void 0), '({})'); checkIsArrow(false, 'Math.atan2'); checkIsArrow(false, 'Function.prototype'); checkIsArrow(false, 'Function("")'); checkIsArrow(false, 'new Function("")');