// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 14.2.16 description: > Runtime Semantics: Evaluation this ... 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict). ... The non-normative note elaborates on the "scope" argument: An ArrowFunction does not define local bindings for arguments, super, this, or new.target. Any reference to arguments, super, or this within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will be the Function Environment of an immediately enclosing function. Even though an ArrowFunction may contain references to super, the function object created in step 4 is not made into a method by performing MakeMethod. An ArrowFunction that references super is always contained within a non-ArrowFunction and the necessary state to implement super is accessible via the scope that is captured by the function object of the ArrowFunction. ---*/ function F() { this.af = _ => { return this; }; } var usurper = {}; var f = new F(); assert.sameValue(f.af(), f); assert.sameValue(f.af.apply(usurper), f); assert.sameValue(f.af.call(usurper), f); assert.sameValue(f.af.bind(usurper)(), f);