test262/test/language/statements/generators/default-proto.js

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JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluatebody
es6id: 14.4.11
description: Intrinsic default prototype of GeneratorFunctions
info: |
1. Let G be ? OrdinaryCreateFromConstructor(functionObject,
"%GeneratorPrototype%", « [[GeneratorState]], [[GeneratorContext]] »).
[...]
9.1.13 OrdinaryCreateFromConstructor
[...]
2. Let proto be ? GetPrototypeFromConstructor(constructor,
intrinsicDefaultProto).
3. Return ObjectCreate(proto, internalSlotsList).
9.1.14 GetPrototypeFromConstructor
[...]
3. Let proto be ? Get(constructor, "prototype").
4. If Type(proto) is not Object, then
a. Let realm be ? GetFunctionRealm(constructor).
b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
[...]
features: [generators]
---*/
function* g() {}
var GeneratorPrototype = Object.getPrototypeOf(g).prototype;
g.prototype = null;
assert.sameValue(Object.getPrototypeOf(g()), GeneratorPrototype);