tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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has-instance.js (1105B)

      1 // Copyright (C) 2013 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 es6id: 25.2
      5 description: >
      6    Generator function instances are correctly reported as instances of the
      7    GeneratorFunction intrinsic.
      8 features: [generators]
      9 ---*/
     10 
     11 var GeneratorFunction = Object.getPrototypeOf(function*() {}).constructor;
     12 
     13 function* gDecl() {}
     14 var gExpr = function*() {};
     15 
     16 assert(
     17  gDecl instanceof GeneratorFunction,
     18  'Generators created via GeneratorDeclaration syntax are proper instances of GeneratorFunction'
     19 );
     20 
     21 assert(
     22  gExpr instanceof GeneratorFunction,
     23  'Generators created via GeneratorExpression syntax are proper instances of GeneratorFunction'
     24 );
     25 
     26 assert(
     27  new GeneratorFunction() instanceof GeneratorFunction,
     28  'Generators created via constructor invocation of GeneratorFunction are proper instances of GeneratorFunction'
     29 );
     30 
     31 assert(
     32  GeneratorFunction() instanceof GeneratorFunction,
     33  'Generators created via function invocation of GeneratorFunction are proper instances of GeneratorFunction'
     34 );
     35 
     36 reportCompare(0, 0);