tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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has-instance.js (1265B)

      1 // Copyright (C) 2018 Valerie Young. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-properties-of-asyncgeneratorfunction
      5 description: >
      6    AsyncGenerator function instances are correctly reported as instances of the
      7    AsyncGeneratorFunction intrinsic.
      8 features: [async-iteration]
      9 ---*/
     10 
     11 var AsyncGeneratorFunction = Object.getPrototypeOf(async function* () {}).constructor;
     12 
     13 async function* agDecl() {}
     14 var agExpr = async function* () {};
     15 
     16 assert(
     17  agDecl instanceof AsyncGeneratorFunction,
     18  'AsyncGenerators created via AsyncGeneratorDeclaration syntax are proper instances of AsyncGeneratorFunction'
     19 );
     20 
     21 assert(
     22  agExpr instanceof AsyncGeneratorFunction,
     23  'AsyncGenerators created via AsyncGeneratorExpression syntax are proper instances of AsyncGeneratorFunction'
     24 );
     25 
     26 assert(
     27  new AsyncGeneratorFunction() instanceof AsyncGeneratorFunction,
     28  'AsyncGenerators created via constructor invocation of AsyncGeneratorFunction are proper instances of AsyncGeneratorFunction'
     29 );
     30 
     31 assert(
     32  AsyncGeneratorFunction() instanceof AsyncGeneratorFunction,
     33  'AsyncGenerators created via function invocation of AsyncGeneratorFunction are proper instances of AsyncGeneratorFunction'
     34 );
     35 
     36 reportCompare(0, 0);