tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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yield-spread-arr-single.js (2120B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/generators/yield-spread-arr-single.case
      3 // - src/generators/default/class-decl-static-private-method.template
      4 /*---
      5 description: Use yield value in a array spread position (Static generator private method as a ClassDeclaration element)
      6 esid: prod-GeneratorPrivateMethod
      7 features: [generators, class-static-methods-private]
      8 flags: [generated]
      9 info: |
     10    ClassElement :
     11      static PrivateMethodDefinition
     12 
     13    MethodDefinition :
     14      GeneratorMethod
     15 
     16    14.4 Generator Function Definitions
     17 
     18    GeneratorMethod :
     19      * PropertyName ( UniqueFormalParameters ) { GeneratorBody }
     20 
     21 
     22    Array Initializer
     23 
     24    SpreadElement[Yield, Await]:
     25      ...AssignmentExpression[+In, ?Yield, ?Await]
     26 ---*/
     27 var arr = ['a', 'b', 'c'];
     28 
     29 var callCount = 0;
     30 
     31 class C {
     32    static *#gen() {
     33        callCount += 1;
     34        yield [...yield];
     35    }
     36    static get gen() { return this.#gen; }
     37 }
     38 
     39 // Test the private fields do not appear as properties before set to value
     40 assert(
     41  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     42  "Private field '#gen' does not appear as an own property on C prototype"
     43 );
     44 assert(
     45  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     46  "Private field '#gen' does not appear as an own property on C constructor"
     47 );
     48 
     49 var iter = C.gen();
     50 
     51 iter.next(false);
     52 var item = iter.next(arr);
     53 var value = item.value;
     54 
     55 assert.notSameValue(value, arr, 'value is a new array');
     56 assert(Array.isArray(value), 'value is an Array exotic object');
     57 assert.sameValue(value.length, 3)
     58 assert.sameValue(value[0], 'a');
     59 assert.sameValue(value[1], 'b');
     60 assert.sameValue(value[2], 'c');
     61 assert.sameValue(item.done, false);
     62 
     63 assert.sameValue(callCount, 1);
     64 
     65 // Test the private fields do not appear as properties before set to value
     66 assert(
     67  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     68  "Private field '#gen' does not appear as an own property on C prototype"
     69 );
     70 assert(
     71  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     72  "Private field '#gen' does not appear as an own property on C constructor"
     73 );
     74 
     75 reportCompare(0, 0);