tor-browser

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async-gen-meth-static-dflt-ary-ptrn-elem-obj-val-undef.js (2362B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
      3 // - src/dstr-binding/error/cls-decl-async-gen-meth-static-dflt.template
      4 /*---
      5 description: Nested object destructuring with a value of `undefined` (static class expression async generator method (default parameter))
      6 esid: sec-runtime-semantics-bindingclassdeclarationevaluation
      7 features: [async-iteration]
      8 flags: [generated]
      9 info: |
     10    ClassDeclaration : class BindingIdentifier ClassTail
     11 
     12    1. Let className be StringValue of BindingIdentifier.
     13    2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
     14       argument className.
     15    [...]
     16 
     17    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     18 
     19    21. For each ClassElement m in order from methods
     20        a. If IsStatic of m is false, then
     21        b. Else,
     22           Let status be the result of performing PropertyDefinitionEvaluation for
     23           m with arguments F and false.
     24    [...]
     25 
     26    Runtime Semantics: PropertyDefinitionEvaluation
     27 
     28    AsyncGeneratorMethod :
     29        async [no LineTerminator here] * PropertyName ( UniqueFormalParameters )
     30            { AsyncGeneratorBody }
     31 
     32    1. Let propKey be the result of evaluating PropertyName.
     33    2. ReturnIfAbrupt(propKey).
     34    3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true.
     35       Otherwise let strict be false.
     36    4. Let scope be the running execution context's LexicalEnvironment.
     37    5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters,
     38       AsyncGeneratorBody, scope, strict).
     39    [...]
     40 
     41    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     42 
     43    BindingElement : BindingPattern Initializeropt
     44 
     45    1. If iteratorRecord.[[done]] is false, then
     46       [...]
     47       e. Else
     48          i. Let v be IteratorValue(next).
     49          [...]
     50    4. Return the result of performing BindingInitialization of BindingPattern
     51       with v and environment as the arguments.
     52 
     53    13.3.3.5 Runtime Semantics: BindingInitialization
     54 
     55    BindingPattern : ObjectBindingPattern
     56 
     57    1. Let valid be RequireObjectCoercible(value).
     58    2. ReturnIfAbrupt(valid).
     59 ---*/
     60 
     61 
     62 class C {
     63  static async *method([{ x }] = []) {
     64    
     65  }
     66 };
     67 
     68 var method = C.method;
     69 
     70 assert.throws(TypeError, function() {
     71  method();
     72 });
     73 
     74 reportCompare(0, 0);