async-gen-meth-dflt-obj-ptrn-prop-ary-value-null.js (1479B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-ary-value-null.case 3 // - src/dstr-binding/error/async-gen-method-dflt.template 4 /*--- 5 description: Object binding pattern with "nested" array binding pattern taking the `null` value (async generator method (default parameter)) 6 esid: sec-asyncgenerator-definitions-propertydefinitionevaluation 7 features: [async-iteration] 8 flags: [generated] 9 info: | 10 AsyncGeneratorMethod : 11 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) 12 { AsyncGeneratorBody } 13 14 1. Let propKey be the result of evaluating PropertyName. 15 2. ReturnIfAbrupt(propKey). 16 3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true. 17 Otherwise let strict be false. 18 4. Let scope be the running execution context's LexicalEnvironment. 19 5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters, 20 AsyncGeneratorBody, scope, strict). 21 [...] 22 23 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 24 25 [...] 26 3. If Initializer is present and v is undefined, then 27 [...] 28 4. Return the result of performing BindingInitialization for BindingPattern 29 passing v and environment as arguments. 30 ---*/ 31 32 33 var obj = { 34 async *method({ w: [x, y, z] = [4, 5, 6] } = { w: null }) { 35 36 } 37 }; 38 39 assert.throws(TypeError, function() { 40 obj.method(); 41 }); 42 43 reportCompare(0, 0);