named-dflt-obj-ptrn-prop-id-init-throws.js (1246B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-id-init-throws.case 3 // - src/dstr-binding/error/async-gen-func-named-expr-dflt.template 4 /*--- 5 description: Error thrown when evaluating the initializer (async generator named function expression (default parameter)) 6 esid: sec-asyncgenerator-definitions-evaluation 7 features: [async-iteration] 8 flags: [generated] 9 info: | 10 AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier 11 ( FormalParameters ) { AsyncGeneratorBody } 12 13 [...] 14 7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, 15 AsyncGeneratorBody, funcEnv, strict). 16 [...] 17 18 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 19 20 BindingElement : BindingPattern Initializeropt 21 22 [...] 23 3. If Initializer is present and v is undefined, then 24 a. Let defaultValue be the result of evaluating Initializer. 25 b. Let v be GetValue(defaultValue). 26 c. ReturnIfAbrupt(v). 27 ---*/ 28 function thrower() { 29 throw new Test262Error(); 30 } 31 32 33 var f; 34 f = async function* h({ x: y = thrower() } = {}) { 35 36 }; 37 38 assert.throws(Test262Error, function() { 39 f(); 40 }); 41 42 reportCompare(0, 0);