named-ary-ptrn-elem-id-init-unresolvable.js (1405B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case 3 // - src/dstr-binding/error/async-gen-func-named-expr.template 4 /*--- 5 description: Destructuring initializer is an unresolvable reference (async generator named function expression) 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 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 19 20 SingleNameBinding : BindingIdentifier Initializeropt 21 22 [...] 23 6. 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 6.2.3.1 GetValue (V) 29 30 1. ReturnIfAbrupt(V). 31 2. If Type(V) is not Reference, return V. 32 3. Let base be GetBase(V). 33 4. If IsUnresolvableReference(V), throw a ReferenceError exception. 34 ---*/ 35 36 37 var f; 38 f = async function* g([ x = unresolvableReference ]) { 39 40 }; 41 42 assert.throws(ReferenceError, function() { 43 f([]); 44 }); 45 46 reportCompare(0, 0);