| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case |
| // - src/dstr-binding/error/async-gen-func-decl.template |
| /*--- |
| description: Destructuring initializer is an unresolvable reference (async generator function declaration) |
| esid: sec-asyncgenerator-definitions-instantiatefunctionobject |
| features: [async-iteration] |
| flags: [generated] |
| info: | |
| AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier |
| ( FormalParameters ) { AsyncGeneratorBody } |
| |
| [...] |
| 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, |
| scope, strict). |
| [...] |
| |
| 13.3.3.6 Runtime Semantics: IteratorBindingInitialization |
| |
| SingleNameBinding : BindingIdentifier Initializeropt |
| |
| [...] |
| 6. If Initializer is present and v is undefined, then |
| a. Let defaultValue be the result of evaluating Initializer. |
| b. Let v be GetValue(defaultValue). |
| c. ReturnIfAbrupt(v). |
| |
| 6.2.3.1 GetValue (V) |
| |
| 1. ReturnIfAbrupt(V). |
| 2. If Type(V) is not Reference, return V. |
| 3. Let base be GetBase(V). |
| 4. If IsUnresolvableReference(V), throw a ReferenceError exception. |
| ---*/ |
| |
| |
| async function* f([ x = unresolvableReference ]) { |
| |
| }; |
| |
| assert.throws(ReferenceError, function() { |
| f([]); |
| }); |