// This file was procedurally generated from the following sources: // - src/function-forms/dflt-params-ref-later.case // - src/function-forms/error/async-gen-func-decl.template /*--- description: Referencing a parameter that occurs later in the ParameterList (async generator function declaration) esid: sec-asyncgenerator-definitions-instantiatefunctionobject features: [default-parameters, async-iteration] flags: [generated] info: | AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { AsyncGeneratorBody } [...] 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, scope, strict). [...] 14.1.19 Runtime Semantics: IteratorBindingInitialization FormalsList : FormalsList , FormalParameter 1. Let status be the result of performing IteratorBindingInitialization for FormalsList using iteratorRecord and environment as the arguments. 2. ReturnIfAbrupt(status). 3. Return the result of performing IteratorBindingInitialization for FormalParameter using iteratorRecord and environment as the arguments. ---*/ var x = 0; var callCount = 0; async function* f(x = y, y) { callCount = callCount + 1; } assert.throws(ReferenceError, function() { f(); }); assert.sameValue(callCount, 0, 'generator function body not evaluated'); reportCompare(0, 0);