| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-elision-exhausted.case |
| // - src/dstr-binding/default/async-gen-func-named-expr-dflt.template |
| /*--- |
| description: Elision accepts exhausted iterator (async generator named function expression (default parameter)) |
| esid: sec-asyncgenerator-definitions-evaluation |
| features: [generators, async-iteration] |
| flags: [generated, async] |
| info: | |
| AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier |
| ( FormalParameters ) { AsyncGeneratorBody } |
| |
| [...] |
| 7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, |
| AsyncGeneratorBody, funcEnv, strict). |
| [...] |
| |
| |
| 13.3.3.6 Runtime Semantics: IteratorBindingInitialization |
| |
| ArrayBindingPattern : [ Elision ] |
| |
| 1. Return the result of performing |
| IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord |
| as the argument. |
| |
| 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation |
| |
| Elision : , |
| |
| 1. If iteratorRecord.[[done]] is false, then |
| [...] |
| 2. Return NormalCompletion(empty). |
| |
| ---*/ |
| var iter = function*() {}(); |
| iter.next(); |
| |
| |
| var callCount = 0; |
| var f; |
| f = async function* h([,] = iter) { |
| |
| callCount = callCount + 1; |
| }; |
| |
| f().next().then(() => { |
| assert.sameValue(callCount, 1, 'invoked exactly once'); |
| }).then($DONE, $DONE); |