dflt-ary-ptrn-rest-obj-id.js (1358B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/ary-ptrn-rest-obj-id.case 4 // - src/dstr-binding/default/async-gen-func-expr-dflt.template 5 /*--- 6 description: Rest element containing an object binding pattern (async generator function expression (default parameter)) 7 esid: sec-asyncgenerator-definitions-evaluation 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) { 12 AsyncGeneratorBody } 13 14 [...] 15 3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, 16 AsyncGeneratorBody, scope, strict). 17 [...] 18 19 20 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 21 22 BindingRestElement : ... BindingPattern 23 24 1. Let A be ArrayCreate(0). 25 [...] 26 3. Repeat 27 [...] 28 b. If iteratorRecord.[[done]] is true, then 29 i. Return the result of performing BindingInitialization of 30 BindingPattern with A and environment as the arguments. 31 [...] 32 ---*/ 33 34 35 var callCount = 0; 36 var f; 37 f = async function*([...{ length }] = [1, 2, 3]) { 38 assert.sameValue(length, 3); 39 callCount = callCount + 1; 40 }; 41 42 f().next().then(() => { 43 assert.sameValue(callCount, 1, 'invoked exactly once'); 44 }).then($DONE, $DONE);