dflt-ary-ptrn-rest-obj-prop-id.js (1605B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/ary-ptrn-rest-obj-prop-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 let length = "outer"; 34 35 36 var callCount = 0; 37 var f; 38 f = async function*([...{ 0: v, 1: w, 2: x, 3: y, length: z }] = [7, 8, 9]) { 39 assert.sameValue(v, 7); 40 assert.sameValue(w, 8); 41 assert.sameValue(x, 9); 42 assert.sameValue(y, undefined); 43 assert.sameValue(z, 3); 44 45 assert.sameValue(length, "outer", "the length prop is not set as a binding name"); 46 callCount = callCount + 1; 47 }; 48 49 f().next().then(() => { 50 assert.sameValue(callCount, 1, 'invoked exactly once'); 51 }).then($DONE, $DONE);