const-ary-ptrn-elision-iter-close.js (1561B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elision-iter-close.case 3 // - src/dstr-binding/iter-close/for-const.template 4 /*--- 5 description: The iterator is properly consumed by the destructuring pattern (for statement) 6 esid: sec-for-statement-runtime-semantics-labelledevaluation 7 features: [generators, destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( LexicalDeclaration Expressionopt ; Expressionopt ) Statement 12 13 [...] 14 7. Let forDcl be the result of evaluating LexicalDeclaration. 15 [...] 16 17 LexicalDeclaration : LetOrConst BindingList ; 18 19 1. Let next be the result of evaluating BindingList. 20 2. ReturnIfAbrupt(next). 21 3. Return NormalCompletion(empty). 22 23 BindingList : BindingList , LexicalBinding 24 25 1. Let next be the result of evaluating BindingList. 26 2. ReturnIfAbrupt(next). 27 3. Return the result of evaluating LexicalBinding. 28 29 LexicalBinding : BindingPattern Initializer 30 31 1. Let rhs be the result of evaluating Initializer. 32 2. Let value be GetValue(rhs). 33 3. ReturnIfAbrupt(value). 34 4. Let env be the running execution context’s LexicalEnvironment. 35 5. Return the result of performing BindingInitialization for BindingPattern 36 using value and env as the arguments. 37 ---*/ 38 const iter = (function* () { 39 yield; 40 yield; 41 })(); 42 43 44 function fn() { 45 for (const [,] = iter; ; ) { 46 return; 47 } 48 } 49 50 fn(); 51 52 assert.sameValue(iter.next().done, true, 'iteration occurred as expected'); 53 54 reportCompare(0, 0);