const-ary-ptrn-elision-iter-close.js (1527B)
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-of-const.template 4 /*--- 5 description: The iterator is properly consumed by the destructuring pattern (for-of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [generators, destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( ForDeclaration of AssignmentExpression ) Statement 12 13 [...] 14 3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 15 lexicalBinding, labelSet). 16 17 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 18 19 [...] 20 3. Let destructuring be IsDestructuring of lhs. 21 [...] 22 5. Repeat 23 [...] 24 h. If destructuring is false, then 25 [...] 26 i. Else 27 i. If lhsKind is assignment, then 28 [...] 29 ii. Else if lhsKind is varBinding, then 30 [...] 31 iii. Else, 32 1. Assert: lhsKind is lexicalBinding. 33 2. Assert: lhs is a ForDeclaration. 34 3. Let status be the result of performing BindingInitialization 35 for lhs passing nextValue and iterationEnv as arguments. 36 [...] 37 ---*/ 38 const iter = (function* () { 39 yield; 40 yield; 41 })(); 42 43 44 function fn() { 45 for (const [,] of [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);