var-obj-ptrn-rest-skip-non-enumerable.js (1734B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case 3 // - src/dstr-binding/default/for-of-var.template 4 /*--- 5 description: Rest object doesn't contain non-enumerable properties (for-of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [object-rest, destructuring-binding] 8 flags: [generated] 9 includes: [propertyHelper.js] 10 info: | 11 IterationStatement : 12 for ( var ForBinding of AssignmentExpression ) Statement 13 14 [...] 15 3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 16 varBinding, labelSet). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 3. Let destructuring be IsDestructuring of lhs. 22 [...] 23 5. Repeat 24 [...] 25 h. If destructuring is false, then 26 [...] 27 i. Else 28 i. If lhsKind is assignment, then 29 [...] 30 ii. Else if lhsKind is varBinding, then 31 1. Assert: lhs is a ForBinding. 32 2. Let status be the result of performing BindingInitialization 33 for lhs passing nextValue and undefined as the arguments. 34 [...] 35 ---*/ 36 var o = {a: 3, b: 4}; 37 Object.defineProperty(o, "x", { value: 4, enumerable: false }); 38 39 var iterCount = 0; 40 41 for (var {...rest} of [o]) { 42 assert.sameValue(rest.x, undefined); 43 44 verifyProperty(rest, "a", { 45 enumerable: true, 46 writable: true, 47 configurable: true, 48 value: 3 49 }); 50 51 verifyProperty(rest, "b", { 52 enumerable: true, 53 writable: true, 54 configurable: true, 55 value: 4 56 }); 57 58 iterCount += 1; 59 } 60 61 assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); 62 63 reportCompare(0, 0);