let-obj-ptrn-prop-id-init.js (1715B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-id-init.case 3 // - src/dstr-binding/default/for-of-let.template 4 /*--- 5 description: Binding as specified via property name, identifier, and initializer (for-of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [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 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 39 40 SingleNameBinding : BindingIdentifier Initializeropt 41 42 [...] 43 8. Return InitializeReferencedBinding(lhs, v). 44 ---*/ 45 46 var iterCount = 0; 47 48 for (let { x: y = 33 } of [{ }]) { 49 assert.sameValue(y, 33); 50 assert.throws(ReferenceError, function() { 51 x; 52 }); 53 54 iterCount += 1; 55 } 56 57 assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); 58 59 reportCompare(0, 0);