var-obj-ptrn-prop-id-init-unresolvable.js (1838B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case 3 // - src/dstr-binding/error/for-of-var.template 4 /*--- 5 description: Destructuring initializer is an unresolvable reference (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 ( var ForBinding of AssignmentExpression ) Statement 12 13 [...] 14 3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 15 varBinding, 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 1. Assert: lhs is a ForBinding. 31 2. Let status be the result of performing BindingInitialization 32 for lhs passing nextValue and undefined as the arguments. 33 [...] 34 35 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 36 37 BindingElement : BindingPattern Initializeropt 38 39 [...] 40 3. If Initializer is present and v is undefined, then 41 a. Let defaultValue be the result of evaluating Initializer. 42 b. Let v be GetValue(defaultValue). 43 c. ReturnIfAbrupt(v). 44 45 6.2.3.1 GetValue (V) 46 47 1. ReturnIfAbrupt(V). 48 2. If Type(V) is not Reference, return V. 49 3. Let base be GetBase(V). 50 4. If IsUnresolvableReference(V), throw a ReferenceError exception. 51 ---*/ 52 53 assert.throws(ReferenceError, function() { 54 for (var { x: y = unresolvableReference } of [{}]) { 55 return; 56 } 57 }); 58 59 reportCompare(0, 0);