let-ary-ptrn-elem-obj-val-null.js (1973B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-obj-val-null.case 3 // - src/dstr-binding/error/for-let.template 4 /*--- 5 description: Nested object destructuring with a null value (for statement) 6 esid: sec-for-statement-runtime-semantics-labelledevaluation 7 features: [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 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 39 40 BindingElement : BindingPattern Initializeropt 41 42 1. If iteratorRecord.[[done]] is false, then 43 [...] 44 e. Else 45 i. Let v be IteratorValue(next). 46 [...] 47 4. Return the result of performing BindingInitialization of BindingPattern 48 with v and environment as the arguments. 49 50 13.3.3.5 Runtime Semantics: BindingInitialization 51 52 BindingPattern : ObjectBindingPattern 53 54 1. Let valid be RequireObjectCoercible(value). 55 2. ReturnIfAbrupt(valid). 56 ---*/ 57 58 assert.throws(TypeError, function() { 59 for (let [{ x }] = [null]; ; ) { 60 return; 61 } 62 }); 63 64 reportCompare(0, 0);