ary-ptrn-elem-ary-val-null.js (1388B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-ary-val-null.case 3 // - src/dstr-binding/error/let-stmt.template 4 /*--- 5 description: Nested array destructuring with a null value (`let` statement) 6 esid: sec-let-and-const-declarations-runtime-semantics-evaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 LexicalBinding : BindingPattern Initializer 11 12 1. Let rhs be the result of evaluating Initializer. 13 2. Let value be GetValue(rhs). 14 3. ReturnIfAbrupt(value). 15 4. Let env be the running execution context's LexicalEnvironment. 16 5. Return the result of performing BindingInitialization for BindingPattern 17 using value and env as the arguments. 18 19 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 20 21 BindingElement : BindingPattern Initializeropt 22 23 1. If iteratorRecord.[[done]] is false, then 24 [...] 25 e. Else 26 i. Let v be IteratorValue(next). 27 [...] 28 4. Return the result of performing BindingInitialization of BindingPattern 29 with v and environment as the arguments. 30 31 13.3.3.5 Runtime Semantics: BindingInitialization 32 33 BindingPattern : ArrayBindingPattern 34 35 1. Let iterator be GetIterator(value). 36 2. ReturnIfAbrupt(iterator). 37 ---*/ 38 39 assert.throws(TypeError, function() { 40 let [[x]] = [null]; 41 }); 42 43 reportCompare(0, 0);