ary-ptrn-elem-id-init-undef.js (1186B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-id-init-undef.case 3 // - src/dstr-binding/default/try.template 4 /*--- 5 description: Destructuring initializer with an undefined value (try statement) 6 esid: sec-runtime-semantics-catchclauseevaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 Catch : catch ( CatchParameter ) Block 11 12 [...] 13 5. Let status be the result of performing BindingInitialization for 14 CatchParameter passing thrownValue and catchEnv as arguments. 15 [...] 16 17 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 18 19 SingleNameBinding : BindingIdentifier Initializeropt 20 21 [...] 22 6. If Initializer is present and v is undefined, then 23 a. Let defaultValue be the result of evaluating Initializer. 24 b. Let v be GetValue(defaultValue). 25 [...] 26 7. If environment is undefined, return PutValue(lhs, v). 27 8. Return InitializeReferencedBinding(lhs, v). 28 ---*/ 29 30 var ranCatch = false; 31 32 try { 33 throw [undefined]; 34 } catch ([x = 23]) { 35 assert.sameValue(x, 23); 36 ranCatch = true; 37 } 38 39 assert(ranCatch, 'executed `catch` block'); 40 41 reportCompare(0, 0);