dflt-obj-ptrn-prop-ary-value-null.js (1158B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-ary-value-null.case 3 // - src/dstr-binding/error/async-gen-func-expr-dflt.template 4 /*--- 5 description: Object binding pattern with "nested" array binding pattern taking the `null` value (async generator function expression (default parameter)) 6 esid: sec-asyncgenerator-definitions-evaluation 7 features: [async-iteration] 8 flags: [generated] 9 info: | 10 AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) { 11 AsyncGeneratorBody } 12 13 [...] 14 3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, 15 AsyncGeneratorBody, scope, strict). 16 [...] 17 18 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 19 20 [...] 21 3. If Initializer is present and v is undefined, then 22 [...] 23 4. Return the result of performing BindingInitialization for BindingPattern 24 passing v and environment as arguments. 25 ---*/ 26 27 28 var f = async function*({ w: [x, y, z] = [4, 5, 6] } = { w: null }) { 29 30 }; 31 32 assert.throws(TypeError, function() { 33 f(); 34 }); 35 36 reportCompare(0, 0);