// This file was procedurally generated from the following sources: // - src/dstr-binding/obj-ptrn-prop-obj.case // - src/dstr-binding/default/let-stmt.template /*--- description: Object binding pattern with "nested" object binding pattern not using initializer (`let` statement) esid: sec-let-and-const-declarations-runtime-semantics-evaluation features: [destructuring-binding] flags: [generated] info: | LexicalBinding : BindingPattern Initializer 1. Let rhs be the result of evaluating Initializer. 2. Let value be GetValue(rhs). 3. ReturnIfAbrupt(value). 4. Let env be the running execution context's LexicalEnvironment. 5. Return the result of performing BindingInitialization for BindingPattern using value and env as the arguments. 13.3.3.7 Runtime Semantics: KeyedBindingInitialization [...] 3. If Initializer is present and v is undefined, then [...] 4. Return the result of performing BindingInitialization for BindingPattern passing v and environment as arguments. ---*/ let { w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: { x: undefined, z: 7 } }; assert.sameValue(x, undefined); assert.sameValue(y, undefined); assert.sameValue(z, 7); assert.throws(ReferenceError, function() { w; }); reportCompare(0, 0);