mirror of https://github.com/tc39/test262.git
40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/obj-ptrn-prop-ary-init.case
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// - src/dstr-binding/default/const-stmt.template
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/*---
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description: Object binding pattern with "nested" array binding pattern using initializer (`const` statement)
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esid: sec-let-and-const-declarations-runtime-semantics-evaluation
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es6id: 13.3.1.4
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features: [destructuring-binding]
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flags: [generated]
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info: |
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LexicalBinding : BindingPattern Initializer
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1. Let rhs be the result of evaluating Initializer.
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2. Let value be GetValue(rhs).
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3. ReturnIfAbrupt(value).
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4. Let env be the running execution context's LexicalEnvironment.
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5. Return the result of performing BindingInitialization for BindingPattern
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using value and env as the arguments.
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13.3.3.7 Runtime Semantics: KeyedBindingInitialization
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[...]
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3. If Initializer is present and v is undefined, then
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a. Let defaultValue be the result of evaluating Initializer.
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b. Let v be GetValue(defaultValue).
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c. ReturnIfAbrupt(v).
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4. Return the result of performing BindingInitialization for BindingPattern
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passing v and environment as arguments.
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---*/
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const { w: [x, y, z] = [4, 5, 6] } = {};
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assert.sameValue(x, 4);
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assert.sameValue(y, 5);
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assert.sameValue(z, 6);
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assert.throws(ReferenceError, function() {
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w;
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});
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