mirror of https://github.com/tc39/test262.git
36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-id-init-undef.case
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// - src/dstr-binding/default/const-stmt.template
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/*---
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description: Destructuring initializer with an undefined value (`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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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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SingleNameBinding : BindingIdentifier Initializeropt
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[...]
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6. 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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[...]
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7. If environment is undefined, return PutValue(lhs, v).
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8. Return InitializeReferencedBinding(lhs, v).
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---*/
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const [x = 23] = [undefined];
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assert.sameValue(x, 23);
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