mirror of https://github.com/tc39/test262.git
46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/annex-b-fns/global-block-scoping.case
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// - src/annex-b-fns/global/block.template
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/*---
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description: A block-scoped binding is created (Block statement in the global scope containing a function declaration)
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esid: sec-web-compat-globaldeclarationinstantiation
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es6id: B.3.3.2
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flags: [generated, noStrict]
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info: >
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13.2.14 Runtime Semantics: BlockDeclarationInstantiation
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[...]
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4. For each element d in declarations do
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a. For each element dn of the BoundNames of d do
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i. If IsConstantDeclaration of d is true, then
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[...]
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ii. Else,
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2. Perform ! envRec.CreateMutableBinding(dn, false).
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b. If d is a GeneratorDeclaration production or a FunctionDeclaration
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production, then
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i. Let fn be the sole element of the BoundNames of d.
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ii. Let fo be the result of performing InstantiateFunctionObject for
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d with argument env.
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iii. Perform envRec.InitializeBinding(fn, fo).
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---*/
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var initialBV, currentBV;
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{
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function f() { initialBV = f; f = 123; currentBV = f; return 'decl'; }
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}
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f();
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assert.sameValue(
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initialBV(),
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'decl',
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'Block-scoped binding value is function object at execution time'
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);
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assert.sameValue(currentBV, 123, 'Block-scoped binding is mutable');
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assert.sameValue(
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f(),
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'decl',
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'Block-scoped binding is independent of outer var-scoped binding'
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);
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