Source code
Revision control
Copy as Markdown
Other Tools
// This file was procedurally generated from the following sources:
// - src/annex-b-fns/eval-global-block-scoping.case
// - src/annex-b-fns/eval-global/indirect-switch-dflt.template
/*---
description: A block-scoped binding is created (Funtion declaration in the `default` clause of a `switch` statement in eval code in the global scope)
esid: sec-web-compat-evaldeclarationinstantiation
flags: [generated, noStrict]
info: |
13.2.14 Runtime Semantics: BlockDeclarationInstantiation
[...]
4. For each element d in declarations do
a. For each element dn of the BoundNames of d do
i. If IsConstantDeclaration of d is true, then
[...]
ii. Else,
2. Perform ! envRec.CreateMutableBinding(dn, false).
b. If d is a GeneratorDeclaration production or a FunctionDeclaration
production, then
i. Let fn be the sole element of the BoundNames of d.
ii. Let fo be the result of performing InstantiateFunctionObject for
d with argument env.
iii. Perform envRec.InitializeBinding(fn, fo).
---*/
var initialBV, currentBV;
(0,eval)(
'switch (1) {' +
' default:' +
' function f() { initialBV = f; f = 123; currentBV = f; return "decl"; }' +
'}\
'
);
f();
assert.sameValue(
initialBV(),
'decl',
'Block-scoped binding value is function object at execution time'
);
assert.sameValue(currentBV, 123, 'Block-scoped binding is mutable');
assert.sameValue(
f(),
'decl',
'Block-scoped binding is independent of outer var-scoped binding'
);
reportCompare(0, 0);