Source code
Revision control
Copy as Markdown
Other Tools
// This file was procedurally generated from the following sources:
// - src/annex-b-fns/eval-func-init.case
// - src/annex-b-fns/eval-func/direct-if-decl-else-decl-b.template
/*---
description: Variable binding is initialized to `undefined` in outer scope (IfStatement with a declaration in both statement positions in eval code)
esid: sec-functiondeclarations-in-ifstatement-statement-clauses
flags: [generated, noStrict]
info: |
The following rules for IfStatement augment those in 13.6:
IfStatement[Yield, Return]:
if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else Statement[?Yield, ?Return]
if ( Expression[In, ?Yield] ) Statement[?Yield, ?Return] else FunctionDeclaration[?Yield]
if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else FunctionDeclaration[?Yield]
if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield]
B.3.3.3 Changes to EvalDeclarationInstantiation
[...]
a. If declaredFunctionOrVarNames does not contain F, then
i. If varEnvRec is a global Environment Record, then
[...]
ii. Else,
i. Let bindingExists be varEnvRec.HasBinding(F).
ii. If bindingExists is false, then
i. Perform ! varEnvRec.CreateMutableBinding(F, true).
ii. Perform ! varEnvRec.InitializeBinding(F, undefined).
[...]
---*/
var init, changed;
(function() {
eval(
'init = f;\
f = 123;\
changed = f;if (false) function _f() {} else function f() { }'
);
}());
assert.sameValue(init, undefined, 'binding is initialized to `undefined`');
assert.sameValue(changed, 123, 'binding is mutable');
assert.throws(ReferenceError, function() {
f;
}, 'global binding is not created');
reportCompare(0, 0);