| // Copyright (C) 2019 Adrian Heine. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| description: In non-strict mode, duplicate LexicallyDeclaredNames in a switch statement's CaseBlock are allowed if they are bound by FunctionDeclarations |
| esid: sec-switch-duplicates-allowed-static-semantics |
| es6id: B.3.3.5 |
| flags: [noStrict] |
| info: | |
| B.3.3.4 Changes to Block Static Semantics: Early Errors |
| |
| For web browser compatibility, that rule is modified with the addition of the **highlighted** text: |
| |
| Block: {StatementList} |
| |
| It is a Syntax Error if the LexicallyDeclaredNames of StatementList contains any duplicate entries, **unless the source code matching this production is not strict mode code and the duplicate entries are only bound by FunctionDeclarations**. |
| |
| |
| B.3.3.5 Changes to switch Statement Static Semantics: Early Errors |
| |
| For web browser compatibility, that rule is modified with the addition of the **highlighted** text: |
| |
| SwitchStatement: switch ( Expression ) CaseBlock |
| |
| It is a Syntax Error if the LexicallyDeclaredNames of CaseBlock contains any duplicate entries, **unless the source code matching this production is not strict mode code and the duplicate entries are only bound by FunctionDeclarations**. |
| ---*/ |
| |
| let x |
| switch (x) { |
| case 1: |
| function a() {} |
| case 2: |
| function a() {} |
| } |