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eb39fafa DC |
1 | /** |
2 | * @fileoverview Rule to enforce default clauses in switch statements to be last | |
3 | * @author Milos Djermanovic | |
4 | */ | |
5 | ||
6 | "use strict"; | |
7 | ||
8 | //------------------------------------------------------------------------------ | |
9 | // Rule Definition | |
10 | //------------------------------------------------------------------------------ | |
11 | ||
12 | module.exports = { | |
13 | meta: { | |
14 | type: "suggestion", | |
15 | ||
16 | docs: { | |
17 | description: "enforce default clauses in switch statements to be last", | |
eb39fafa DC |
18 | recommended: false, |
19 | url: "https://eslint.org/docs/rules/default-case-last" | |
20 | }, | |
21 | ||
22 | schema: [], | |
23 | ||
24 | messages: { | |
25 | notLast: "Default clause should be the last clause." | |
26 | } | |
27 | }, | |
28 | ||
29 | create(context) { | |
30 | return { | |
31 | SwitchStatement(node) { | |
32 | const cases = node.cases, | |
33 | indexOfDefault = cases.findIndex(c => c.test === null); | |
34 | ||
35 | if (indexOfDefault !== -1 && indexOfDefault !== cases.length - 1) { | |
36 | const defaultClause = cases[indexOfDefault]; | |
37 | ||
38 | context.report({ node: defaultClause, messageId: "notLast" }); | |
39 | } | |
40 | } | |
41 | }; | |
42 | } | |
43 | }; |