Spaces:
Runtime error
Runtime error
/** | |
* @fileoverview Rule to enforce default clauses in switch statements to be last | |
* @author Milos Djermanovic | |
*/ | |
; | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
module.exports = { | |
meta: { | |
type: "suggestion", | |
docs: { | |
description: "enforce default clauses in switch statements to be last", | |
category: "Best Practices", | |
recommended: false, | |
url: "https://eslint.org/docs/rules/default-case-last" | |
}, | |
schema: [], | |
messages: { | |
notLast: "Default clause should be the last clause." | |
} | |
}, | |
create(context) { | |
return { | |
SwitchStatement(node) { | |
const cases = node.cases, | |
indexOfDefault = cases.findIndex(c => c.test === null); | |
if (indexOfDefault !== -1 && indexOfDefault !== cases.length - 1) { | |
const defaultClause = cases[indexOfDefault]; | |
context.report({ node: defaultClause, messageId: "notLast" }); | |
} | |
} | |
}; | |
} | |
}; | |