default-case-last.jsā¢1.1 kB
/**
* @fileoverview Rule to enforce `default` clauses in `switch` statements to be last
* @author Milos Djermanovic
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../types').Rule.RuleModule} */
module.exports = {
meta: {
type: "suggestion",
docs: {
description:
"Enforce `default` clauses in `switch` statements to be last",
recommended: false,
url: "https://eslint.org/docs/latest/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",
});
}
},
};
},
};