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- /**
- * @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",
- });
- }
- },
- };
- },
- };
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