#no-duplicate-case

#Configuration

import { defineConfig, js } from '@rslint/core';

export default defineConfig([
  js.configs.recommended,
  {
    rules: {
      'no-duplicate-case': 'error',
    },
  },
]);

#Rule Details

Disallow duplicate case labels in switch statements. Duplicate case labels indicate a probable mistake.

Examples of incorrect code for this rule:

switch (a) {
  case 1:
    break;
  case 1:
    break;
}

switch (a) {
  case 'a':
    break;
  case 'a':
    break;
}

Examples of correct code for this rule:

switch (a) {
  case 1:
    break;
  case 2:
    break;
}

switch (a) {
  case 'a':
    break;
  case 'b':
    break;
}

#Original Documentation

https://eslint.org/docs/latest/rules/no-duplicate-case