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no-equal-switch-case

added in: 1.1.0
warning
Pro+
preset: recommended

Warns when a switch has cases with equal bodies.

Example​

❌ Bad:

void main() {
  final str = '123';

  switch (str) {
    case '1':
      {
        print('hello world');
        break;
      }

    case '2':
      {
        print('same');
        break;
      }

    // LINT: This switch statement already has a 'case' with the same body. Try combining these cases.
    case '3':
      {
        print('same');
        break;
      }
  }
}

✅ Good:

void main() {
  final str = '123';

  switch (str) {
    case '1':
      {
        print('hello world');
        break;
      }

    case '2':
      {
        print('same');
        break;
      }
  }
}

Additional Resources​