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avoid-nested-switches

added in: 1.1.0
style
Pro+

Warns when a switch case body has another switch statement.

Nested switches are difficult to understand because you can easily confuse the cases of an inner switch as belonging to an outer statement.

Example​

❌ Bad:

void func() {
  final str = 'someString';

  switch (str) {
    case 'string':
      {
        // LINT: Avoid nested switches. Try rewriting the code to remove nesting.
        switch (str) {
          case 'another-one':
            {
              break;
            }
        }

        break;
      }

    case 'anotherString':
      {
        break;
      }
  }
}

✅ Good:

void func() {
  final str = 'someString';

  switch (str) {
    case 'string':
      {
        ...

        break;
      }

    case 'anotherString':
      {
        break;
      }
  }
}