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function-always-returns-null

added in: 1.4.0
warning

Warns when a function with nullable return type returns only null.

Example​

❌ Bad:

// LINT
String? function() {
  if (value == 2) {
    // ...
  }

  return null;
}

✅ Good:

String? function() {
  if (value == 2) {
    // ...

    return 'some string';
  }

  return null;
}