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avoid-redundant-pragma-inline

added in: 1.4.0
warning
🛠
Pro+
preset: recommended

Warns when a @pragma('vm:prefer-inline') annotation has no effect.

The Dart compiler can't inline certain methods, even if they are annotated with @pragma("vm:prefer-inline"). Those include methods with a try block, methods declared async, async*, sync* and certain core library methods.

Example​

❌ Bad:

class SomeClass {
  @pragma('vm:prefer-inline') // LINT: This 'vm:pragma-inline' annotation has no effect. Try removing it.
  Future<void> asyncMethod() async {
    await good();
  }

  @pragma('vm:prefer-inline') // LINT: This 'vm:pragma-inline' annotation has no effect. Try removing it.
  void methodWithTry() {
    try {
      // ...
    } catch (_) {
      print('error');
    }
  }
}

✅ Good:

class SomeClass {
  @pragma('vm:prefer-inline')
  Future<String> good() {
    return Future.value('hello');
  }

  Future<void> asyncMethod() async {
    await good();
  }

  void methodWithTry() {
    try {
      // ...
    } catch (_) {
      print('error');
    }
  }
}

Additional Resources​