prefer-explicit-type-arguments

added in: 1.11.0

warning

🛠

Pro+

Warns when a method that accepts type arguments has no arguments and no type arguments passed.

warning

This rule is not compatible with avoid-inferrable-type-arguments.

Example

❌ Bad:

class _MyAppState extends State<MyApp> {
  late final A a;
  late final B b;

  @override
  void initState() {
    super.initState();

    a = context.read(); // LINT: Try adding type arguments to improve readability and avoid potential mistakes during a refactoring.
    b = context.read(); // LINT: Try adding type arguments to improve readability and avoid potential mistakes during a refactoring.
  }

  @override
  Widget build(BuildContext context) {
    return Widget();
  }
}

✅ Good:

class _MyAppState extends State<MyApp> {
  late final A a;
  late final B b;

  @override
  void initState() {
    super.initState();

    a = context.read<A>(); // Correct, explicit types
    b = context.read<B>();
  }

  @override
  Widget build(BuildContext context) {
    return Widget();
  }
}

Example​

Example