avoid-generics-shadowing

added in: 1.7.0

warning

Pro+

preset: recommended

Warns when a generic type shadows and existing top-level (class, mixin, typedef or enum) declaration.

Shadowing existing declarations can be extremely confusing when it comes to parameters or variables annotated with a generic type that looks close to a class name.

Example

❌ Bad:

class SomeClass {
  void method<MyEnum>(MyEnum p) {} // LINT

  AnotherClass anotherMethod<AnotherClass>() {} // LINT
}

class AnotherClass {}

enum MyEnum { first }

✅ Good:

class SomeClass {
  void method<T>(T p) {}

  R anotherMethod<R>() {}
}

class AnotherClass {}

enum MyEnum { first }