dot_shorthand_missing_context

A dot shorthand can't be used where there is no context type.

The analyzer produces this diagnostic when a dot shorthand is used where there is no context type.

The following code produces this diagnostic because there is no context type for the expression .a:

void f() {
  var e = .a;
  print(e);
}

enum E {a, b}

If you want to use a dot shorthand, then add a context type, which in this example means adding the explicit type E to the local variable:

void f() {
  E e = .a;
  print(e);
}

enum E {a, b}

If you don't want to add a context type, then specify the name of the type containing the member being referenced, which in this case is E:

void f() {
  var e = E.a;
  print(e);
}

enum E {a, b}