built_in_identifier_as_type

The built-in identifier '{0}' can't be used as a type.

The analyzer produces this diagnostic when a built-in identifier is used where a type name is expected.

The following code produces this diagnostic because import can't be used as a type because it's a built-in identifier:

import<int> x = [];

Replace the built-in identifier with the name of a valid type:

List<int> x = [];