tests/cases/compiler/genericTypeUsedWithoutTypeArguments3.ts(2,26): error TS2314: Generic type 'Foo' requires 1 type argument(s). ==== tests/cases/compiler/genericTypeUsedWithoutTypeArguments3.ts (1 errors) ==== interface Foo { } interface Bar extends Foo { } ~~~ !!! error TS2314: Generic type 'Foo' requires 1 type argument(s).