tests/cases/compiler/genericArrayWithoutTypeAnnotation.ts(4,24): error TS2314: Generic type 'IFoo' requires 1 type argument(s). ==== tests/cases/compiler/genericArrayWithoutTypeAnnotation.ts (1 errors) ==== interface IFoo{ } class Bar { public getBar(foo: IFoo[]) { ~~~~ !!! error TS2314: Generic type 'IFoo' requires 1 type argument(s). } }