tests/cases/compiler/noTypeArgumentOnReturnType1.ts(3,9): error TS2314: Generic type 'A' requires 1 type argument(s). ==== tests/cases/compiler/noTypeArgumentOnReturnType1.ts (1 errors) ==== class A{ foo(): A{ ~ !!! error TS2314: Generic type 'A' requires 1 type argument(s). return null; } }