tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts(1,12): error TS2300: Duplicate identifier 'T'. tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts(2,16): error TS2300: Duplicate identifier 'T'. tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts(4,16): error TS2300: Duplicate identifier 'T'. tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts(5,20): error TS2300: Duplicate identifier 'T'. tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts(7,15): error TS2300: Duplicate identifier 'T'. tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts(8,19): error TS2300: Duplicate identifier 'T'. ==== tests/cases/conformance/types/typeParameters/typeParameterLists/typesWithDuplicateTypeParameters.ts (6 errors) ==== class C { } ~ !!! error TS2300: Duplicate identifier 'T'. class C2 { } ~ !!! error TS2300: Duplicate identifier 'T'. interface I { } ~ !!! error TS2300: Duplicate identifier 'T'. interface I2 { } ~ !!! error TS2300: Duplicate identifier 'T'. function f() { } ~ !!! error TS2300: Duplicate identifier 'T'. function f2() { } ~ !!! error TS2300: Duplicate identifier 'T'.