tests/cases/compiler/inferSetterParamType.ts(3,9): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. tests/cases/compiler/inferSetterParamType.ts(6,9): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. tests/cases/compiler/inferSetterParamType.ts(12,9): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. tests/cases/compiler/inferSetterParamType.ts(13,16): error TS2322: Type 'number' is not assignable to type 'string'. tests/cases/compiler/inferSetterParamType.ts(15,9): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. ==== tests/cases/compiler/inferSetterParamType.ts (5 errors) ==== class Foo { get bar() { ~~~ !!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. return 0; } set bar(n) { // should not be an error - infer number ~~~ !!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. } } class Foo2 { get bar() { ~~~ !!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. return 0; // should be an error - can't coerce infered return type to match setter annotated type ~ !!! error TS2322: Type 'number' is not assignable to type 'string'. } set bar(n:string) { ~~~ !!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. } }