tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractCrashedOnce.ts(8,5): error TS1003: Identifier expected. ==== tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractCrashedOnce.ts (1 errors) ==== abstract class foo { protected abstract test(); } class bar extends foo { test() { this. } ~ !!! error TS1003: Identifier expected. } var x = new bar();