tests/cases/conformance/parser/ecmascript6/ComputedPropertyNames/parserComputedPropertyName22.ts(2,5): error TS1166: A computed property name in a class property declaration must directly refer to a built-in symbol. tests/cases/conformance/parser/ecmascript6/ComputedPropertyNames/parserComputedPropertyName22.ts(2,6): error TS2304: Cannot find name 'e'. ==== tests/cases/conformance/parser/ecmascript6/ComputedPropertyNames/parserComputedPropertyName22.ts (2 errors) ==== declare class C { [e]: number ~~~ !!! error TS1166: A computed property name in a class property declaration must directly refer to a built-in symbol. ~ !!! error TS2304: Cannot find name 'e'. }