computedPropertyNamesDeclarationEmit4_ES6.ts(2,5): error TS1170: A computed property name in a type literal must refer to an expression whose type is a literal type or a 'unique symbol' type.


==== computedPropertyNamesDeclarationEmit4_ES6.ts (1 errors) ====
    var v: {
        ["" + ""](): void;
        ~~~~~~~~~
!!! error TS1170: A computed property name in a type literal must refer to an expression whose type is a literal type or a 'unique symbol' type.
    }