tests/cases/compiler/quotedModuleNameMustBeAmbient.ts(1,8): error TS1035: Only ambient modules can use quoted names.


==== tests/cases/compiler/quotedModuleNameMustBeAmbient.ts (1 errors) ====
    module 'M' {}
           ~~~
!!! error TS1035: Only ambient modules can use quoted names.
    
    declare module 'M2' {}