tests/cases/conformance/parser/ecmascript5/ClassDeclarations/parserClassDeclaration7.ts(2,3): error TS1038: A 'declare' modifier cannot be used in an already ambient context.
==== tests/cases/conformance/parser/ecmascript5/ClassDeclarations/parserClassDeclaration7.ts (1 errors) ====
declare module M {
declare class C {
~~~~~~~
!!! error TS1038: A 'declare' modifier cannot be used in an already ambient context.
}