tests/cases/conformance/parser/ecmascript5/ClassDeclarations/parserClass1.ts(1,18): error TS1148: Cannot compile external modules unless the '--module' flag is provided.
tests/cases/conformance/parser/ecmascript5/ClassDeclarations/parserClass1.ts(1,40): error TS2304: Cannot find name 'ILogger'.


==== tests/cases/conformance/parser/ecmascript5/ClassDeclarations/parserClass1.ts (2 errors) ====
        export class NullLogger implements ILogger {
                     ~~~~~~~~~~
!!! error TS1148: Cannot compile external modules unless the '--module' flag is provided.
                                           ~~~~~~~
!!! error TS2304: Cannot find name 'ILogger'.
            public information(): boolean { return false; }
            public debug(): boolean { return false; }
            public warning(): boolean { return false; }
            public error(): boolean { return false; }
            public fatal(): boolean { return false; }
            public log(s: string): void {
            }
        }