error TS5107: Option 'module=System' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.


!!! error TS5107: Option 'module=System' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
==== usingDeclarationsWithLegacyClassDecorators.5.ts (0 errors) ====
    export {};
    
    declare var dec: any;
    
    using before = null;
    
    @dec
    class C {
    }
    
    export { C };