error TS5107: Option 'target=ES5' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
ES5For-ofTypeCheck14.ts(2,17): error TS2802: Type 'Set<number>' can only be iterated through when using the '--downlevelIteration' flag or with a '--target' of 'es2015' or higher.


!!! error TS5107: Option 'target=ES5' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
==== ES5For-ofTypeCheck14.ts (1 errors) ====
    declare var union: string | Set<number>
    for (const e of union) { }
                    ~~~~~
!!! error TS2802: Type 'Set<number>' can only be iterated through when using the '--downlevelIteration' flag or with a '--target' of 'es2015' or higher.