/index.ts(1,8): error TS2834: Relative import paths need explicit file extensions in ECMAScript imports when '--moduleResolution' is 'node16' or 'nodenext'. Consider adding an extension to the import path.


==== /package.json (0 errors) ====
    { "type": "module" }
    
==== /foo.ts (0 errors) ====
    export {};
    
==== /foo/index.ts (0 errors) ====
    export {};
    
==== /index.ts (1 errors) ====
    import "./foo/";
           ~~~~~~~~
!!! error TS2834: Relative import paths need explicit file extensions in ECMAScript imports when '--moduleResolution' is 'node16' or 'nodenext'. Consider adding an extension to the import path.
    