NodeNext moduleResolution support

[i0000010]

I'm using esmodules with moduleResolution set to NodeNext. This means relative import paths require explicit file extensions. Is there a way to configure this requirement out of the box?

[wydengyre]

This is also true for node16 module resolution, which is identical. Related issue is here: #1964

I see no reason not to just make explicit file extensions the default. Is there any advantage to not having them?