Feature request! Could this automatically figure out which country the package is from, then impose the at-that-time current tariff? And maybe work out whether the dev is in USA or outside.

A best effort is fine! (Actually, mid effort is probably better; more true to the source)

I was hoping this would be a way of penalising developers who add ridiculous numbers of dependencies.

I am going to be so much more productive now that I'm incentivized to code everything from scratch.

The issue tracker + pull requests are also worth browsing: https://github.com/hxu296/tariff/issues

There should be a method to impose base tarrifs of 10% by default on all packages. Even if you are not importing non-existent packages from the penguin Islands.