I know I sound like a broken record at this point, but wouldn't it be helpful if Deno just built something like this in automatically to make those import maps given a lockfile:

https://www.npmjs.com/package/@import-maps/generate/v/0.1.0

This way you'd get both the benefits of web standards compliance with the generated explicit import maps, and backward compatibility and ease-of-migration for npm/yarn users.