[mhagemeister]

Author here.

Good point. Agree that the ideal scenario would be that the end user (or the tools they use) have the final say in which polyfills to load. It's a bit of a bummer that they are shipped as part of npm packages without an easy way to get rid of them.

I wonder if our industry will move to publishing the original source files to npm in the long run. Only the last piece of the chain, the developer using these dependencies, knows what their target environments are. So the bundler could then downlevel or polyfill the code for the specified targets.

[bsimpson]

I've always been kind of surprised that original sources aren't part of the NPM culture. For a long time, I included "typescript:main" in my package.jsons and configured my tools to prefer that to "main" (and now "module").