expose a `defineConfig` API to use a `pkgroll.config.js` configuration file

[error-four-o-four]

Hey there,

I was wondering if you'd be interested in the following feature

Feature request

as the title suggests the user could create a pkgroll.config.js configuration file in the root of the repository, which is loaded and parsed by the cli. Similar to other bundlers one could expose a defineConfig function to ensure type safety

Motivations

This feature could improve DX in the (rare) case the user passes multiple flags to the cli

I'd be willing to work on this feature but I don't know if I'll be able to so in the near future

[privatenumber]

The convenience of pkgroll is that it doesn't have a config file. Behind the scenes, it parses the package.json so inputs aren't re-declared, and uses that to configure Rollup.

I do see merit in making the build more customizable though. I have plans to expose utils so people can use their own Rollup config that's pre-configured by pkgroll.

[Vija02]

Would really love for this to happen. I've hit this wall a few times now where there are specific plugins that I needed which aren't included in pkgroll. Eg: #68 and rollup-plugin-node-polyfills.

Everything else is great except for this. The problem is that there's no way to go around it, so I'm forced to use a different bundler just because of what could've been a few lines of changes.

[hellozyemlya]

Is there any progress on exposing rollup configuration to end-user?