Snowpack: Support config the path of modules

[wenyanqi]

I hope snowpack can support the config like resolve.modules in webpack.

So, when i config path './src', I can write

import A from './src/component/A';

instand of

import A from 'component/A';

And @FredKSchott , I'm glad to create a PR myself if make sure this feature should be support.

[Akimyou]

Look like resolvealias: https://webpack.js.org/configuration/resolve/#resolvealias.
But in snowpack, we have different way to do it.
Just define an mount scripts: "mount:@/": "mount @/ --to /_dist_", then all import from '@/' will be mapped.
Snowpack don't care about the deps in file content. It just send it to broswer that broswer to handle it.

[Jonesy]

It doesn't seem to acknowledge mount paths when running $ snowpack build though, using src/App.js or src/App.css will throw and error with the Webpack plugin. I can confirm using relative paths works.

  [error] ./_dist_/App.js
  Module not found: Error: Can't resolve '/_dist_/App.css' in '/Users/user/Sites/build-test/.build/_dist_'
  resolve '/_dist_/App.css' in '/Users/user/Sites/build-test/.build/_dist_'

I can make this into a new issue if it's not relevant to this ticket.

[Akimyou]

@Jonesy , can U give me a reproduction repo ？

[Jonesy]

@Akimyou You bet, here you go https://github.com/Jonesy/snowpack-mount-build-error. I get the error with snowpack build and snowpack build --bundle. Without webpack it builds fine. I also tried adding the alias to webpack manually using extendConfig but nothing seems to take.

[FredKSchott]

Hey all, we're planning some big config improvements for Snowpack v2.7, including an explicit alias config for exactly what you're describing. See PR #603 for implementation.