Respect Babel/TS/Webpack/whatever base paths, aliases and externals

[ersinakinci]

I've configured my tsconfig.json with a baseUrl set to ./app/javascript. So I write import { foo } from 'utility' and it imports from ./app/javascript/utility. Dependency Cruiser, however, sees utility as a top-level import and shows me a graph like this:

It would be really great to see Dependency Cruiser follow Babel/TS/Webpack/whatever's config for base paths and show imports like utility coming from the right place. Here's a non-exhaustive list of details that would need to be addressed:

• The import logic is intelligent enough to distinguish between utility, which is in ./app/javascript/utility, and react, which is in ./node_modules/react.
• tsconfig.json supports baseUrl as well as specific path aliases using paths (e.g., @utility --> ./app/javascript/utility).
• jsconfig.json has options similar to tsconfig.json but for VS Code (doesn't depend on TS).
• Babel's popular module-resolver plugin has root and alias config options.
• Webpack has its own resolve options.
• There are all kinds of plugins for Babel/TS/Webpack/whatever that allow for "syncing" path settings from one tool to the other (here's a popular example)
• Edge case: handling externals
• Parcel, Rollup, etc.

Perhaps the easiest way to handle the myriad cases is to simply create baseUrl, paths and externals settings in the plugin's config and allow users to manually specify the base path, aliases and any external module declarations.

One last consideration: if you let users declare the base path, they will probably need to give an absolute path since VS Code could be launched from whatever pwd. Not sure whether there's a way around that.

[N0tExisting]

This is also a problem with just importing ts files, as the file-extension is not included

[a931528933]

hope to implement，This is a massive problem during i use this。

[rfgonzalezweb]

I'm having this issue too with basepaths and aliases, but this is still a great extension :+1: