Support tsconfig.json paths and baseUrl automatically

It would be cool if the plugin could automatically detect tsconfig.json to see which first party imports you have, such as web/components/foo. Then those could be moved into the “absolute imports” group, instead of ending up in the (third party) “packages” group.

One idea is to use https://github.com/dividab/tsconfig-paths. Need to check that it actually supports baseUrl, though.

Another idea is to try to require("typescript"). If it’s there, use it to resolve the config.

The initial idea comes from: https://github.com/lydell/eslint-plugin-simple-import-sort/issues/18#issuecomment-532097832

Edit: This is a light-weight package that can do the hard work for us: https://github.com/privatenumber/get-tsconfig

[israelKusayev]

Yesss great idea, works perfect

const fs = require('fs');

const foldersUnderSrc = fs
  .readdirSync('src', { withFileTypes: true })
  .filter(dirent => dirent.isDirectory())
  .map(dirent => dirent.name);

and then

// Absolute imports and Relative imports.
[`^(${foldersUnderSrc.join('|')})(/.*|$)`, '^\\.'],

You can see here the config file https://github.com/reflexology/client-V2/blob/master/.eslintrc.js

[lydell]

Yes it does! By showing me how complex that would be, that would motivate adding the automatic tsconfig.json thing.