Code formatting

We’re missing some developer experience niceties due to our rearrangement of packages.

• Linting only works in the @seeds/ui package, and now we’ve moved code out of it that’s not being linted
• Prettier used to work in this project, but it’s now failing
• When you alt/command + click (or whatever your “jump to definition” shortcut is) on an import symbol that crosses monorepo package boundaries (e.g. something from @seeds/models), you’re brought to the compiled declaration file, not the source .ts file
• We’re not yet taking advantage of TypeScript project references, which allows for faster and better incremental builds

We’ll fix all of these issues in this section.

Formatting

Prettier is unhappy.

sh
pnpm dlx prettier --write packages/*/src/**/*
> [error] Cannot find package 'prettier-plugin-svelte' ...

If you use the prettier vscode extension in vscode, cursor or a similar environment, it may have been erroring and trying to get your attention.

This is symptomatic of us still having “project wide” tooling installed in individual monorepo packages. In this case, we have a prettier plugin for svelte, and it’s installed in the @seeds/ui package and thus not being picked up by the prettier command and the root-level .prettierrc.

Let’s fix that by pulling prettier up into the root package.json

/package.json

json
{
  "devDependencies": {
    "prettier": "^3.5.3",
    "prettier-plugin-svelte": "^3.4.0"
  }
}

Go ahead and remove prettier from the @seeds/ui package and any other packages that have it installed in their respective package.json files.

Run pnpm install for these changes to take effect.

Now run the command

sh
pnpm dlx prettier --write packages/*/src/**/*

And you should see that it works! Wrap this up in a nice project-level script. This replaces the @seeds/ui’s format script, so you can remove it.

json
"scripts": {
  "format": "prettier --write packages/*/{src,tests}/**/*.ts packages/*/{tailwind.config.js,postcss.config.cjs,vite.config.ts,svelte.config.js}"
}

So we can just run pnpm format to format all of our code in the entire repo.

Linting

Linting works in the @seeds/ui package, but not in the @seeds/server oro @seeds/models packages. Similar to how we handled prettier, we need to hoist the eslint concept up to the project level.

Start by moving the eslint config from @seeds/ui to the root level of the workspace

sh
mv packages/ui/eslint.config.mts .

This eslint config has dependencies, which must also be moved up to the workspace root

/package.json

json
{
  "devDependencies": {
    "@eslint/js": "^9.28.0",
    "eslint": "^9.28.0",
    "typescript": "~5.8.3",
    "typescript-eslint": "^8.34.0"
  }
}

Type checking the config file

To get the benefit of type-checking on your eslint config, you’ll also need to install @types/node at the workspace level

sh
pnpm i -D @types/node

Now we can run pnpm run lint to lint all of our code in the entire repo. Wrap this up in a nice project-level script

json
"scripts": {
  "lint": "eslint packages/*/src/**/*"
}

You’ll want to update your @seeds/ui tsconfig.json to no longer include eslint.config.mts, so remove this line and _add it to the root tsconfig.json.

Config file adjustments

Now that we’re aiming to lint beyond just the UI package, we have to worry about **/dist folders. Find the place to make this change in eslint.config.mts

diff
- ignores: ['**/assets/**/*'],
+ ignores: ['**/assets/**/*', "**/dist/**"],

You’ll also need to update some paths in this file

diff
+  files: ['packages/*/src/**/*.ts', 'packages/*/tests/**/*.ts'],
-  files: ['src/**/*.ts', 'tests/**/*.ts'],

Now run pnpm lint and you should see that it works! If you discover any lint errors — try to fix them!

Jump to definition

Finally we need to solve the jump to definition issue. What’s missing is something called a “declaration map”. Update your @seeds/models tsconfig.build.json to include this

json
"compilerOptions": {
  "declarationMap": true
}

Now run pnpm build, try to jump to definition and you should see that it takes you to a src/**/*.ts file, not a dist/**/*.d.ts file.

Now run

sh
 pnpm build && \
  pnpm test && \
  pnpm check && \
  pnpm format && \
  pnpm lint