Linting Package.json

Manypkg

Manypkg does a bunch of things for monorepos, but we’re going to rely on it for linting our package.json files.

Install it

sh
pnpm add -D @manypkg/cli

You can run the checks

sh
pnpm manypkg check

And some checks can be fixed automatically (e.g. ordering of dependencies)

sh
pnpm manypkg fix

Let’s add this as a script to our root package.json, and make it part of the top-level lint script (this feels more like linting than typechecking to me, personally, although arguably TypeScript is just a fancy linter)

json
"scripts": {
  "dev": "pnpm --color run -r dev",
  "lint": "pnpm --color run -r lint && pnpm --color manifests-lint",
  "manifests-lint": "pnpm manypkg check",
  "manifests-fix": "pnpm manypkg fix"
}

Now you can run pnpm lint and it applies some rules to our package.json files.