Sherif: Opinionated, zero-config linter for JavaScript monorepos

---  ## About Sherif is an opinionated, zero-config linter for JavaScript monorepos. It runs fast in any monorepo and enforces rules to provide a better, standardized DX. ## Features - ✨ **PNPM, NPM, Yarn...**: sherif works with all package managers - 🔎 **Zero-config**: it just works and prevents regressions - ⚡ **Fast**: doesn't need `node_modules` installed, written in 🦀 Rust ## Installation Run `sherif` in the root of your monorepo to list the found issues. Any error will cause Sherif to exit with a code 1: ```bash # PNPM pnpm dlx sherif@latest # NPM npx sherif@latest ``` We recommend running Sherif in your CI once [all errors are fixed](#autofix). Run it by **specifying a version instead of latest**. This is useful to prevent regressions (e.g. when adding a library to a package but forgetting to update the version in other packages of the monorepo).

GitHub Actions example

```yaml name: Sherif on: pull_request: jobs: check: name: Run Sherif runs-on: ubuntu-22.04 steps: - name: Checkout uses: actions/checkout@v4 - uses: actions/setup-node@v3 with: node-version: 20 - run: npx sherif@1.0.0 ```

## Autofix Most issues can be automatically fixed by using the `--fix` (or `-f`) flag. Sherif will automatically run your package manager's `install` command (see [No-install mode](#no-install-mode) to disable this behavior) to update the lockfile. Note that autofix is disabled in CI environments (when `$CI` is set): ```bash sherif --fix ``` ### No-install mode If you don't want Sherif to run your packager manager's `install` command after running autofix, you can use the `--no-install` flag: ```bash sherif --fix --no-install ``` ## Rules You can ignore a specific rule by using `--ignore-rule ` (or `-r `): ```bash # Ignore both rules sherif -r packages-without-package-json -r root-package-manager-field ``` You can ignore all issues in a package by using `--ignore-package ` (or `-p `): ```bash # Ignore all issues in the `@repo/tools` package sherif -p @repo/tools # Ignore all issues for packages inside `./integrations/*` sherif -p "./integrations/*" ``` > **Note** > Sherif doesn't have many rules for now, but will likely have more in the future (along with more features). #### `empty-dependencies` ❌ `package.json` files should not have empty dependencies fields. #### `multiple-dependency-versions` ❌ A given dependency should use the same version across the monorepo. You can ignore this rule for a specific dependency and version or all versions of a dependency if it's expected in your monorepo by using `--ignore-dependency ` / `--ignore-dependency ` (or `-i ` / `-i `): ```bash # Ignore only the specific dependency version mismatch sherif -i react@17.0.2 -i next@13.2.4 # Completely ignore all versions mismatch of these dependencies sherif -i react -i next ``` #### `non-existant-packages` ⚠️ All paths defined in the workspace (the root `package.json`' `workspaces` field or `pnpm-workspace.yaml`) should match at least one package. #### `packages-without-package-json` ⚠️ All packages matching the workspace (the root `package.json`' `workspaces` field or `pnpm-workspace.yaml`) should have a `package.json` file. #### `root-package-dependencies` ⚠️ The root `package.json` is private, so making a distinction between `dependencies` and `devDependencies` is useless - only use `devDependencies`. #### `root-package-manager-field` ❌ The root `package.json` should specify the package manager and version to use. Useful for tools like corepack. #### `root-package-private-field` ❌ The root `package.json` should be private to prevent accidentaly publishing it to a registry. #### `types-in-dependencies` ❌ Private packages shouldn't have `@types/*` in `dependencies`, since they don't need it at runtime. Move them to `devDependencies`. #### `unordered-dependencies` ❌ Dependencies should be ordered alphabetically to prevent complex diffs when installing a new dependency via a package manager. ## Credits - [dedubcheck](https://github.com/innovatrics/dedubcheck) that given me the idea for Sherif - [Manypkg](https://github.com/Thinkmill/manypkg) for some of their rules - [This article](https://blog.orhun.dev/packaging-rust-for-npm/) for the Rust releases on NPM ## Sponsors  ## License [MIT](./LICENSE)