chore: run lint without installing the repo (#757)

Author: wojtekmaj

.github/workflows/ci.yml

@@ -32,14 +32,10 @@ jobs:
 
       - uses: pnpm/action-setup@1e1c8eafbd745f64b1ef30a7d7ed7965034c486c
         name: Install pnpm
-        with:
-          cache: true
-
-      - name: 📦 Install dependencies
-        run: pnpm install
+        # pnpm cache skipped deliberately as the project is not actually installed here
 
       - name: 🔠 Lint project
-        run: pnpm lint
+        run: node scripts/lint.ts
 
   test:
     runs-on: ubuntu-latest

scripts/lint.ts

@@ -0,0 +1,33 @@
+/**
+ * This script runs oxlint and oxfmt in a CI environment, without the need to install the entire
+ * project. It reads the required version from pnpm-lock.yaml and executes the linters accordingly.
+ * It's "stupid by design" so it could work in minimal Node.js environments.
+ */
+
+import { spawnSync } from 'node:child_process'
+
+function getDependencyVersion(dependencyName: string): string {
+  const result = spawnSync('npm', ['pkg', 'get', `devDependencies.${dependencyName}`], {
+    encoding: 'utf8',
+  })
+
+  if (result.status) {
+    throw new Error(`Command failed: pnpm info ${dependencyName} version`)
+  }
+
+  return JSON.parse(result.stdout)
+}
+
+function runCommand(command: string, args: string[]) {
+  const result = spawnSync(command, args, { stdio: 'inherit' })
+
+  if (result.status) {
+    throw new Error(`Command failed: ${command} ${args.join(' ')}`)
+  }
+}
+
+const oxlintVersion = getDependencyVersion('oxlint')
+const oxfmtVersion = getDependencyVersion('oxfmt')
+
+runCommand('pnpx', [`oxlint@${oxlintVersion}`])
+runCommand('pnpx', [`oxfmt@${oxfmtVersion}`, '--check'])