feat(eslint-config): add package-json recommended export

- Add eslint-plugin-package-json dependency
- Export recommended-publishable and stylistic configs via ./package-json subpath
- Add CI workflow with ESLint caching
- Enable --cache flag on lint scripts

Author: amondnet

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Install dependencies
+        run: bun install
+
+      - name: Cache ESLint
+        uses: actions/cache@v4
+        with:
+          path: .eslintcache
+          key: eslint-${{ runner.os }}-${{ hashFiles('**/package.json', 'eslint.config.*') }}
+          restore-keys: |
+            eslint-${{ runner.os }}-
+
+      - name: Lint
+        run: bun run lint

.gitignore

@@ -3,3 +3,4 @@ dist/
 .turbo/
 .idea/
 .DS_Store
+.eslintcache

bun.lock

@@ -20,8 +20,8 @@
   },
   "scripts": {
     "build": "turbo run build",
-    "lint": "eslint .",
-    "lint:fix": "eslint . --fix",
+    "lint": "eslint . --cache",
+    "lint:fix": "eslint . --fix --cache",
     "release": "turbo run build"
   },
   "devDependencies": {

package.json

@@ -7,6 +7,10 @@
     ".": {
       "types": "./dist/index.d.ts",
       "import": "./dist/index.js"
+    },
+    "./package-json": {
+      "types": "./dist/package-json.d.ts",
+      "import": "./dist/package-json.js"
     }
   },
   "main": "./dist/index.js",
@@ -18,7 +22,8 @@
     "build": "tsdown"
   },
   "dependencies": {
-    "@antfu/eslint-config": "^7.7.0"
+    "@antfu/eslint-config": "^7.7.0",
+    "eslint-plugin-package-json": "^0.30.0"
   },
   "peerDependencies": {
     "eslint": "^9.10.0 || ^10.0.0"

packages/eslint-config/package.json

@@ -0,0 +1,6 @@
+import packageJson from 'eslint-plugin-package-json'
+
+export const recommended = packageJson.configs['recommended-publishable']
+export const stylistic = packageJson.configs.stylistic
+
+export default recommended

packages/eslint-config/src/package-json.ts

@@ -1,7 +1,7 @@
 import { defineConfig } from 'tsdown'
 
 export default defineConfig({
-  entry: 'src/index.ts',
+  entry: ['src/index.ts', 'src/package-json.ts'],
   format: 'esm',
   dts: true,
   clean: true,