ci: checks for eslint-config-turbo interface (#10794)

### Description

Because JavaScript packaging is so finnicky, I'm thinking its a good
idea to make sure our interfaces stay ecosystem compliant. PRs like
#10747 and
#10754 have potential to break
things, so its nice to have some sanity checking. (I haven't checked yet
if those PRs specifically are right, but they made me think about adding
some tooling like this.)

### Testing Instructions

CI

Author: anthonyshew

.github/workflows/test-js-packages.yml

@@ -72,7 +72,7 @@ jobs:
         # to run when turbo core changes. This job (`js_packages`) does not run on turborpeo core
         # changes, and we don't want to enable that beahvior for _all_ our JS packages.
         run: |
-          TURBO_API= turbo run check-types test build --filter="!turborepo-repository" --filter={./packages/*}...[${{ github.event.pull_request.base.sha || 'HEAD^1' }}] --color --env-mode=strict
+          TURBO_API= turbo run check-types test build package-checks --filter="!turborepo-repository" --filter={./packages/*}...[${{ github.event.pull_request.base.sha || 'HEAD^1' }}] --color --env-mode=strict
         env:
           NODE_VERSION: ${{ matrix.node-version }}
 

packages/eslint-config-turbo/package.json

@@ -1,10 +1,13 @@
 {
   "name": "eslint-config-turbo",
   "version": "2.5.6",
+  "type": "commonjs",
   "description": "ESLint config for Turborepo",
+  "license": "MIT",
+  "author": "Vercel",
   "repository": {
     "type": "git",
-    "url": "https://github.com/vercel/turborepo",
+    "url": "git+https://github.com/vercel/turborepo.git",
     "directory": "packages/eslint-config-turbo"
   },
   "bugs": {
@@ -13,7 +16,9 @@
   "scripts": {
     "build": "bunchee",
     "lint": "eslint src",
-    "lint:prettier": "prettier -c . --cache --ignore-path=../../.prettierignore"
+    "lint:prettier": "prettier -c . --cache --ignore-path=../../.prettierignore",
+    "package:lint": "publint --strict",
+    "package:types": "attw --profile node16 --pack"
   },
   "keywords": [
     "turbo",
@@ -22,7 +27,12 @@
     "eslintconfig",
     "eslint-config"
   ],
+  "files": [
+    "dist"
+  ],
   "main": "./dist/cjs/index.js",
+  "types": "./dist/cjs/index.d.ts",
+  "module": "./dist/es/index.mjs",
   "exports": {
     "./flat": {
       "import": {
@@ -45,25 +55,20 @@
       }
     }
   },
-  "author": "Vercel",
   "dependencies": {
     "eslint-plugin-turbo": "workspace:*"
   },
   "peerDependencies": {
     "eslint": ">6.6.0",
     "turbo": ">2.0.0"
   },
-  "license": "MIT",
   "devDependencies": {
+    "@arethetypeswrong/cli": "^0.18.2",
     "@turbo/eslint-config": "workspace:*",
     "@turbo/tsconfig": "workspace:*",
     "@types/eslint": "^8.56.10",
     "@types/node": "^20",
-    "bunchee": "^6.3.4"
-  },
-  "files": [
-    "dist"
-  ],
-  "module": "./dist/es/index.mjs",
-  "types": "./dist/cjs/index.d.ts"
+    "bunchee": "^6.3.4",
+    "publint": "^0.3.12"
+  }
 }

packages/eslint-config-turbo/src/index.ts

@@ -2,4 +2,5 @@ const config = {
   extends: ["plugin:turbo/recommended"],
 };
 
-module.exports = config;
+// eslint-disable-next-line import/no-default-export -- ESLint convention is a default export
+export default config;