chore: add linting

background/messages/createEntry.ts

@@ -10,7 +10,8 @@ export interface CreateEntryRequestBody {
   timestamp: number;
 }
 
-export interface CreateEntryResponseBody {}
+// https://www.totaltypescript.com/the-empty-object-type-in-typescript#representing-an-empty-object
+export type CreateEntryResponseBody = Record<PropertyKey, never>;
 
 export const handleCreateEntryRequest = async (body: CreateEntryRequestBody) => {
   if (await getClipboardMonitorIsEnabled()) {

eslint.config.mjs

@@ -0,0 +1,17 @@
+// @ts-check
+
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { includeIgnoreFile } from "@eslint/compat";
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const gitignorePath = path.resolve(__dirname, ".gitignore");
+
+export default tseslint.config(
+  includeIgnoreFile(gitignorePath),
+  eslint.configs.recommended,
+  tseslint.configs.recommended,
+);

package.json

@@ -9,6 +9,7 @@
     "build": "plasmo build",
     "build:firefox": "ts-node scripts/build-firefox-setup.ts && prettier package.json --write && plasmo build --target=firefox-mv2 && ts-node scripts/build-firefox-teardown.ts",
     "package": "plasmo package",
+    "lint": "eslint .",
     "format": "prettier . --write"
   },
   "dependencies": {
@@ -38,15 +39,19 @@
     "zod": "^3.23.8"
   },
   "devDependencies": {
+    "@eslint/compat": "^1.2.3",
+    "@eslint/js": "^9.16.0",
     "@ianvs/prettier-plugin-sort-imports": "4.1.1",
     "@types/chrome": "0.0.258",
     "@types/node": "20.11.5",
     "@types/react": "18.2.48",
     "@types/react-dom": "18.2.18",
     "@types/react-window": "^1.8.8",
+    "eslint": "^9.16.0",
     "prettier": "3.2.4",
     "ts-node": "^10.9.2",
-    "typescript": "5.3.3"
+    "typescript": "5.3.3",
+    "typescript-eslint": "^8.16.0"
   },
   "manifest": {
     "permissions": [