Add plugin type declaration

Closes
#2

Author: NickvanDyke

package.json

@@ -1,14 +1,16 @@
 {
   "name": "eslint-plugin-react-you-might-not-need-an-effect",
-  "version": "0.0.40",
+  "version": "0.0.42",
   "description": "ESLint rule to warn against unnecessary React useEffect hooks.",
   "author": "Nick van Dyke",
   "license": "MIT",
   "type": "module",
   "module": "./src/index.js",
   "main": "./dist/index.cjs",
+  "types": "./types/index.d.ts",
   "files": [
     "src",
+    "types",
     "dist"
   ],
   "exports": {

types/index.d.ts

@@ -0,0 +1,4 @@
+import type { ESLint } from "eslint";
+
+declare const plugin: ESLint.Plugin;
+export default plugin;