Add native ESM support

Author: wojtekmaj

package.json

@@ -2,11 +2,16 @@
   "name": "detect-element-overflow",
   "version": "1.3.1",
   "description": "A function that tells you whether a given element is overflowing its container or not. Useful for creating dropdowns and tooltips.",
-  "main": "dist/cjs/index.js",
-  "module": "dist/esm/index.js",
-  "source": "src/index.ts",
-  "types": "dist/cjs/index.d.ts",
+  "type": "module",
   "sideEffects": false,
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/esm/index.js",
+  "source": "./src/index.ts",
+  "types": "./dist/cjs/index.d.ts",
+  "exports": {
+    "import": "./dist/esm/index.js",
+    "require": "./dist/cjs/index.js"
+  },
   "scripts": {
     "build": "yarn build-esm && yarn build-cjs",
     "build-esm": "tsc --project tsconfig.build.json --outDir dist/esm --module esnext",