Fixing rollup config to not error

package.json

@@ -3,6 +3,7 @@
   "title": "MetamorPOV",
   "version": "0.1.0",
   "description": "Enables customization of reader-insert stories by replacing author-provided hooks such as Y/n, pov/s, and vrb/do/present/.",
+  "type": "module",
   "repository": {
     "type": "git",
     "url": "git+https://git.viscogliosi-pate.com/jean/metamorpov.git"

rollup.config.js

@@ -1,11 +1,14 @@
-import { nodeResolve } from "@rollup/plugin-node-resolve";
+import resolve from '@rollup/plugin-node-resolve';
 import commonjs from '@rollup/plugin-commonjs';
 
 export default {
   input: 'src/replace-words.js',
-  output: {
-    file: 'src/content-script.js',
-    format: 'cjs',
-  },
-  plugins: [nodeResolve(), commonjs()]
+  output: [
+    {
+      file: 'src/content-script.js',
+      format: 'iife',
+      name: 'contentScript'
+    }
+  ],
+  plugins: [resolve(), commonjs()]
 };