chore: switch to ESM-only build output

Remove CJS build format and update package configuration to be a pure
ESM module. Update all export paths and bin entries from .mjs to .js
extensions to match the new ESM-only output.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: scalvert

package-lock.json

@@ -24,28 +24,26 @@
   },
   "license": "MIT",
   "author": "Steve Calvert",
+  "type": "module",
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
-      "import": "./dist/index.mjs",
-      "require": "./dist/index.js"
+      "import": "./dist/index.js"
     },
     "./adapters": {
       "types": "./dist/adapters-entry.d.ts",
-      "import": "./dist/adapters-entry.mjs",
-      "require": "./dist/adapters-entry.js"
+      "import": "./dist/adapters-entry.js"
     },
     "./theme": {
       "types": "./dist/theme/index.d.ts",
-      "import": "./dist/theme/index.mjs",
-      "require": "./dist/theme/index.js"
+      "import": "./dist/theme/index.js"
     }
   },
   "main": "./dist/index.js",
-  "module": "./dist/index.mjs",
+  "module": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "bin": {
-    "docusaurus-mcp-verify": "./dist/cli/verify.mjs"
+    "docusaurus-mcp-verify": "./dist/cli/verify.js"
   },
   "files": [
     "dist"

package.json

@@ -7,8 +7,8 @@
  */
 
 import http from 'http';
-import { McpDocsServer } from '../dist/index.mjs';
-import { buildSearchIndex, exportSearchIndex } from '../dist/index.mjs';
+import { McpDocsServer } from '../dist/index.js';
+import { buildSearchIndex, exportSearchIndex } from '../dist/index.js';
 
 const PORT = process.env.PORT || 3457;
 

scripts/test-mcp-server.mjs

@@ -7,7 +7,7 @@ export default defineConfig({
     'theme/index': 'src/theme/index.ts',
     'cli/verify': 'src/cli/verify.ts',
   },
-  format: ['cjs', 'esm'],
+  format: ['esm'],
   dts: true,
   clean: true,
   sourcemap: true,