fix: add cjs format support

package.json

@@ -19,12 +19,16 @@
     "mcp"
   ],
   "exports": {
-    "./*": "./dist/*"
+    "./*": {
+      "import": "./dist/esm/*",
+      "require": "./dist/cjs/*"
+    }
   },
   "typesVersions": {
     "*": {
       "*": [
-        "./dist/*"
+        "./dist/esm/*",
+        "./dist/cjs/*"
       ]
     }
   },
@@ -32,8 +36,8 @@
     "dist"
   ],
   "scripts": {
-    "build": "tsc -p tsconfig.prod.json",
-    "prepack": "tsc -p tsconfig.prod.json",
+    "build": "tsup",
+    "prepack": "tsup",
     "lint": "eslint src/",
     "test": "jest",
     "start": "npm run server",
@@ -46,6 +50,7 @@
     "zod": "^3.23.8"
   },
   "devDependencies": {
+    "tsup": "^8.3.5",
     "@eslint/js": "^9.8.0",
     "@types/content-type": "^1.1.8",
     "@types/eslint__js": "^8.42.3",

tsup.config.ts

@@ -0,0 +1,23 @@
+import { defineConfig, Options } from "tsup";
+
+const commonConfig: Options = {
+  clean: true,
+  dts: true,
+  splitting: false,
+  tsconfig: "tsconfig.prod.json",
+};
+
+export default defineConfig([
+  {
+    ...commonConfig,
+    entry: ["src/**/*"],
+    outDir: "dist/cjs",
+    format: ["cjs"],
+  },
+  {
+    ...commonConfig,
+    entry: ["src/**/*"],
+    outDir: "dist/esm",
+    format: ["esm"],
+  },
+]);