*Add tsup

package.json

@@ -3,6 +3,9 @@
     "type": "module",
     "version": "0.1.0",
     "main": "dist/index.js",
+    "scripts": {
+        "build": "tsup"
+    },
     "devDependencies": {
         "@types/ws": "^8.5.3",
         "esbuild": "^0.14.48",

tsup.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from "tsup";
+
+export default defineConfig({
+  entry: ["src/index.ts"],
+  splitting: false,
+  sourcemap: true,
+  clean: true,
+  format: "esm",
+  bundle: true,
+});