use esbuild as javascript transpiler

package.json

@@ -4,7 +4,7 @@
   "description": "mirror all your public github repositories to your gitea server",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "build": "npx esbuild src/index.js --bundle --outdir=dist/ --platform=node"
   },
   "repository": {
     "type": "git",
@@ -21,5 +21,8 @@
     "@octokit/rest": "^18.0.12",
     "p-queue": "^6.6.2",
     "superagent": "^4.0.0"
+  },
+  "devDependencies": {
+    "esbuild": "0.24.0"
   }
 }