How to add Multi background files in Exteiosn v3 [duplicate]

// in v2 mode we can use this

"background": {
  "scripts": [
     "background.js", "url.js", "bg.js", "setcookie.js",  "jquery.js"
  ] },

//but in v3 mode we have only one script

 "background": {
  "service_worker": "service-worker.js",  "type": "module" },

i have 4-5 backgroud file for different events how i can add these file in V3 menifest