Examine source code of Player Helper

{
  "name": "Player Helper",
  "version": "2.7.3",
  "description": "Automate steps when website load eg. skip ads in youtube, set speed ...",
  "manifest_version": 3,
  "permissions": [
    "storage",
    "tabs"
  ],
  "icons": {
    "32": "resource/icon.png"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup/index.html",
    "default_title": "Video Player Helper"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "src/helper.js",
        "src/const.js",
        "src/videoEventHandler.js",
        "src/speed.js",
        "src/in_app_panel.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://www.youtube.com/watch*"
      ],
      "js": [
        "src/youtube/ads.js",
        "src/youtube/view.js",
        "src/youtube/speed.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://m.youtube.com/*"
      ],
      "js": [
        "src/mobile_youtube/view.js",
        "src/mobile_youtube/ads.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://www.bilibili.com/video/*"
      ],
      "js": [
        "src/bilibili/view.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{195207f4-39c6-47ce-92e4-73a199e2f819}"
    },
    "gecko_android": {
      "id": "{195207f4-39c6-47ce-92e4-73a199e2f819}"
    }
  }
}