Examine source code of Y-Music-Tools

{
  "name": "__MSG_ext_name__",
  "short_name": "__MSG_ext_short_name__",
  "description": "__MSG_ext_description__",
  "version": "1.0.2",
  "manifest_version": 3,
  "author": "Ekcler",
  "default_locale": "ru",
  "host_permissions": [
    "https://api.music.yandex.ru/*",
    "https://api.music.yandex.net/*",
    "https://api.music.yandex.kz/*",
    "https://api.music.yandex.by/*",
    "https://api.music.yandex.com/*",
    "https://api.music.yandex.uz/*",
    "https://api.music.yandex.ua/*",
    "https://*.yandex.net/*",
    "https://*.yandex.ru/*"
  ],
  "permissions": [
    "storage",
    "tabs",
    "downloads"
  ],
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "https://music.yandex.ru/*",
        "https://music.yandex.by/*",
        "https://music.yandex.kz/*",
        "https://music.yandex.com/*",
        "https://music.yandex.uz/*",
        "https://music.yandex.ua/*"
      ],
      "js": [
        "/src/core/fetch-interceptor.js"
      ],
      "world": "MAIN"
    },
    {
      "run_at": "document_end",
      "matches": [
        "https://music.yandex.ru/*",
        "https://music.yandex.by/*",
        "https://music.yandex.kz/*",
        "https://music.yandex.com/*",
        "https://music.yandex.uz/*",
        "https://music.yandex.ua/*"
      ],
      "js": [
        "/src/lib/browser-polyfill.min.js",
        "/src/lib/localization.js",
        "/src/lib/sweetalert2.min.js",
        "/src/lib/alert.js",
        "/src/lib/request.js",
        "/src/lib/api/common.js",
        "/src/lib/elementCreator.js",
        "/src/lib/elementHandler.js",
        "/src/lib/elementInsertion.js",
        "/src/features/playlist/exporter.js",
        "/src/features/playlist/addToPlaylist.js",
        "/src/features/playlist/importer.js",
        "/src/features/playlist/jump-to-track.js",
        "/src/features/playlist/hide-ui.js",
        "/src/features/playlist/menu.js",
        "/src/features/download/downloader.js",
        "/src/features/download/row-download.js",
        "/src/core/modcreator.js",
        "/src/core/content.js"
      ]
    }
  ],
  "action": {},
  "background": {
    "scripts": [
      "/src/lib/browser-polyfill.min.js",
      "/src/background/background-fx.js",
      "/src/background/background-download.js"
    ]
  },
  "icons": {
    "16": "/icon/icon16.png",
    "24": "/icon/icon24.png",
    "32": "/icon/icon32.png",
    "48": "/icon/icon48.png",
    "64": "/icon/icon64.png",
    "128": "/icon/icon128.png",
    "256": "/icon/icon256.png",
    "512": "/icon/icon512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "y-music-tools@ekcler.github.io",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}