Examine source code of Odesli for Bandcamp

{
  "manifest_version": 2,
  "name": "Odesli for Bandcamp",
  "description": "Open Bandcamp album on every streaming platform. Powered by Songlink, Odesli & Itunes API.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "version": "3.6.1",
  "permissions": [
    "storage",
    "tabs",
    "*://*.bandcamp.com/*",
    "*://*.vercel.app/*"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_title": "Odesli for Bandcamp",
    "default_popup": "options.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.bandcamp.com/album/*"
      ],
      "js": [
        "bc_inject_album.js"
      ],
      "css": [
        "bc_styles.css"
      ]
    },
    {
      "matches": [
        "*://bandcamp.com/discover",
        "*://bandcamp.com/discover/*",
        "*://bandcamp.com/discover?*",
        "*://bandcamp.com/?g*"
      ],
      "js": [
        "bc_inject_discover.js"
      ],
      "css": [
        "bc_styles.css"
      ]
    },
    {
      "matches": [
        "*://*.bandcamp.com/track/*"
      ],
      "js": [
        "bc_inject_track.js"
      ],
      "css": [
        "bc_styles.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "icons/*.svg",
    "*.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hello.bbureau.bandcamp@gmail.com",
      "strict_min_version": "106.0"
    }
  }
}