Examine source code of Metrc Toolkit

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "permissions": [
    "https://*.metrc.com/*"
  ],
  "optional_permissions": [
    "https://*.metrctoolkit.com/*",
    "https://*.gosellout.com/*"
  ],
  "icons": {
    "16": "icons/icon-16x16.png",
    "19": "icons/icon-19x19.png",
    "38": "icons/icon-38x38.png",
    "48": "icons/icon-48x48.png",
    "128": "icons/icon-128x128.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "16": "icons/icon-16x16.png",
      "19": "icons/icon-19x19.png",
      "38": "icons/icon-38x38.png",
      "48": "icons/icon-48x48.png",
      "128": "icons/icon-128x128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.metrc.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "js/content-script.js"
      ],
      "css": [
        "css/content-script.489aeabe.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "img/*",
    "fonts/*"
  ],
  "version": "1.34.1",
  "content_security_policy": "script-src 'self' ; object-src 'self'"
}