Examine source code of Refermate for Firefox

{
  "manifest_version": 3,
  "name": "Refermate",
  "description": "Refer and earn commission, or shop and earn cash back. Choose from over 36,000 of your favorite online stores.",
  "version": "2.0.19",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "action": {
    "default_icon": {
      "16": "icon/icon-16-inactive.png",
      "32": "icon/icon-32-inactive.png",
      "48": "icon/icon-48-inactive.png",
      "128": "icon/icon-128-inactive.png"
    },
    "default_title": "Refermate unavailable on this store"
  },
  "permissions": [
    "storage",
    "tabs",
    "scripting",
    "unlimitedStorage",
    "alarms",
    "cookies",
    "webNavigation"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e1afc73-8e24-4fd2-8d30-edf3dc8257e0}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "optional": [
          "technicalAndInteraction"
        ],
        "required": [
          "authenticationInfo",
          "browsingActivity",
          "personalCommunications",
          "personallyIdentifyingInfo",
          "websiteActivity",
          "websiteContent"
        ]
      }
    }
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "activation-fetch-bridge.html",
        "activation-fetch-bridge.js",
        "fonts/geist-sans/*.woff2",
        "fonts/geist-mono/*.woff2",
        "icon/*.png",
        "*.svg",
        "*.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "content-scripts/content.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": false,
      "match_about_blank": false,
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "https://*.refermate.com/*",
        "https://refermate.com/*"
      ],
      "all_frames": false,
      "run_at": "document_start",
      "js": [
        "content-scripts/safari-onboarding-status.js"
      ]
    }
  ]
}