Examine source code of Wiki Journey

{
  "manifest_version": 2,
  "name": "Wiki Journey",
  "version": "1.3",
  "description": "Visualizes your daily Wikipedia adventures",
  "permissions": [
    "tabs",
    "storage",
    "*://*.wikipedia.org/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wikipedia.org/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "48": "icon.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "d3.v7.min.js",
    "pikaday.js",
    "LinBiolinum_aS.ttf"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ea65087-7dfb-4140-9943-6ecdf404a402}"
    }
  }
}