Examine source code of Dreamwidth Features

{
  "manifest_version": 3,
  "name": "Dreamwidth Features",
  "version": "1.1.1",
  "description": "Utility features for Dreamwidth.",
  "browser_specific_settings": {
    "gecko": {
      "id": "dwext@blossom.blue",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "contextualIdentities",
    "cookies",
    "identity"
  ],
  "host_permissions": [
    "https://mail.google.com/*",
    "https://*.dreamwidth.org/*",
    "https://mail.proton.me/*"
  ],
  "background": {
    "scripts": [
      "jquery-3.7.1.min.js",
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "css": [
        "content-script.css"
      ],
      "js": [
        "jquery-3.7.1.min.js",
        "gmail-script.js"
      ]
    },
    {
      "matches": [
        "https://*.dreamwidth.org/*"
      ],
      "css": [
        "content-script.css"
      ],
      "js": [
        "jquery-3.7.1.min.js",
        "dreamwidth-script.js"
      ]
    },
    {
      "matches": [
        "https://mail.proton.me/*"
      ],
      "css": [
        "content-script.css"
      ],
      "js": [
        "jquery-3.7.1.min.js",
        "proton-script.js"
      ],
      "all_frames": true,
      "match_origin_as_fallback": true
    }
  ]
}