Examine source code of VVimpulation

{
  "manifest_version": 2,
  "name": "VVimpulation",
  "version": "1.5",
  "description": "Provides keyboard navigation like Vim.",
  "applications": {
    "gecko": {
      "id": "{b8b81a2f-da03-461c-a8cd-377d84f6d5b7}",
      "strict_min_version": "58.0"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "bookmarks",
    "clipboardRead",
    "clipboardWrite",
    "downloads",
    "find",
    "history",
    "sessions",
    "storage",
    "tabs",
    "webNavigation",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "common/utils.js",
      "common/port.js",
      "background/default_options.js",
      "background/command.js",
      "background/macro.js",
      "background/wimpulation.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "common/utils.js",
        "common/dom_utils.js",
        "common/scroll.js",
        "common/port.js",
        "content_scripts/hover_killer.js",
        "content_scripts/command.js",
        "content_scripts/frontend_command.js",
        "content_scripts/hint_command.js",
        "content_scripts/frame_info.js",
        "content_scripts/insert_mode.js",
        "content_scripts/hint_mode.js",
        "content_scripts/visual_mode.js",
        "content_scripts/console_mode.js",
        "content_scripts/suspend_mode.js",
        "content_scripts/wimpulation.js"
      ],
      "css": [
        "content_scripts/wimpulation.css"
      ],
      "match_about_blank": true,
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "console/console.html"
  ]
}