Examine source code of Web Prowler

{
  "manifest_version": 2,
  "name": "Web Prowler",
  "description": "Display related pages on sidebar.",
  "version": "1.43",
  "applications": {
    "gecko": {
      "strict_min_version": "60.0"
    }
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "http://*/*",
        "https://*/*",
        "ftp://*/*"
      ],
      "js": [
        "src/tiny_segmenter-0.2.js",
        "src/Tokenizer_tiny_segmenter.js",
        "src/pagescript.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/Test.js",
      "src/localForage/dist/localforage.min.js",
      "src/LocalStorage.js",
      "src/tiny_segmenter-0.2.js",
      "src/Tokenizer_tiny_segmenter.js",
      "src/Page_get.js",
      "src/background.js"
    ]
  },
  "permissions": [
    "tabs",
    "<all_urls>",
    "bookmarks",
    "history"
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "sidebar_action": {
    "default_icon": {
      "48": "icons/icon_48.png",
      "96": "icons/icon_96.png"
    },
    "default_title": "Web Prowler",
    "default_panel": "src/panel.html"
  },
  "icons": {
    "48": "icons/icon_48.png",
    "96": "icons/icon_96.png"
  },
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Alt+S"
      },
      "description": "Toggle the Web Prowler sidebar"
    }
  }
}