Examine source code of Download with Wget

{
  "name": "Download with Wget",
  "description": "when activated, interrupts the built-in download manager to direct links to Wget",
  "version": "0.1.8",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "nativeMessaging",
    "notifications",
    "downloads",
    "contextMenus"
  ],
  "optional_permissions": [
    "cookies",
    "*://*/*"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "config.js",
      "termlib_parser.js",
      "common.js"
    ]
  },
  "browser_action": {},
  "icons": {
    "16": "data/icons/16.png",
    "19": "data/icons/19.png",
    "32": "data/icons/32.png",
    "38": "data/icons/38.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png"
  },
  "homepage_url": "https://add0n.com/download-with.html?from=wget",
  "options_ui": {
    "page": "data/options/index.html",
    "chrome_style": true,
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "data/grab/index.html"
  ]
}