Examine source code of Kill It

{
  "manifest_version": 2,
  "name": "Kill It",
  "description": "Kill Ads and Slide-Ins",
  "author": "Anthony Shipman",
  "homepage_url": "http://www.anthony-shipman.id.au/",
  "version": "1.0.7",
  "default_locale": "en",
  "icons": {
    "48": "/data/Hand_with_knife_48.png",
    "64": "/data/Hand_with_knife_64.png",
    "96": "/data/Hand_with_knife_96.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "56.0",
      "id": "killit@jetpack"
    }
  },
  "background": {
    "scripts": [
      "kUtils.js",
      "kEvent.js",
      "kMeta.js",
      "activity.js",
      "data/catalog.js",
      "configs.js",
      "main.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "data/Hand_with_knife.svg",
    "default_title": "Kill It"
  },
  "commands": {
    "killit-clicked": {
      "suggested_key": {
        "default": "Alt+Shift+K"
      },
      "description": "Pop up the KillIt panel"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "kUtils.js",
        "kEvent.js",
        "kDOM.js",
        "kMeta.js",
        "data/catalog.js",
        "configs.js",
        "killitContent.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "storage",
    "menus",
    "<all_urls>",
    "downloads",
    "clipboardWrite",
    "history"
  ]
}