Examine source code of Remove Wikimedia Sidebar

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "1.0.0",
  "version_name": "beta",
  "author": "PetitPotiron",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "wikimedia-sidebar-remover@jetpack"
    }
  },
  "homepage_url": "https://github.com/PetitPotiron/remove-wikimedia-sidebar",
  "icons": {
    "48": "icons/wikimedia.svg"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.wikimedia.org/*",
        "*://*.wikipedia.org/*",
        "*://*.wiktionary.org/*",
        "*://*.wikiquote.org/*",
        "*://*.wikibooks.org/*",
        "*://*.wikisource.org/*",
        "*://*.wikinews.org/*",
        "*://*.mediawiki.org/*",
        "*://*.wikivoyage.org/*",
        "*://*.wikifunctions.org/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/wikimedia.svg"
    },
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/popup.html",
    "theme_icons": [
      {
        "light": "icons/wikimedia.svg",
        "dark": "icons/wikimedia.svg",
        "size": 16
      }
    ]
  }
}