Examine source code of MaterialIconic for GitHub

{
  "name": "MaterialIconic for GitHub",
  "version": "0.0.1",
  "description": "Replace the file/folder icons on the GitHub file browser with icons representing the file's type and which tool it is used by.",
  "homepage_url": "https://github.com/nyxblabs/materialiconic-github-extension",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*",
        "*://bitbucket.org/*",
        "*://dev.azure.com/*",
        "*://*.visualstudio.com/*",
        "*://gitea.com/*",
        "*://gitlab.com/*",
        "*://gitee.com/*",
        "*://sourceforge.net/*"
      ],
      "js": [
        "./main.js"
      ],
      "css": [
        "./injected-styles.css"
      ],
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{708564eb-c531-4d15-98fc-028a80a0d3ed}"
    }
  },
  "manifest_version": 2,
  "web_accessible_resources": [
    "*.svg"
  ],
  "browser_action": {
    "default_title": "MaterialIconic Settings",
    "default_popup": "settings-popup.html",
    "default_icon": {
      "16": "icon-16.png",
      "32": "icon-32.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    }
  }
}