Examine source code of GitLab Helper

{
  "name": "GitLab Helper",
  "version": "1.4.5",
  "manifest_version": 3,
  "description": "Copy more descriptive issue headlines to the clipboard.",
  "homepage_url": "https://mia3.com",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "default_locale": "en",
  "content_scripts": [
    {
      "matches": [
        "https://gitlab.mia3.com/*"
      ],
      "js": [
        "src/gitlab.js"
      ],
      "css": [
        "src/gitlab.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gitlab-helper@mia3.com"
    }
  }
}