Examine source code of Tab Hider lite

{
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0a1",
      "id": "{1b65b209-ff40-4838-9a24-53e25e71f744}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_title": "Tab Hider",
    "default_popup": "tabs.html"
  },
  "description": "Hide tabs in groups",
  "homepage_url": "https://none",
  "manifest_version": 2,
  "name": "Tab Hider",
  "permissions": [
    "tabs",
    "storage",
    "tabHide"
  ],
  "version": "1.0"
}