Examine source code of View Releases

{
  "manifest_version": 2,
  "name": "View Releases",
  "description": "Helps to get to the Release Notes for Firefox version that you need.",
  "short_name": "Releases",
  "version": "1.0.0",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false,
    "type": "module"
  },
  "permissions": [
    "alarms",
    "storage",
    "*://nucleus.mozilla.org/rna/releases/*"
  ],
  "browser_action": {
    "default_popup": "html/popup.html"
  },
  "icons": {
    "16": "./static/logo-16.png",
    "32": "./static/logo-32.png",
    "48": "./static/logo-48.png",
    "64": "./static/logo-64.png",
    "96": "./static/logo-96.png",
    "128": "./static/logo-128.png",
    "256": "./static/logo-256.png",
    "512": "./static/logo-512.png",
    "1024": "./static/logo-1024.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd52f632-0526-4ce3-a6f0-a7c304ce6a56}"
    }
  }
}