Examine source code of Wordle Extended Share

{
  "manifest_version": 2,
  "name": "Wordle Extended Share",
  "version": "1.0",
  "description": "Includes the guesses in spoiler tags",
  "icons": {
    "48": "icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.powerlanguage.co.uk/*",
        "http://localhost/*"
      ],
      "js": [
        "wordle-share.js"
      ]
    }
  ]
}