Examine source code of text2form

{
  "manifest_version": 2,
  "name": "text2form",
  "version": "1.2",
  "description": "Filling many inputs (Addressforms, Applications, Payments etc) with content from a textarea separated by Newlines.",
  "homepage_url": "https://github.com/klml/text2form.addon",
  "applications": {
    "gecko": {
      "id": "addon_text2form@klml.de",
      "strict_min_version": "60.0"
    }
  },
  "icons": {
    "48": "icons/t2f__48.jpg"
  },
  "browser_action": {
    "default_icon": "icons/t2f__32.jpg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "sidebar_action": {
    "default_icon": "icons/t2f__48.jpg",
    "default_title": "Spread text to form",
    "default_panel": "sidebar/panel.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "permissions": [
    "tabs"
  ]
}