Examine source code of Better Sentence Segmentation

{
  "name": "Better Sentence Segmentation",
  "short_name": "Better Segment",
  "version": "2.0.1",
  "manifest_version": 3,
  "description": "This extension will make your text easily readable by separating sentences based on periods.",
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "default_locale": "en",
  "permissions": [
    "contextMenus",
    "storage"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "scripts/segmenter.js",
        "scripts/contentscript.js"
      ],
      "css": [
        "styles/main.css"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "action": {
    "default_title": "Better Sentence Segmentation",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon-16.png",
      "48": "images/icon-48.png",
      "128": "images/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "better-sentence-segmentation@onepoordeveloper.github.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}