Examine source code of Text to Speech (TTS)

{
  "version": "0.2.9",
  "manifest_version": 3,
  "name": "Text to Speech (TTS)",
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "homepage_url": "https://mybrowseraddon.com/text-to-speech.html",
  "description": "A text to speech tool with natural sounding voices.",
  "commands": {
    "_execute_action": {}
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "data/options/options.html"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "data/content_script/icons/*.png",
        "data/content_script/icons/loading.gif"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "109.0",
      "id": "jid1-dqs9BdQga04hBw@jetpack"
    }
  },
  "background": {
    "scripts": [
      "lib/config.js",
      "lib/chrome.js",
      "lib/runtime.js",
      "lib/common.js"
    ]
  },
  "action": {
    "default_title": "Text to Speech",
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "content_scripts": [
    {
      "all_frames": false,
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_start",
      "css": [
        "data/content_script/inject.css"
      ],
      "js": [
        "data/content_script/resources/getboundingbox.js",
        "data/content_script/inject.js",
        "data/interface/resources/audio.js",
        "data/interface/resources/tts.js",
        "data/interface/resources/language.js"
      ]
    }
  ],
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  }
}