Examine source code of Desi Lingo

{
  "manifest_version": 2,
  "name": "Desi Lingo",
  "description": "Learn Hindi with a popup dictionary, YouTube/Netflix subtitles, and Anki sentence mining. 120K+ words, works on any webpage.",
  "version": "0.2.2",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "unlimitedStorage",
    "tabs",
    "cookies",
    "scripting",
    "https://desi-lingo.app/*",
    "*://*.youtube.com/*",
    "*://*.netflix.com/*",
    "*://*.primevideo.com/*",
    "*://*.amazon.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@desi-lingo.app",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "web_accessible_resources": [
    "youtube-inject.js",
    "youtube-keyboard-intercept.js",
    "netflix-inject.js",
    "netflix-keyboard-intercept.js",
    "prime-inject.js",
    "prime-keyboard-intercept.js",
    "chunk-manifest.json",
    "dictionary-lookup-0.json",
    "dictionary-lookup-1.json",
    "dictionary-lookup-2.json",
    "dictionary-lookup-3.json",
    "dictionary-lookup-4.json",
    "dictionary-lookup-5.json",
    "dictionary-lookup-6.json",
    "forms-lookup-0.json",
    "forms-lookup-1.json",
    "forms-lookup-2.json",
    "forms-lookup-3.json",
    "forms-lookup-4.json",
    "forms-lookup-5.json",
    "forms-lookup-6.json",
    "forms-lookup-7.json",
    "surface-freq.json"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Desi Lingo",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content-scripts/content.js",
        "content-scripts/youtube.js"
      ]
    },
    {
      "matches": [
        "*://*.netflix.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/netflix.js"
      ]
    },
    {
      "matches": [
        "*://*.amazon.com/*",
        "*://*.primevideo.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/prime.js"
      ]
    },
    {
      "matches": [
        "https://desi-lingo.app/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/webapp.js"
      ]
    }
  ]
}