Examine source code of KBChan

{
  "manifest_version": 3,
  "name": "KBChan - Japanese Subtitle Sidebar",
  "version": "0.11",
  "description": "Study Japanese with native subtitles on Netflix, Crunchyroll, Amazon Prime Video, YouTube, and more using KanjiBreakdown.com",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "alarms",
    "storage",
    "tabs",
    "unlimitedStorage",
    "webRequest"
  ],
  "host_permissions": [
    "https://www.kanjibreakdown.com/*",
    "<all_urls>",
    "ws://localhost:12654/",
    "file:///*",
    "https://jimaku.cc/*"
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "KBChan",
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content-globals.css",
        "word-popup-fallback/word-popup-fallback.css"
      ],
      "js": [
        "subtitleParser-content-script.js",
        "lib/HtmlSanitizer.min.js",
        "content-globals.js",
        "word-popup-fallback/word-popup-fallback.js",
        "lib/wanakana.min.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    },
    {
      "matches": [
        "*://*.stremio.com/*"
      ],
      "css": [
        "video-subs/video-subs-content-script.css",
        "sidebar/KBSidebar.css",
        "video-subs/stremio/stremio-content-script.css"
      ],
      "js": [
        "video-subs/video-subs-content-script.js",
        "sidebar/KBSidebar.js",
        "video-subs/stremio/stremio-content-script.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "css": [
        "video-subs/video-subs-content-script.css",
        "video-subs/youtube/youtube-content-script.css"
      ],
      "js": [
        "video-subs/video-subs-content-script.js",
        "video-subs/youtube/youtube-content-script.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.primevideo.com/*"
      ],
      "css": [
        "video-subs/video-subs-content-script.css",
        "sidebar/KBSidebar.css",
        "video-subs/amazon-prime/amazon-prime-content-script.css"
      ],
      "js": [
        "video-subs/video-subs-content-script.js",
        "sidebar/KBSidebar.js",
        "video-subs/amazon-prime/amazon-prime-content-script.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.netflix.com/*"
      ],
      "css": [
        "video-subs/video-subs-content-script.css",
        "sidebar/KBSidebar.css",
        "video-subs/netflix/netflix-content-script.css"
      ],
      "js": [
        "video-subs/video-subs-content-script.js",
        "sidebar/KBSidebar.js",
        "video-subs/netflix/netflix-content-script.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "file:///*.mp4",
        "file:///*.mkv",
        "file:///*.webm",
        "file:///*.ogg",
        "file:///*.ogv",
        "file:///*.mov",
        "file:///*.flv",
        "file:///*.wmv",
        "file:///*.3gp",
        "file:///*.avi"
      ],
      "css": [
        "video-subs/video-subs-content-script.css",
        "sidebar/KBSidebar.css",
        "video-subs/video-file/video-file-content-script.css"
      ],
      "js": [
        "video-subs/video-subs-content-script.js",
        "sidebar/KBSidebar.js",
        "video-subs/video-file/video-file-content-script.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.crunchyroll.com/*"
      ],
      "css": [
        "video-subs/video-subs-content-script.css",
        "sidebar/KBSidebar.css",
        "video-subs/crunchyroll/crunchyroll-content-script.css"
      ],
      "js": [
        "video-subs/video-subs-content-script.js",
        "sidebar/KBSidebar.js",
        "video-subs/crunchyroll/crunchyroll-content-script-v2.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "kb-daishi-d2h5e@kanjibreakdown.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "data/*",
        "lib/sql-wasm.wasm",
        "lib/wanakana-module.min.js",
        "services/subtitleParser.js",
        "services/httpService.js",
        "services/jimaku.js",
        "sidebar/KBSidebar.html",
        "word-popup-fallback/word-popup-fallback.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}