Examine source code of Better LibraryThing

{
  "name": "Better LibraryThing",
  "version": "2.0.2",
  "manifest_version": 2,
  "description": "Improves the LibraryThing cataloging experience",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.librarything.com/*"
      ],
      "all_frames": true,
      "js": [
        "js/bundle.js"
      ]
    }
  ],
  "options_ui": {
    "page": "html/options.html",
    "browser_style": true
  },
  "browser_action": {
    "default_title": "Click Me",
    "default_popup": "html/options.html"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "storage",
    "identity",
    "https://*.librarything.com/*",
    "https://*.libgen.is/*",
    "https://*.archive.org/*",
    "https://*.goodreads.com/*",
    "https://*.amazon.ca/*",
    "https://*.amazon.com/*",
    "https://sheets.googleapis.com/v4/spreadsheets/*"
  ],
  "oauth2": {
    "client_id": "1093815162744-4pmdau7ho27uovaim1tqcohob9mklkgk.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/spreadsheets"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ae1ccbaf-b9e4-44e4-b0b1-005db1c0dbd2}"
    }
  },
  "web_accessible_resources": [
    "img/icon16.png",
    "img/icon128.png",
    "img/favicon.ico",
    "img/search.png",
    "img/paste.png",
    "img/login.png",
    "img/save.png",
    "img/edit.gif",
    "img/cross.gif",
    "img/book.png",
    "img/enchanted-book.png",
    "img/written-book.png",
    "img/book-and-quill.png",
    "img/vbl.png"
  ]
}