Chrome JavaScript Editor

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Chrome JavaScript Editor",
  "version": "1.0",
  "description": "A Chrome extension that captures selected text and displays it on editor.",
  "permissions": [
    "tabs",
    "contextMenus",
    "offscreen",
    "storage"
  ],
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_popup": "editor.html",
    "default_title": "Chrome JavaScript Editor",
    "default_icon": {
      "16": "icons/editor-icon16.png"
    }
  },
  "icons": {
    "16": "icons/editor-icon16.png"
  },
  "sandbox": {
    "pages": [
      "sandbox.html"
    ]
  }
}