Examine source code of Svelte Devtools

{
  "manifest_version": 2,
  "name": "Svelte Devtools",
  "version": "1.3.0",
  "description": "Browser devtools extension for debugging Svelte applications.",
  "icons": {
    "16": "icon-16.png",
    "24": "icon-24.png",
    "48": "icon-48.png",
    "96": "icon-96.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "devtools_page": "devtools/index.html",
  "web_accessible_resources": [
    "privilegedContent.js"
  ]
}