Examine source code of Ember Inspector

{
  "manifest_version": 3,
  "name": "Ember Inspector",
  "description": "Tool for debugging Ember applications.",
  "version": "4.17.0",
  "icons": {
    "16": "panes-3-16-0/assets/images/icon16.png",
    "38": "panes-3-16-0/assets/images/icon38.png",
    "48": "panes-3-16-0/assets/images/icon48.png",
    "128": "panes-3-16-0/assets/images/icon128.png"
  },
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "boot.js"
      ],
      "world": "MAIN",
      "run_at": "document_start",
      "match_about_blank": true,
      "match_origin_as_fallback": true,
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_end",
      "match_about_blank": true,
      "match_origin_as_fallback": true,
      "all_frames": true
    }
  ],
  "devtools_page": "devtools.html",
  "action": {
    "default_icon": {
      "19": "panes-3-16-0/assets/images/icon19_grey.png",
      "38": "panes-3-16-0/assets/images/icon38_grey.png"
    },
    "default_title": "This webpage is not running Ember.js"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ember-inspector@emberjs.com"
    }
  },
  "options_ui": {
    "page": "options-dialog.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "scripts/in-page-script.js",
        "panes-*/*.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ]
}