Examine source code of MobX Developer Tools

{
  "manifest_version": 3,
  "name": "MobX Developer Tools",
  "description": "Dev-tools for MobX and React",
  "icons": {
    "16": "icons/Icon-16.png",
    "48": "icons/Icon-48.png",
    "128": "icons/Icon-128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/Icon-16.png",
      "48": "icons/Icon-48.png",
      "128": "icons/Icon-128.png"
    },
    "default_title": "MobX Developer Tools"
  },
  "devtools_page": "panel-loader.html",
  "commands": {
    "open-devtools-window": {
      "suggested_key": {
        "default": "Alt+M"
      },
      "description": "DevTools window to left"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "main.html",
        "panel.html",
        "backend.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "contextMenus",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "injectGlobalHook.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "testHelper.js"
      ],
      "run_at": "document_start"
    }
  ],
  "version": "0.9.33",
  "version_name": "0.9.33",
  "browser_specific_settings": {
    "gecko": {
      "id": "@mobx",
      "strict_min_version": "58.0"
    }
  }
}