Examine source code of grpc-web-devtools

{
  "name": "grpc-web-devtools",
  "version": "1.0.2",
  "description": "Chrome extension for gRPC-Web to inspect requests and responses in human readable format",
  "manifest_version": 2,
  "content_scripts": [
    {
      "js": [
        "contentScript.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "devtools_page": "devtools/devtools.html",
  "web_accessible_resources": [
    "devtools/devtools.html",
    "devtools/panel.html",
    "injected.js"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "assets/icon.png",
    "32": "assets/icon.png",
    "48": "assets/icon.png",
    "128": "assets/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8786bcac-1dd9-4b8a-b76a-58a35d6ead39}"
    }
  }
}