Pretty rendering of JSON messages

matrixgw_frontend/package-lock.json

@@ -23,6 +23,7 @@
         "qrcode.react": "^4.2.0",
         "react": "^19.1.1",
         "react-dom": "^19.1.1",
+        "react-json-view-lite": "^2.5.0",
         "react-router": "^7.9.5"
       },
       "devDependencies": {
@@ -3674,6 +3675,18 @@
       "integrity": "sha512-x3Ax3kNSMIIkyVYhWPyO09bu0uttcAIoecO/um/rKGQ4EltYWVYtyiGkS/3xMynrbVQdS69Jhlv8FXUEZehlzA==",
       "license": "MIT"
     },
+    "node_modules/react-json-view-lite": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/react-json-view-lite/-/react-json-view-lite-2.5.0.tgz",
+      "integrity": "sha512-tk7o7QG9oYyELWHL8xiMQ8x4WzjCzbWNyig3uexmkLb54r8jO0yH3WCWx8UZS0c49eSA4QUmG5caiRJ8fAn58g==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "react": "^18.0.0 || ^19.0.0"
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.18.0.tgz",

matrixgw_frontend/package.json

@@ -25,6 +25,7 @@
     "qrcode.react": "^4.2.0",
     "react": "^19.1.1",
     "react-dom": "^19.1.1",
+    "react-json-view-lite": "^2.5.0",
     "react-router": "^7.9.5"
   },
   "devDependencies": {

matrixgw_frontend/src/routes/WSDebugRoute.tsx

@@ -1,4 +1,6 @@
 import React from "react";
+import { JsonView, darkStyles } from "react-json-view-lite";
+import "react-json-view-lite/dist/index.css";
 import { WsApi, type WsMessage } from "../api/WsApi";
 import { useSnackbar } from "../hooks/contexts_provider/SnackbarProvider";
 import { time } from "../utils/DateUtils";
@@ -48,7 +50,19 @@ export function WSDebugRoute(): React.ReactElement {
   return (
     <MatrixGWRouteContainer label={"WebSocket Debug"}>
       State: {state}
-      {JSON.stringify(messages)}
+      {messages.map((msg, id) => (
+        <div style={{ margin: "10px", backgroundColor: "black" }}>
+          <JsonView
+            key={id}
+            data={msg}
+            shouldExpandNode={(level) => level < 2}
+            style={{
+              ...darkStyles,
+              container: "",
+            }}
+          />
+        </div>
+      ))}
     </MatrixGWRouteContainer>
   );
 }