Redirecting console logs to logcat

Author: arvibuddy

src-tauri/capabilities/main.json

@@ -23,6 +23,7 @@
     "barcode-scanner:default",
     "os:allow-platform",
     "dialog:allow-save",
-    "fs:write-all"
+    "fs:write-all",
+    "log:default"
   ]
 }

ui/src/hooks.client.ts

@@ -1,4 +1,43 @@
 import type { HandleClientError } from "@sveltejs/kit";
+import { info, warn, error as logError, debug, trace } from "@tauri-apps/plugin-log";
+
+// Forward JS console logs to the Tauri native log plugin.
+// On Android this routes to logcat. Requires "log:default" in capabilities/main.json.
+function patchConsoleForLogcat() {
+  const _log = console.log.bind(console);
+  const _warn = console.warn.bind(console);
+  const _error = console.error.bind(console);
+  const _debug = console.debug.bind(console);
+
+  const stringify = (...args: unknown[]) =>
+    args.map((a) => (typeof a === "string" ? a : JSON.stringify(a))).join(" ");
+
+  console.log = (...args: unknown[]) => {
+    _log(...args);
+    info(stringify(...args)).catch(() => {});
+  };
+  console.warn = (...args: unknown[]) => {
+    _warn(...args);
+    warn(stringify(...args)).catch(() => {});
+  };
+  console.error = (...args: unknown[]) => {
+    _error(...args);
+    logError(stringify(...args)).catch(() => {});
+  };
+  console.debug = (...args: unknown[]) => {
+    _debug(...args);
+    debug(stringify(...args)).catch(() => {});
+  };
+
+  // Emit a test log immediately so we can confirm the bridge works
+  info("[VollaMessages:Boot] JS→logcat bridge active").catch(() => {});
+}
+
+try {
+  patchConsoleForLogcat();
+} catch {
+  // Not in a Tauri context — ignore silently.
+}
 
 export const handleError: HandleClientError = async ({ error, event, status, message }) => {
   const errorId = crypto.randomUUID();