Frontend Integration Patterns

Patterns for integrating frontend frameworks with Tauri v2 IPC, capabilities, and platform-specific behavior.

This section covers frontend integration patterns for Tauri v2 applications. The frontend runs inside a platform webview (WKWebView on macOS, WebView2 on Windows) and communicates with the Rust backend through IPC commands.

What you will find here

IPC Commands

The bridge between your frontend and Rust backend. The IPC Commands page covers command registration, function signatures, state access, error handling, and async patterns with real examples.

useEffect Pitfall

A subtle but severe performance bug specific to Tauri’s webview. The useEffect Pitfall page explains why useLayoutEffect with IPC calls causes the macOS beach ball and how to fix it.

Capabilities and Permissions

Tauri v2 uses a capabilities system to control what the frontend can access. The Capabilities page covers the permission model, plugin access, and security considerations.

The IPC model

Tauri v2 uses a message-passing architecture between the frontend and the Rust backend:

Key characteristics:

• Asynchronous by default — invoke() returns a Promise
• JSON serialization — arguments and return values are serialized via serde
• Type-safe on the Rust side — commands are regular Rust functions with typed parameters
• String errors — Tauri commands return Result<T, String> for error handling

Frontend framework compatibility

These patterns work with any frontend framework. The Tauri invoke() API is framework-agnostic:

// React
import { invoke } from "@tauri-apps/api/core";

useEffect(() => {
  invoke("settings_get").then((settings) => {
    setSettings(settings);
  });
}, []);

// Svelte
import { invoke } from "@tauri-apps/api/core";

onMount(async () => {
  const settings = await invoke("settings_get");
});

// Vue
import { invoke } from "@tauri-apps/api/core";

onMounted(async () => {
  const settings = await invoke("settings_get");
});

Events from Rust to frontend

The Rust backend can push events to the frontend using AppHandle::emit():

// Rust side
app_handle.emit("messages:changed", payload)?;

// Frontend side
import { listen } from "@tauri-apps/api/event";

const unlisten = await listen("messages:changed", (event) => {
  console.log("File changed:", event.payload.filename);
});

// Clean up on unmount
onCleanup(() => unlisten());

This bidirectional communication model (invoke for frontend-to-backend, emit/listen for backend-to-frontend) is the foundation for building responsive Tauri applications.