# What Frontend Framework Does Securo Use? React 19 + Vite Explained

> Discover Securo's frontend framework: React 19 powered by Vite. Learn how this combination optimizes performance and development speed for the Securo platform.

- Repository: [securo-finance/securo](https://github.com/securo-finance/securo)
- Tags: deep-dive
- Published: 2026-08-28

---

**Securo uses React 19 with React-DOM 19 for its frontend, bundled and served using Vite as the build tool.**

The Securo finance platform's web interface is built on a modern React stack. According to the securo-finance/securo source code, the frontend combines the latest React release with Vite's fast development server and optimized production builds.

## React 19 as the Core Framework

Securo's UI is implemented entirely in **React 19**, the most recent major version of the popular JavaScript library. This is declared explicitly in [`frontend/package.json`](https://github.com/securo-finance/securo/blob/main/frontend/package.json) with the dependency `"react": "^19.2.0"`.

The entry point for the application is a standard React component located at [`frontend/src/App.tsx`](https://github.com/securo-finance/securo/blob/main/frontend/src/App.tsx). This root component handles routing configuration, context providers, and the overall layout structure for the Securo finance interface.

### Component Architecture

Components throughout the codebase follow React 19 patterns using TypeScript and TSX syntax. Here's a representative component structure you'll find in the project:

```tsx
import { useState } from 'react';

export function Counter() {
  const [count, setCount] = useState(0);
  return (
    <button onClick={() => setCount(c => c + 1)}>
      Clicked {count} {count === 1 ? 'time' : 'times'}
    </button>
  );
}

```

This pattern—imports from `'react'`, function components, and the `useState` hook—appears consistently across the `frontend/src/` directory.

## Vite as the Build Tool

Rather than Create React App or Next.js, Securo uses **Vite** for its build pipeline. Vite provides instant server start, lightning-fast hot module replacement, and optimized production builds through Rollup.

### Vite Configuration

The React integration is enabled through the official `@vitejs/plugin-react` plugin, as configured in [`frontend/vite.config.ts`](https://github.com/securo-finance/securo/blob/main/frontend/vite.config.ts):

```ts
// vite.config.ts
import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import tailwindcss from 'tailwindcss';

export default defineConfig({
  plugins: [react(), tailwindcss()],
});

```

This configuration:
- Loads `@vitejs/plugin-react` to handle JSX/TSX compilation
- Integrates **Tailwind CSS** through its Vite plugin for styling
- Uses Vite's default esbuild-based transforms for fast development builds

## Key Files Defining the Stack

| File | Purpose |
|------|---------|
| [`frontend/package.json`](https://github.com/securo-finance/securo/blob/main/frontend/package.json) | Declares React 19 (`"react": "^19.2.0"`), React-DOM 19, and the Vite React plugin (`@vitejs/plugin-react`). |
| [`frontend/vite.config.ts`](https://github.com/securo-finance/securo/blob/main/frontend/vite.config.ts) | Configures the Vite build pipeline with React and TailwindCSS plugins. |
| [`frontend/src/App.tsx`](https://github.com/securo-finance/securo/blob/main/frontend/src/App.tsx) | The root React component establishing the application's component tree. |

## Why This Stack Matters for Securo Finance

The React 19 + Vite combination offers specific advantages for a financial application:

- **Fast iteration**: Vite's HMR lets developers see changes instantly without full page reloads
- **React 19 features**: Access to the latest React improvements including better rendering performance and new hooks
- **TypeScript-first**: `.tsx` files throughout enforce type safety for financial calculations and API interfaces
- **Optimized bundles**: Vite's production build produces highly efficient static assets for deployment

## Summary

- Securo's frontend is built with **React 19** and **React-DOM 19**
- **Vite** serves as the build tool and development server, configured in [`frontend/vite.config.ts`](https://github.com/securo-finance/securo/blob/main/frontend/vite.config.ts)
- The **@vitejs/plugin-react** plugin enables JSX/TSX support and React Fast Refresh
- The application root lives in [`frontend/src/App.tsx`](https://github.com/securo-finance/securo/blob/main/frontend/src/App.tsx)
- **Tailwind CSS** is integrated for styling via Vite's plugin system

## Frequently Asked Questions

### Does Securo use Next.js or Create React App?

No. Securo uses **Vite**, not Next.js or Create React App. The build system is explicitly configured in [`frontend/vite.config.ts`](https://github.com/securo-finance/securo/blob/main/frontend/vite.config.ts) using `@vitejs/plugin-react` for React support. This provides faster development builds compared to webpack-based alternatives.

### What version of React does Securo use?

Securo runs **React 19.2.0** or newer, as specified by the `^19.2.0` semver range in [`frontend/package.json`](https://github.com/securo-finance/securo/blob/main/frontend/package.json). This includes React-DOM 19 for DOM rendering operations.

### How does Securo handle styling?

Securo integrates **Tailwind CSS** directly into the Vite build pipeline. The [`frontend/vite.config.ts`](https://github.com/securo-finance/securo/blob/main/frontend/vite.config.ts) imports `tailwindcss` and includes it in the plugins array alongside the React plugin, enabling utility-first styling throughout the component tree.

### Is Securo's frontend written in TypeScript?

Yes. All components use **TSX** (TypeScript JSX) syntax with explicit type annotations. Files like [`frontend/src/App.tsx`](https://github.com/securo-finance/securo/blob/main/frontend/src/App.tsx) demonstrate the TypeScript-first approach, providing compile-time safety for the financial application's data structures.