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[EN] Building Cross-Platform Federated Modules With React, React Native and Re.Pack
[ES] Construcción de Módulos Federados Multiplataforma con React, React Native y Re.Pack

Building Cross-Platform Federated Modules With React, React Native and Re.Pack

Module Federation lets you organize code into federated modules, dynamically loaded at runtime within a host application—a core mechanism behind Super Apps. On the web, this is typically handled with Webpack.

Now, with Re.Pack as a Metro alternative, React Native supports it too. This allows existing native Super Apps to transition to React Native and enables truly cross-platform modules, letting developers use React and JavaScript without concern for where modules run.

In this talk, we’ll explore these possibilities, best practices and real-world examples to help you build efficient, cross-platform Super Apps.

This talk has been presented at React Summit 2025, check out the latest edition of this React Conference.

FAQ

The main topic is building cross-platform super apps using React, React Native, and Reapack, with a focus on micro-frontends and module federation.

Reapack is an alternative bundler for React Native that acts as a compatibility layer on top of Webpack or RSPack, created to provide more diversity and options in bundling for React Native.

Module federation allows for the creation of truly cross-platform applications by enabling dynamic code loading and integration of third-party features, making applications more modular and faster to ship.

Challenges include potential performance issues, managing third-party code security, and the need for a development portal for integrating external modules.

The SDK approach involves creating a context for third-party developers to implement features following the host's UI and security standards, making integration easier and more decoupled.

Companies can separate federated modules into different React Native environments to prevent malicious code from affecting the host application, using APIs like postMessage for communication.

Reapack V5 significantly closed the performance gap with Metro, the default React Native bundler, by migrating to RSPack, resulting in improved build times and performance.

Developers can experiment with module federation in React Native by using Reapack, exploring the provided GitHub setup, and utilizing the SDK approach for integrating third-party modules.

Module federation allows independent applications to work together by allowing a host application to include multiple smaller remote applications. This enables dynamic updates and loading of applications without affecting the host app.

The speaker is the CDO and founder at ColdStack, who has been working with React Native for 10 years. They can be found under Grubhub on various platforms.

react native frameworks

Mike Grabowski

28 min

13 Jun, 2025

Comments

Video Summary and Transcription

Introduction to building cross-platform super apps with React, React Native, and Repack. Discussion on leveraging module federation for cross-platform applications and the benefits of Repack, React Native, and module federation. Explanation of module federation's potential in React Native with Repack. Importance of Repack as an alternative bundler for React Native and the significance of sharing infrastructure. Overview of Repack V5's compatibility with React Native, migration benefits, and cross-platform micro-frontends. Integration of federated modules in React Native for seamless standalone module integration. Configuring flexible federated module dependencies with RSPack, Zephyr Cloud for versioning, and lazy loading. Integrating SDK for decoupled module development and enhancing federated module UI flexibility. Challenges and benefits of integrating external modules in React Native. Improving application development speed with Module Federation and Repack for faster deployment.

Available in Español: Construcción de Módulos Federados Multiplataforma con React, React Native y Re.Pack

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