Callstack • Dec 25, 2021

Using External JavaScript Libraries in React Native

Article Summary

Callstack explores a critical question for React Native teams: when can you safely use JavaScript libraries built for the web, and when do you need native alternatives?

This practical guide from Callstack breaks down the compatibility landscape between web JavaScript libraries and React Native. It helps developers understand which libraries work out of the box and which require native implementations.

Key Takeaways

Pure JavaScript libraries (like Lodash) work seamlessly in React Native
DOM-dependent libraries require React Native alternatives or polyfills
Node.js-specific packages need careful evaluation before integration
Community packages often provide native equivalents for web libraries

Critical Insight

Most pure JavaScript libraries work in React Native, but DOM or Node.js dependencies require native alternatives or custom bridging solutions.

The article includes a decision framework for evaluating any JavaScript library before adding it to your React Native project.

About This Article

Problem

React Native developers often can't tell if external JavaScript packages will work in their projects. Many libraries built for the web rely on DOM or Node.js features that don't exist on mobile, causing things to break.

Solution

Callstack created a guide that helps developers evaluate libraries systematically. It sorts packages into three categories: pure JavaScript, DOM-dependent, and Node.js-specific. This makes it easier to spot compatibility issues early and find native alternatives or polyfills when needed.

Impact

Teams that use this approach catch incompatibilities before they start building. This saves time and money by avoiding failed integrations and rewrites later on.