A Lightweight and Trustworthy URL Polyfill for React Native

A Lightweight and Trustworthy URL Polyfill for React Native

React Native URL Polyfill .A lightweight and trustworthy URL polyfill for React Native

React Native URL Polyfill

A lightweight and trustworthy URL polyfill for React Native

react-native-url-polyfill is a full implementation of the WHATWG URL Standard optimized for React Native.

  • Lightweight. Uses a forked version of whatwg-url (whatwg-url-without-unicode) where unicode support has been stripped out — Going down from 372 KB to 40.9 KB.
  • Trustworthy. Follows closely the URL Standard spec, and relys on unit tests and Detox e2e tests within React Native.
  • Blob support. Supports React Native's Blob without additional steps.
  • Hermes support. Supports Hermes, a JavaScript engine optimized for running React Native on Android.

Why do we need this?

React Native does include a polyfill for URL, but this polyfill is homemade — in order to keep it light-weight — and was initially created to handle specific use cases.

Meanwhile, React Native has grown around that polyfill, then some unexpected errors have arisen.

Known issues (non-exhaustive) with React Native's URL are:

Unfortunately, adding react-native-url-polyfill to React Native source code will means adding đŸ“Ļ 74.94 KB (as of RN 0.63) to the JavaScript bundle.

That's why you may need this external dependency. So, if you use URL within your app, you probably want to take a look at the installation steps below!


First, you need to install the polyfill, which can be done with Yarn or npm.

yarn add react-native-url-polyfill
npm install --save react-native-url-polyfill

Then, the polyfill can be used in multiple ways. Pick your preferred option.

ℹī¸ To verify if the polyfill has been correctly applied, you can check if the global variable REACT_NATIVE_URL_POLYFILL contains the current package and version like: [email protected]_VERSION.

Option 1 (Simple)

Locate your JavaScript entry-point file, commonly called index.js at the root of your React Native project.

Then, import react-native-url-polyfill/auto at the top of your entry-point file, the polyfill will be automatically applied.

import 'react-native-url-polyfill/auto';

Option 2 (Flexible)

If you want to apply the polyfill when you're ready, you can import setupURLPolyfill and call it yourself.

⚠ī¸ Metro doesn't support optional imports.

If you do not apply the polyfill, it will still be added to your JavaScript bundle. Even if it's wrapped in a condition, Metro won't strip it in production.

import { setupURLPolyfill } from 'react-native-url-polyfill';


Option 3 (Convenient)

If you prefer not to apply this polyfill over React Native's default URL, you can still import those classes manually when you want them.

import { URL, URLSearchParams } from 'react-native-url-polyfill';

const url = new URL('https://github.com');
const searchParams = new URLSearchParams('q=GitHub');

Download Details:

Author: charpeni

Source Code: https://github.com/charpeni/react-native-url-polyfill

react-native react mobile-apps

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

How native is React Native? | React Native vs Native App Development

Article covers: How native is react native?, React Native vs (Ionic, Cordova), Similarities and difference between React Native and Native App Development.

React Native Mobile App Development

Skenix is providing React Native Development Services with qualified React Native App Developers. Get the best React Native App Development Services.

How React Native Is Shaping Mobile App Development

Are you a mobile app developer looking for more efficient tools for your projects? Mobile app development is getting tougher and tougher as the market continues to grow. As a developer, you need to develop Apps which meet the demands of your users. To achieve this, adopt the right tools, like the React Native development framework.

Top React Native Mobile App Development Companies in USA

Looking for top React Native mobile app development company in USA for Startups & Enterprise? Find out the top list of React Native mobile app development company in USA.

Which is the best React Native app development company in New York?

Hire top react native app development company in New York to build and develop custom react native mobile apps for Android & iOS with the latest features.