FastStore has undergone significant optimizations to improve mobile performance, achieving a Lighthouse score improvement from 64 to 95.

The main focus of these enhancements is on optimizing the homepage experience for mobile users. Below are the key changes introduced:

FastStore now supports Preact, a lightweight alternative to React that improves performance by reducing the JavaScript bundle size.

After updating your FastStore project version to 3.0.112 or later, see the Improving store performance with Preact guide to enable Preact.

Libraries like chalk and nextjs-progressbar have been removed from the codebase to reduce the initial bundle size.

Lazy loading has been implemented for sections outside the viewport, such as CartSidebar and RegionModal, improving initial load times. This feature currently works only for native sections.

Several techniques have been implemented to enhance loading speeds and responsiveness:

• Preconnect and prefetch: Browser directives that establish early connections to external resources (fonts, images) and prioritize their fetching, resulting in faster loading times.
• Dynamic imports: Using next/dynamic to load components efficiently, reducing the impact on initial page load size.
• On-demand analytics: Analytics scripts, triggered by the sendAnalyticsEvent method, are now dynamically imported from the faststore/sdk library. This ensures that these scripts are loaded only when needed, reducing the initial payload size.

This release brings significant improvements to mobile performance, ensuring FastStore delivers a consistently high-quality experience across all devices. Desktop performance remains robust, and mobile users will now benefit from enhanced speed and responsiveness.

These improvements are available in FastStore version 3.0.112. To take advantage of these updates, follow these steps:

1. Open your FastStore project using your preferred code editor.

2. Update your FastStore project to version 3.0.112 or later by running the following:

   
   

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   yarn upgrade -L --scope @faststore

   
   

3. Run yarn build.