Engineering Leadership InfoQ · 2026-10-09T15:01:00Z · 1 min read

Shopify Upgrades Checkout Blocks to Polaris Web Components, Cutting Bundle Sizes up to 85%

Shopify has updated its Checkout Blocks app, transitioning five high-traffic checkout UI extensions to remote-dom using Preact and Polaris web components. The rewrite, which involved moving to TypeScript and a new API version, led to significant reductions in bundle sizes and load times. From October 1, 2026, only the updated versions will be supported. By Daniel Curtis

Read original on InfoQ