theme-app-extension

Scaffold, deploy and install a Shopify app on Firebase in one command. Cloud Functions, Firestore, Hosting, Polaris web components and App Bridge. No framework, no server.

Drop-in polyfill that makes Shopify's official Standard Storefront Events fire on themes that don't yet dispatch them natively. Intercepts /cart/(add|change|update|clear).js and dispatches shopify:cart:lines-update / note-update / discount-update / error using the platform-hosted event classes.

Shopify拡張のみで日本の贈答EC向け「のし・ギフト対応」を実装したextension-only app（Theme App Extension / Admin UI Extension / Shopify Functions）

Per-item gift wrapping for Shopify — Theme App Extension that auto-syncs wrap colours from your product variants, removes orphaned wraps on cart changes, and supports personalised gift messages. Works on all plans.

Enterprise-Grade Shopify YMMTE Fitment System — cascading Year/Make/Model/Trim/Engine vehicle selector, merchant admin with billing & analytics, on Ruby on Rails 7.2

Shopify customizations that survive theme updates — the wrong way vs the right way (app blocks + metafields), with working code. FR/EN.