ChinaFastChina infrastructure for TypeScript.

Runtime-safe packages for web, Expo, and Node.js.

ChinaFast

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Cross-runtime by design

Shared contracts across web, Expo, and Node.js so packages feel consistent everywhere.

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Safe server boundaries

Client packages receive public configuration only. Secrets, signatures, and webhook verification stay on your server.

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Built for real WeChat flows

Auth redirects, mobile handoff, payment callbacks, and platform quirks are handled cleanly.

Our Packages

@chinafast/web-wechat-authBrowser-based WeChat OAuth helpers for web apps.@chinafast/expo-wechat-authNative WeChat login support for Expo and React Native apps.@chinafast/server-wechat-authServer-side token exchange, verification, and trusted auth helpers.@chinafast/web-wechat-payClient helpers for JSAPI, H5, and browser payment entry points.@chinafast/expo-wechat-payNative WeChat Pay helpers for Expo and React Native apps.@chinafast/server-wechat-payServer-side payment creation, signing, webhook verification, and API helpers.