Installation

Requirements

• Node.js 22 or newer
• An ESM TypeScript project
• Effect 4.0.0-beta.105

Install

npm install @byfungsi/sapa effect@4.0.0-beta.105

Or with pnpm:

pnpm add @byfungsi/sapa effect@4.0.0-beta.105

SAPA pins its Effect peer dependency exactly. Install the matching version so service tags, Layers, Schemas, and Effect values share one runtime.

Verify the package boundary

Create a small ESM module:

verify-sapa.ts

import { Offer } from "@byfungsi/sapa";

console.log(typeof Offer.parse);

Run it with your TypeScript execution setup or compile it with your project. Only import consumer APIs from @byfungsi/sapa; package-private @sapa/* modules are implementation boundaries and are not supported consumer imports.

Continue

Define your first checked offer in the quickstart.