Installation

Requirements

• Node.js 18.0.0 or higher
• A package manager (pnpm, npm, or yarn)

Install the Package

pnpm

pnpm add @no-witness-labs/midday-sdk

npm

npm install @no-witness-labs/midday-sdk

yarn

yarn add @no-witness-labs/midday-sdk

Peer Dependencies

Midday SDK includes all necessary dependencies. However, if you’re using the Effect API, you may want to install Effect explicitly for better IDE support:

pnpm add effect

TypeScript Configuration

Midday SDK is written in TypeScript and ships with type definitions. For the best experience, ensure your tsconfig.json includes:

{
  "compilerOptions": {
    "moduleResolution": "bundler",
    "target": "ES2022",
    "module": "ESNext",
    "strict": true
  }
}

Browser vs Node.js

Midday SDK works in both environments, but there are some differences:

Feature	Node.js	Browser
Wallet	Seed-based HD wallet	Lace wallet extension
Private State	In-memory or file-based	IndexedDB
ZK Config	Local or HTTP provider	HTTP provider

Next Steps

Now that you have Midday SDK installed, head to the Quick Start guide to create your first client.