Steem.js

A modern JavaScript/TypeScript library for interacting with the Steem blockchain. Complete refactoring with TypeScript, modern tooling, and improved security.

👉 Complete API Documentation - Comprehensive guide with all methods, examples, and usage patterns

API routing (condenser_api vs database_api) - How RPC namespaces map to current Steem nodes (v1.0.16+)

📋 Changelog - Version history and breaking changes

🔧 Refactoring Details - Technical details about the 2025 modernization

🚀 Quick Start

Requirements

• Node.js: >= 20.19.0 (LTS recommended)
• Browser: Modern browsers with Web Crypto API support

Installation

# npm
npm install @steemit/steem-js
pnpm (recommended)
pnpm install @steemit/steem-js
yarn
yarn add @steemit/steem-js

Basic Usage

import { steem } from '@steemit/steem-js';
// Configure API endpoint
steem.config.set({
  nodes: ['https://api.steemit.com'],
  address_prefix: 'STM'
});
// Get account information
const accounts = await steem.api.getAccountsAsync(['username']);
console.log(accounts[0]);
// Vote on a post
const postingWif = steem.auth.toWif('username', 'password', 'posting');
await steem.broadcast.voteAsync(postingWif, 'voter', 'author', 'permlink', 10000);

Browser Usage

<script src="https://cdn.jsdelivr.net/npm/@steemit/steem-js/dist/index.umd.min.js"></script>
<script>
  steem.config.set({ nodes: ['https://api.steemit.com'] });
  steem.api.getAccountsAsync(['username']).then(console.log);
</script>

✨ Key Features

• 🔗 Correct RPC routing - Legacy read APIs use condenser_api; chain/validation APIs use database_api (v1.0.16+, aligned with steem)
• 🔒 Type Safety - Full TypeScript support with complete type definitions
• ⚡ Modern - ES modules, async/await, modern cryptography libraries
• 🌐 Universal - Works in Node.js, browsers, and bundlers
• 🔐 Secure - Proper cryptographic implementations, no key exposure
• 📖 Well Documented - Comprehensive API documentation with examples

🏗️ Development

# Install dependencies
pnpm install
Build the library
pnpm build
Run tests
pnpm test
Type checking
pnpm typecheck

📦 What's New in 2025

This is a complete modernization of the original steem-js library:

• ✅ TypeScript Migration - Full type safety and better developer experience
• ✅ Modern Dependencies - Replaced outdated crypto libraries (bigi → bn.js, ecurve → elliptic)
• ✅ Modern Crypto - Using @noble/hashes and @noble/ciphers for universal browser/Node.js compatibility
• ✅ Build System - Migrated from Webpack to Rollup for better output
• ✅ Testing - Migrated from Mocha to Vitest with 95.8% test coverage
• ✅ Security - Fixed insecure random number generation and crypto implementations

📋 Project Structure

src/
├── api/          # Blockchain API client (HTTP; methods.ts → condenser_api / database_api / …)
├── auth/         # Authentication and key management
├── broadcast/    # Transaction broadcasting
├── crypto/       # Cryptographic utilities
├── formatter/    # Data formatting helpers
├── memo/         # Encrypted memo handling
├── operations/   # Operation type definitions
├── serializer/   # Transaction serialization
└── utils/        # Utility functions

🔗 Links

• 📖 API Documentation - Complete method reference
• 🔧 Refactoring History - Technical modernization details
• 📦 NPM Package - Published package
• 🐛 Issues - Bug reports and feature requests

📄 License

MIT - see LICENSE file for details.

💡 Need help? Check the complete documentation for detailed examples and API reference.