MoltData Transformation Stack

Why Choose Molt? ​

Molt is a comprehensive data transformation stack built for performance-critical applications. Each package is optimized for real-world use cases with battle-tested algorithms and zero compromise on reliability.

🏆 Performance Leaders ​

• molt-yaml: Dominates YAML parsing (2-415x faster)
• molt-toml: Clear TOML performance winner (2-9x faster)
• molt-json: Best-in-class JSON serialization (1.7-2.3x faster)
• molt-ini: Fast INI configuration (2-3x faster)
• molt-csv: Highly competitive CSV parsing (top-tier performance)
• molt-xml: Matches fastest parsers with unique dirty XML support
• molt-msgpack: Competitive binary format (20-50% smaller than JSON)
• molt-toon: LLM-optimized format (30-60% token savings)

🚀 Get Started in Seconds ​

Install individual packages for only what you need:

# JSON transformation
npm install @sylphx/molt-json

# YAML processing
npm install @sylphx/molt-yaml

# TOML configuration
npm install @sylphx/molt-toml

# INI configuration
npm install @sylphx/molt-ini

# CSV data handling
npm install @sylphx/molt-csv

# XML parsing
npm install @sylphx/molt-xml

# MessagePack binary format
npm install @sylphx/molt-msgpack

# TOON (LLM-optimized)
npm install @sylphx/molt-toon

# Or install all formats
npm install @sylphx/molt

💪 Production Ready ​

• 120+ comprehensive test cases per package
• Type-safe TypeScript APIs with strict mode
• Streaming support for large files
• Schema validation (Zod, JSON Schema)
• Battle-tested by real-world applications

Quick Examples ​

JSON with Type Preservation ​

import { molt } from '@sylphx/molt-json'

const data = molt(`{
  user: 'alice',
  joined: new Date(),
  settings: new Map([['theme', 'dark']])
}`)

// Types are preserved!
data.joined instanceof Date  // true

YAML Ultra-Fast ​

import { parse, stringify } from '@sylphx/molt-yaml'

const config = parse(`
  database:
    host: localhost
    port: 5432
    credentials:
      username: admin
      password: secret
`)

console.log(stringify(config))

TOML Configuration ​

import { parse } from '@sylphx/molt-toml'

const toml = parse(`
[package]
name = "my-app"
version = "1.0.0"

[dependencies]
react = "^18.0.0"
`)

CSV Data Processing ​

import { parse, stringify } from '@sylphx/molt-csv'

const records = parse(`
name,age,city
Alice,30,New York
Bob,25,San Francisco
`)

stringify(records)

INI Configuration ​

import { molt } from '@sylphx/molt-ini'

const config = molt(`
[database]
host = localhost
port = 5432

[server]
timeout = 30
`)

console.log(config.database.port) // 5432

MessagePack Binary ​

import { encode, decode } from '@sylphx/molt-msgpack'

const data = { user: 'alice', score: 9999 }

// Encode to binary (20-50% smaller than JSON)
const binary = encode(data)

// Decode back to JavaScript
const restored = decode(binary)

TOON for LLMs ​

import { stringify } from '@sylphx/molt-toon'

const data = {
  users: [
    { id: 1, name: 'Alice', role: 'admin' },
    { id: 2, name: 'Bob', role: 'user' }
  ]
}

// 30-60% fewer tokens!
console.log(stringify(data))
// Output:
// users:
//   id | name  | role
//   1  | Alice | admin
//   2  | Bob   | user

All Packages ​

Documentation ​

• Guide - Getting started and core concepts
• Installation - Setup instructions for all packages
• Quick Start - Common examples for each format
• Benchmarks - Detailed performance comparisons
• Packages - Individual package documentation

Contributing ​

We welcome contributions! Check out our Contributing Guide for details on how to help.

License ​

MIT © Sylphx

Built with ❤️ for performance