@synthra-swap/sdk-core

⚒️ Core SDK for building applications on top of Synthra-swap V3

A robust and type-safe TypeScript SDK that provides the fundamental entities, utilities, and types needed to interact with the Synthra-swap protocol. This package serves as the foundation layer for all other Synthra-swap SDKs.

🚀 Features

• Core Entities: Classes for Token, Currency, CurrencyAmount, Price, Fraction, and Percent
• Trading Utilities: Functions for price calculations, address validation, and impact analysis
• Type Safety: Complete TypeScript typing for enhanced development safety
• Multi-Chain Support: Support for Ethereum and compatible networks
• Precise Mathematics: Accurate decimal handling and financial calculations
• Tree Shakable: Modular imports for optimized bundle sizes

📦 Installation

npm install @synthra-swap/sdk-core

yarn add @synthra-swap/sdk-core

pnpm add @synthra-swap/sdk-core

🛠️ Basic Usage

Importing Entities

import {
  Token,
  CurrencyAmount,
  Price,
  Percent,
  Fraction
} from '@synthra-swap/sdk-core'

Creating a Token

import { Token, ChainId } from '@synthra-swap/sdk-core'

const USDC = new Token(
  ChainId.MAINNET,
  '0xA0b86a33E6441c8442a4F5d4c6d8dcFc7a3e9dc5',
  6,
  'USDC',
  'USD Coin'
)

Working with Amounts

import { CurrencyAmount, Token } from '@synthra-swap/sdk-core'

// Create an amount of 100.5 USDC
const amount = CurrencyAmount.fromRawAmount(USDC, '100500000')

// Or from a decimal string
const amountFromString = CurrencyAmount.fromFractionalAmount(
  USDC,
  '100.5',
  '1'
)

console.log(amount.toFixed()) // "100.500000"

Price Calculations

import { Price, Token } from '@synthra-swap/sdk-core'

const price = new Price(
  tokenA,
  tokenB,
  '1000000000000000000', // 1 tokenA
  '2000000000000000000'  // = 2 tokenB
)

console.log(price.toFixed(4)) // "2.0000"

Working with Percentages

import { Percent } from '@synthra-swap/sdk-core'

// Create a 2.5% percentage
const slippage = new Percent('25', '1000') // 25/1000 = 2.5%

// Or from basis points
const fee = new Percent('30', '10000') // 30 basis points = 0.3%

📚 API Reference

Core Entities

Token

Represents an ERC20 token with its essential properties.

constructor(
  chainId: number,
  address: string,
  decimals: number,
  symbol?: string,
  name?: string
)

CurrencyAmount

Represents an amount of a specific currency with decimal precision.

static fromRawAmount(currency: Currency, rawAmount: JSBI): CurrencyAmount
static fromFractionalAmount(currency: Currency, numerator: JSBI, denominator: JSBI): CurrencyAmount

Price

Represents the price of one currency in terms of another.

constructor(
  baseCurrency: Currency,
  quoteCurrency: Currency,
  denominator: JSBI,
  numerator: JSBI
)

Percent

Extends the Fraction class to represent percentages.

constructor(numerator: JSBI, denominator: JSBI)

Utilities

validateAndParseAddress

Validates and normalizes an Ethereum address.

function validateAndParseAddress(address: string): string

computePriceImpact

Calculates the price impact of a swap.

function computePriceImpact(
  midPrice: Price,
  inputAmount: CurrencyAmount,
  outputAmount: CurrencyAmount
): Percent

🔗 Chain Support

The SDK supports the following chains:

• Ethereum Mainnet (ChainId: 1)
• Polygon (ChainId: 137)
• Arbitrum One (ChainId: 42161)
• Optimism (ChainId: 10)
• Base (ChainId: 8453)

🧪 Testing

npm test

The project includes comprehensive tests for all core functionality.

🤝 Contributing

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

📄 License

This project is released under the MIT License. See the LICENSE file for more details.

🔗 Related Resources

• Synthra-swap Protocol Documentation
• TypeScript Documentation
• Ethereum Development

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Disclaimer: This software is provided "as is" without warranty of any kind. Use at your own risk.wap/sdk-core - Now at Uniswap/sdks

All versions after 4.2.0 of this SDK can be found in the SDK monorepo! Please file all future issues, PR’s, and discussions there.

Old Issues and PR’s

If you have an issue or open PR that is still active on this SDK in this repository, please recreate it in the new repository. Some existing issues and PR’s may be automatically migrated by the Uniswap Labs team.