Latest API Documentation

<script src="https://unpkg.com/rubic-sdk@latest/dist/rubic-sdk.min.js"></script>

1. npm install rubic-sdk

ℹ️️ Skip the rest of the steps if your have already installed web3 in your project.

2. npm install --save-dev http-browserify https-browserify stream-browserify crypto-browserify
3. modify webpack.config.js. If you use create-react-app, run npm run eject to extract config
   1. add to plugins

      new webpack.ProvidePlugin({
        Buffer: ['buffer', 'Buffer'],
        process: 'process/browser'
      })

   2. add resolve.fallback

      "fallback": {
        "fs": false,
        "constants": false,
        "querystring": false,
        "url": false,
        "path": false,
        "os": false,
        "http": require.resolve("http-browserify"),
        "https": require.resolve("https-browserify"),
        "zlib": false,
        "stream": require.resolve("stream-browserify"),
        "crypto": require.resolve("crypto-browserify"),
        "zlib": require.resolve('browserify-zlib')
      }

1. npm install rubic-sdk

ℹ️️ Skip the rest of the steps if your have already installed web3 in your project.

2. npm install --save-dev stream-browserify assert https-browserify os-browserify stream-http crypto-browserify process buffer
3. Modify tsconfig.json

   {
     "compilerOptions": {
       ...
       "paths" : {
         ...
         "stream": ["./node_modules/stream-browserify"],
         "assert": ["./node_modules/assert"],
         "https": ["./node_modules/https-browserify"],
         "os": ["./node_modules/os-browserify"],
         "http": ["./node_modules/stream-http"],
         "crypto": ["./node_modules/crypto-browserify"]
     }
   }

4. Modify polyfills.ts

   import Process = NodeJS.Process;
   
   export interface AppWindow extends Window {
     process: Process;
     Buffer: Buffer;
     global?: unknown;
   }
   
   (window as AppWindow).global = window;
   (window as AppWindow).process = window.process || require('process');
   (window as AppWindow).Buffer = (window as any).Buffer || require('buffer').Buffer;

 <script>
        // you have to declare rpc links only for networks you will use
        const configuration = {
            rpcProviders: {
                ETH: {
                    rpcList: ['<your ethereum rpc>']
                },
                BSC: {
                    rpcList: ['<your bsc rpc>']
                },
                ...
                TRON: {
                    rpcList: [
                      {
                        fullHost: '<tron-api>',
                        headers: { "TRON-PRO-API-KEY": 'your api key' }
                      }
                    ]
                }
            },
            // if you are whitelisted integrator, provide your wallet address here
           providerAddress: {
              [CHAIN_TYPE.EVM]: {
                 crossChain: '0x0000000000000000000000000000000000000000', // Address for cross chain fee
                 onChain: '0x0000000000000000000000000000000000000000' // Address for on chain fee
              }
           }
        }
        
        async function main() {
            // create SDK instance
            const sdk = await RubicSDK.SDK.createSDK(configuration);
            
            // define example trade parameters
            const blockchain = 'ETH';
            const fromTokenAddress = '0x0000000000000000000000000000000000000000';
            const fromAmount = 1;
            const toTokenAddress = '0xdac17f958d2ee523a2206206994597c13d831ec7';
            
            // calculate trades
            const trades = await sdk.onChainManager
                .calculateTrade({blockchain, address: fromTokenAddress}, fromAmount, toTokenAddress);
            
            console.log(trades);
        }
        main();
    </script>

1. Create configuration

   import { Configuration, BLOCKCHAIN_NAME } from 'rubic-sdk';
   
   // you have to declare rpc links only for networks you will use
   export const configuration: Configuration = {
       rpcProviders: {
           [BLOCKCHAIN_NAME.ETHEREUM]: {
               rpcList: ['<your ethereum rpc #1>', '<your ethereum rpc #2>', ...]
           },
           [BLOCKCHAIN_NAME.BINANCE_SMART_CHAIN]: {
               rpcList: ['<your bsc rpc>']
           },
           ...
           [BLOCKCHAIN_NAME.TRON]: {
               rpcList: [
                   {
                       fullHost: '<tron api>',
                       headers: { "TRON-PRO-API-KEY": 'your api key' }
                   }
               ]
           }
       },
       // if you are whitelisted integrator, provide your wallet address here
       providerAddress: {
             [CHAIN_TYPE.EVM]: {
                crossChain: '0x0000000000000000000000000000000000000000', // Address for cross chain fee
                onChain: '0x0000000000000000000000000000000000000000' // Address for on chain fee
             }
       }
   }

2. Create sdk instance

   import { SDK } from 'rubic-sdk';
   
   const sdk = await SDK.createSDK(configuration);

3. Use sdk instance for trade calculation

   import { BLOCKCHAIN_NAME, TradeType, OnChainTrade, EvmOnChainTrade } from 'rubic-sdk';
   
   const blockchain = BLOCKCHAIN_NAME.ETHEREUM;
   const fromTokenAddress = '0x0000000000000000000000000000000000000000'; // ETH
   const fromAmount = 1;
   const toTokenAddress = '0xdac17f958d2ee523a2206206994597c13d831ec7'; // USDT
   
   const trades = await sdk.onChainManager.calculateTrade(
       { blockchain, address: fromTokenAddress }, 
       fromAmount,
       toTokenAddress
   );
   const bestTrade = trades[0];
   
   trades.forEach(trade => {
       const tradeType: TradeType = trade.type;
       console.log(`trade type: ${tradeType}`);
   
       if (trade instanceof OnChainTrade) {
           console.log(`to amount: ${trade.to.tokenAmount.toFormat(3)}`);
       } else {
          console.log(`error: ${trade.error}`);
       }
       
       // explore trades info
       if (trade instanceof EvmOnChainTrade) {
           console.log(`Gas fee: ${bestTrade.gasFeeInfo}`);
       }
       ...
   });

4. When user connects wallet (e.g. MetaMask) you should change configuration to use trade swap method.
   ⚠️ Recalculate trades after this.

   import { WalletProvider, CHAIN_TYPE, Configuration } from 'rubic-sdk';
   
   const walletProvider: WalletProvider = {
       [CHAIN_TYPE.EVM]: {
           address: '0x123...', // user wallet address
           core: window.ethereum
       },
       [CHAIN_TYPE.TRON]: {
           address: 'T123...', // user wallet address
           core: window.tronLink.tronWeb // or window.tronWeb
       }
   };
   
   // initial configuration example
   const configuration: Configuration = {
       ...
       walletProvider
   }
   const sdk = await SDK.createSDK(configuration);
   
   // after user's wallet address changed
   // Example #1: 
   sdk.updateWalletProvider(walletProvider);
   
   // Example #2:
   sdk.updateWalletAddress(CHAIN_TYPE.EVM, address);

5. Now you can use swap method of trade instance. Approve transaction will be sent automatically if needed.

   const onConfirm = (hash: string) => console.log(hash);
   
   // check that trade is defined
   сonst bestTrade = trades[0];
   const receipt = await bestTrade.swap({ onConfirm });

Steps 1. and 2. are the same. You can use single sdk instance for on-chain trades and cross-chain swaps calculations.

3. Use sdk instance for trade calculation

   import { BLOCKCHAIN_NAME } from 'rubic-sdk'; 
   import { EvmCrossChainTrade } from "./evm-cross-chain-trade";
   
   const fromBlockchain = BLOCKCHAIN_NAME.ETHEREUM;
   const fromTokenAddress = '0x0000000000000000000000000000000000000000'; // ETH
   const fromAmount = 1;
   const toBlockchain = BLOCKCHAIN_NAME.BINANCE_SMART_CHAIN;
   const toTokenAddress = '0xe9e7cea3dedca5984780bafc599bd69add087d56'; // BUSD
   
   const wrappedTrades = await sdk.crossChainManager.calculateTrade(
       { blockchain: fromBlockchain, address: fromTokenAddress }, 
       fromAmount,
       { blockchain: toBlockchain, address: toTokenAddress }
   );
   
   wrappedTrades.forEach(wrappedTrade => {
       const tradeType: TradeType = wrappedTrade.type;
       console.log(`trade type: ${tradeType}`);
       
       if (wrappedTrade.error) {
           console.log(`error: ${wrappedTrade.error}`);
       } else {
           const trade = wrappedTrade.trade!;
           console.log(`to amount: ${trade.to.tokenAmount.toFormat(3)}`);
   
           // explore trades info
           if (trade instanceof EvmCrossChainTrade) {
               console.log(trade.gasData)
           }
           ...
       }
   }) 

4. Same as in on-chain.

5. Now you can use swap method of trade instance. Approve transaction will be sent automatically if needed.

   const onConfirm = (hash: string) => console.log(hash);
   
   // check, that trade is defined
   const bestTrade = wrappedTrades[0].trade;
   const receipt = await bestTrade.swap({ onConfirm });

You can use specific sdk Token classes to work with tokens.

import { BLOCKCHAIN_NAME } from 'rubic-sdk';

const token: Token = await Token.createToken({ 
    blockchain: BLOCKCHAIN_NAME.ETHEREUM,
    address: '0xdac17f958d2ee523a2206206994597c13d831ec7'
});

console.log(token.symbol); // USDT
console.log(token.name); // Tether USD
console.log(token.decimals); // 6

You can also use constructor directly.

import { BLOCKCHAIN_NAME } from 'rubic-sdk';

const token = new Token({
   blockchain: BLOCKCHAIN_NAME.ETHEREUM,
   address: '0xdac17f958d2ee523a2206206994597c13d831ec7',
   name: 'USD Coin',
   symbol: 'USDC',
   decimals: 6
})

import { BLOCKCHAIN_NAME } from 'rubic-sdk';

const token: PriceToken = await PriceToken.createToken({ 
    blockchain: BLOCKCHAIN_NAME.ETHEREUM,
    address: '0xdac17f958d2ee523a2206206994597c13d831ec7'
});

console.log(token.price);

import { BLOCKCHAIN_NAME } from 'rubic-sdk';

const token: PriceTokenAmount = await PriceTokenAmount.createToken({ 
    blockchain: BLOCKCHAIN_NAME.ETHEREUM,
    address: '0xdac17f958d2ee523a2206206994597c13d831ec7',
    tokenAmount: new BigNumber(1)
});

console.log(token.weiAmount);