@tradeb0t/core v0.4.1

tradeb0t/core 🤖

Core functionality for creating trading bots for exchanges.

See tradeb0t

Getting started

Install core:

npm install @tradeb0t/core

Describe your domain

Domain includes types of entities in the integrated exchange.

Technically, you can provide any types for DomainTemplate. But it is not recommended, as these types will be helpful in process of creating other modules.

import {DomainTemplate} from '@tradeb0t/core'
import {
    CurrencyType,
    CurrencyBalanceType,
    SecurityType,
    SecurityBalanceType,
    OrderType
} from '@exchange/sdk'

// Order of arguments matters
export type Domain = DomainTemplate<CurrencyType, CurrencyBalanceType, SecurityType, SecurityBalanceType, OrderType>

Implement ExchangeConnector

ExchangeConnector is layer between exchange and tradebot internal logic.

It also includes two submodules for splitting logic:

• InfoModule - get different information from exchange;
• TradeModule - send requests to place orders to exchange;
• DomainMapper - for translation exchange types to tradebot types.

You can access ExchangeConnector instance with this.exchangeConnector from these modules.

Note, that you can provide object containing API methods to exchange (API in example). It will be available in ExchangeConnector instance as api.

DomainMapper

Also, you should implement DomainMapper to make it possible for tradebot to understand types of your exchange.

Internal domain of tradebot is provided by CommonDomain type in core library.

import {OperationType, OrderStatus, CommonDomain,
    AbstractDomainMapper,
    GetCurrencyBalanceType,
    GetCurrencyType,
    GetOrderType,
    GetSecurityBalanceType,
    GetSecurityType} from '@tradeb0t/core'
import type API from '@exchange/sdk'

import {Domain} from "../Domain";
export class DomainMapper extends AbstractDomainMapper<Domain, API>{
    async currency(currency: GetCurrencyType<Domain>): Promise<GetCurrencyType<CommonDomain>>{
        //...
    }
    //...
}

Note, that you can extract specific domains types from Domain or ExchangeConnector with following generic types:

• GetCurrencyType<T>
• GetCurrencyBalanceType<T>
• GetSecurityType<T>
• GetSecurityBalanceType<T>
• GetOrderType<T>

InfoModule

import {AbstractInfoModule} from '@tradeb0t/core'
import type API from '@exchange/sdk'

import {Domain} from '../Domain'

export class InfoModule extends AbstractInfoModule<Domain, API>{/*...*/}

TradeModule

import {AbstractTradeModule} from '@tradeb0t/core'
import type API from '@exchange/sdk'

import {Domain} from '../Domain'

export class TradeModule extends AbstractTradeModule<Domain, API>{/*...*/}

ExchangeConnector

import {AbstractExchangeConnector} from '@tradeb0t/core'
import API from '@exchange/sdk'

import {Domain} from '../Domain'
import {TradeModule} from './TradeModule'
import {InfoModule} from './InfoModule'
import {DomainMapper} from "./DomainMapper"

export class ExchangeConnector extends AbstractExchangeConnector<Domain, API>{
    protected async initAccount(){
        const { api } = this
        // Something to prepare your client
        this.isAccountInitialized = true
    }

    async getPortfolio() {/*...*/}

    async getCurrenciesBalance() {/*...*/}
}

Start tradebot

Finally, start tradebot with runTradeBot function:

import {runTradeBot} from '@tradeb0t/core'
import API from '@exchange/sdk'

import { DomainMapper, ExchangeConnector, InfoModule, TradeModule } from './bot'
import {initAlgorithms} from './algorithms'

runTradeBot({
  ExchangeConnector: new ExchangeConnector({
    modules: {
      domainMapper: new DomainMapper(),
      infoModule: new InfoModule(),
      tradeModule: new TradeModule()
    },
    api: API
  }),
  initAlgorithmsCallback: initAlgorithms,
  config: {
    // ...
  }
})