feat: add support for binance.us, cex.io and ftx

lib/plugins/exchange/cex.js

@@ -0,0 +1,21 @@
+const { COINS } = require('lamassu-coins')
+const _ = require('lodash/fp')
+
+const { ORDER_TYPES } = require('./consts')
+
+const ORDER_TYPE = ORDER_TYPES.MARKET
+const { BTC, BCH, DASH, ETH, LTC, USDT } = COINS
+const CRYPTO = [BTC, ETH, LTC, DASH, BCH, USDT]
+const FIAT = ['USD', 'EUR']
+const REQUIRED_CONFIG_FIELDS = ['apiKey', 'privateKey']
+
+const loadConfig = (account) => {
+  const mapper = {}
+  const mapped = _.mapKeys(key => mapper[key] ? mapper[key] : key)(account)
+  return { ...mapped, timeout: 3000 }
+}
+
+// Documentation mentions a field 'nonce', doesn't specify if it's mandatory
+// or not but we should pay attention to this when testing
+
+module.exports = { loadConfig, REQUIRED_CONFIG_FIELDS, CRYPTO, FIAT, ORDER_TYPE }