ccxtExchangesMethods.js

const ccxt = require('ccxt')
const methodsExchangeHas = (exchange) => {
    const exchangeObject = new ccxt[exchange]
    const methods = exchangeObject.has
    return methods
}
const japanExchanges = [
    'bitbank',
    'bitflyer',
    'coincheck',
    'liquid',
    'zaif'
]
const japanExchangesMethods = japanExchanges.map((exchange) => {
    const methods = methodsExchangeHas(exchange)
    const object = new Object()
    object[exchange] = methods
    return object
})
console.log(japanExchangesMethods)