TYPES.js

token {
    address,
    symbol
}
market { // a trade place of 2 tokens; a quote token, and a non-quote token
    Id // nonQuoteToken.symbol + ‘-’ + quoteToken.symbol
    sells: order[],
    buys: order[]
}
order *{
    Id,
    type, // ‘buy/sell’; **
    makerToken: {..
    },
    takerToken: {..
    },
    makerTokenAmount,
    takerTokenAmount,
    rate // *** 
}