order-match

The account book to record the match of order asks and bids.

Install

``sh
$ npm i order-match
`

Usage

`js
const OrderMatch = require('order-match')

const om = new OrderMatch()
`

new OrderMatch()

Creates an acount book of asks and bids

$3

- price number
- amount number

Ask a price

$3

Bid with a price

$3

Returns the plan against the resistance if we want to reach the price level.
- undefined which indicates there is no resistance.
- Object
- action Enum
- orders Array<{price, amount}>

`js
const om = new OrderMatch()

om.ask(100, 50)
om.ask(120, 10)

// Then the asks are:
// price: 120, amount: 10
// price: 100, amount: 50

const plan = om.resistance(130)
console.log(plan.action)
// BID, we need bid orders to buy the asks
console.log(plan.orders)
// [
// {price: 100, amount: 50},
// {price: 120, amount: 50}
// ]
`

$3

Get the current price. The initial price is 0.

$3

Get current asks which is an ascending array of {price, amount} ordered by price

$3

Get current bids which is an decendng array of {price, amount} ordered by price

$3

- e.price number the actual price of the trade
- e.amount number the amount of the trade
- e.type Enum

`js
om.on('trade', e => {
console.log()
})
``

License

MIT