data-source

data-source for stock data

Install

``sh
$ npm install data-source --save
`

Usage

`js
import DataSource from 'data-source'

const dataSource = new DataSource({
connection: {
host: '127.0.0.1',
user: 'root',
password: '',
database: ''
},
code: 'sz300131',
loader: Loader,

// Whether the given time of the span is trading
// - span: day, will not check hours and minutes
// -
isTrading: ({time, span}) => true
})

const span = dataSource.span('MONTH')

const {
// Number open price
open,
// Number the highest price
high,
// Number the lowest price
low,
// Number the close price
close,
// Number the volume of transactions
volume,
// Date time
time
} = await span.get(new Date(2017, 4, 1))

console.log(sz300131 opened with ${open} at 2017-05-01)
`

span.get(time)

Gets a single datum

- time Date|Array

Returns Candlestick|null

span.get(...times)

Returns Array

span.between([from, to])

- from Date the closed left of the region
- to Date the closed right of the region

Returns Array data between a period.

span.latest(limit)

- limit Number limit the number of results.

Returns Array

span.sync([from, to])

Sync data from from to to`, and update db, and update last-updated record.

License

MIT