Candlestick

A JavaScript library for candlestick pattern detection. Easy to use and solves the need for node-gyp builds.

Installation

To use the most recent release in your project:

npm install --save candlestick

Available functions

• isBullishKicker(previous, current)
• isBearishKicker(previous, current)
• isShootingStar(previous, current)
• bullishKicker(dataArray)
• bearishKicker(dataArray)
• shootingStar(dataArray)

previous and current are OHLC (Open, High, Low, Close) objects:

{
  ...
  open: Number,   // security's opening price
  high: Number,   // security's highest price
  low: Number,    // security's lowest price
  close: Number   // security's closing price
}

dataArray is an array of OHLC objects, like previous or current.

Note: The OHLC object could have more properties and does not affect the computing result.

Examples

Boolean detection

Use two OHLCs to assess the pattern:

const cs = require('candlestick');

// Market data: previous and current ticks
const prev = {
  security: 'ORCL',
  date: '2016-09-15',
  open: 40.18,
  high: 41.03,
  low: 40.09,
  close: 40.86
};

const curr = {
  security: 'ORCL',
  date: '2016-09-16',
  open: 39.61,
  high: 39.35,
  low: 38.71,
  close: 38.92
};

console.log(cs.isBullishKicker(prev, curr)); // false
console.log(cs.isBearishKicker(prev, curr)); // true

Finding patterns in series

Find the points in a dataset where the pattern occurs:

const cs = require('candlestick');

// Market data: array of ticks
const data = [
  {
    security: 'GE',
    date: '2016-02-01',
    open: 29.01,
    high: 29.03,
    low: 28.56,
    close: 28.64
  },
  { ... },
  { ... },
  ...
  { ... }
];

console.log(cs.shootingStar(data));
// result: [{ security: 'GE', date: '2016-02-10', ... }, { security: 'GE', date: '2016-07-11', ... }]

Running tests

npm run test

Contributing

You are welcome to contribute to this library creating issues or pull requests.

Licence

This project is licensed under the MIT license. See the LICENSE file for more info.