@sunrise1002/tats/lib/candlestick/DarkCloudCover.js

Techincal Indicators written in javascript

import CandlestickFinder from './CandlestickFinder';
export default class DarkCloudCover extends CandlestickFinder {
    constructor() {
        super();
        this.name = 'DarkCloudCover';
        this.requiredCount = 2;
    }
    logic(data) {
        let firstdaysOpen = data.open[0];
        let firstdaysClose = data.close[0];
        let firstdaysHigh = data.high[0];
        let firstdaysLow = data.low[0];
        let seconddaysOpen = data.open[1];
        let seconddaysClose = data.close[1];
        let seconddaysHigh = data.high[1];
        let seconddaysLow = data.low[1];
        let firstdayMidpoint = ((firstdaysClose + firstdaysOpen) / 2);
        let isFirstBullish = firstdaysClose > firstdaysOpen;
        let isSecondBearish = seconddaysClose < seconddaysOpen;
        let isDarkCloudPattern = ((seconddaysOpen > firstdaysHigh) &&
            (seconddaysClose < firstdayMidpoint) &&
            (seconddaysClose > firstdaysOpen));
        return (isFirstBullish && isSecondBearish && isDarkCloudPattern);
    }
}
export function darkcloudcover(data) {
    return new DarkCloudCover().hasPattern(data);
}