trading-signals/dist/momentum/TDS/TDS.js

Technical indicators to run technical analysis with JavaScript / TypeScript.

import { TradingSignal, TrendIndicatorSeries } from '../../base/Indicator.js';
export class TDS extends TrendIndicatorSeries {
    closes = [];
    setupCount = 0;
    setupDirection = null;
    getRequiredInputs() {
        return 9;
    }
    update(close, replace) {
        if (replace) {
            this.closes.pop();
        }
        this.closes.push(close);
        if (this.closes.length < 5) {
            return null;
        }
        if (this.closes.length > 13) {
            this.closes.shift();
        }
        const index = this.closes.length - 1;
        const prev4 = this.closes[index - 4];
        if (close > prev4) {
            if (this.setupDirection === 'bearish') {
                this.setupCount = 1;
                this.setupDirection = 'bullish';
            }
            else {
                this.setupCount++;
                this.setupDirection = 'bullish';
            }
        }
        else if (close < prev4) {
            if (this.setupDirection === 'bullish') {
                this.setupCount = 1;
                this.setupDirection = 'bearish';
            }
            else {
                this.setupCount++;
                this.setupDirection = 'bearish';
            }
        }
        if (this.setupCount >= this.getRequiredInputs()) {
            const result = this.setupDirection === 'bullish' ? 1 : -1;
            this.setupCount = 0;
            this.setupDirection = null;
            return this.setResult(result, replace);
        }
        return null;
    }
    calculateSignalState(result) {
        const hasResult = result !== null && result !== undefined;
        const isOverbought = hasResult && result === 1;
        switch (true) {
            case !hasResult:
                return TradingSignal.UNKNOWN;
            case isOverbought:
                return TradingSignal.BULLISH;
            default:
                return TradingSignal.BEARISH;
        }
    }
}
//# sourceMappingURL=TDS.js.map