trading-signals/dist/trend/BREAKOUT_BAR_LOW/BreakoutBarLow.js

Technical indicators to run technical analysis with JavaScript / TypeScript.

import { IndicatorSeries } from '../../base/Indicator.js';
import { pushUpdate } from '../../util/pushUpdate.js';
export class BreakoutBarLow extends IndicatorSeries {
    #lookback;
    #highs = [];
    #lastEmitted = false;
    constructor(config) {
        super();
        this.#lookback = config.lookback;
    }
    getRequiredInputs() {
        return this.#lookback + 1;
    }
    update(candle, replace) {
        if (replace && this.#lastEmitted) {
            this.rollbackLastResult();
        }
        this.#lastEmitted = false;
        pushUpdate(this.#highs, replace, candle.high, this.getRequiredInputs());
        if (this.#highs.length < this.getRequiredInputs()) {
            return null;
        }
        const currentHigh = this.#highs[this.#highs.length - 1];
        let maxPriorHigh = this.#highs[0];
        for (let i = 1; i < this.#highs.length - 1; i++) {
            if (this.#highs[i] > maxPriorHigh) {
                maxPriorHigh = this.#highs[i];
            }
        }
        if (currentHigh > maxPriorHigh) {
            this.#lastEmitted = true;
            return this.setResult(candle.low, false);
        }
        return null;
    }
}
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