trading-signals/dist/trend/SMA15/SMA15.js

Technical indicators to run technical analysis with JavaScript / TypeScript.

import { MovingAverage } from '../MA/MovingAverage.js';
import { pushUpdate } from '../../util/pushUpdate.js';
export class SMA15 extends MovingAverage {
    prices = [];
    static #WEIGHTS = [-3, -6, -5, 3, 21, 46, 67, 74, 67, 46, 21, 3, -5, -6, -3];
    static #WEIGHT_SUM = 320;
    getRequiredInputs() {
        return SMA15.#WEIGHTS.length;
    }
    update(price, replace) {
        pushUpdate(this.prices, replace, price, this.getRequiredInputs());
        if (this.prices.length === this.getRequiredInputs()) {
            let weightedPricesSum = 0;
            for (let i = 0; i < this.getRequiredInputs(); i++) {
                const weightedPrice = this.prices[i] * SMA15.#WEIGHTS[i];
                weightedPricesSum += weightedPrice;
            }
            const weightedAverage = weightedPricesSum / SMA15.#WEIGHT_SUM;
            return this.setResult(weightedAverage, replace);
        }
        return null;
    }
}
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