@showr/indicators/dist/rsi/averageLoss.js

Technical indicators for Trading made with Showr

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AverageLoss = void 0;
const core_1 = require("@showr/core");
const utils_1 = require("../utils");
class AverageLoss extends core_1.Indicator {
    constructor(name = 'AverageLoss', params) {
        super(name, function (dataset) {
            const { attribute, period } = params;
            const datasetLength = dataset.value.length;
            const lastAverageLoss = dataset.at(-2)?.getIndicator(this.name);
            if (lastAverageLoss && datasetLength > period) {
                const lastQuoteValue = dataset.valueAt(-1, attribute);
                const secondLastQuoteValue = dataset.valueAt(-2, attribute);
                const difference = lastQuoteValue - secondLastQuoteValue;
                const currentLoss = difference < 0 ? -difference : 0;
                return (lastAverageLoss * (period - 1) + currentLoss) / period;
            }
            else {
                const flattenDataset = dataset.flatten(attribute);
                return (0, utils_1.getAverageLoss)(flattenDataset, period) || NaN;
            }
        }, {
            params,
        });
    }
}
exports.AverageLoss = AverageLoss;