rxjs-trading-signals/dist/MACD.rx.js

The user - defined operator helps users quickly output index values. base trading-signals library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeIndicatorOperator = void 0;
const rxjs_1 = require("rxjs");
const trading_signals_1 = require("trading-signals");
const makeIndicatorOperator = (macdParam) => {
    return (observable) => new rxjs_1.Observable((subscriber) => {
        const [shortInterval, longInterval, signalInterval] = macdParam;
        let indicator = new trading_signals_1.MACD({
            indicator: trading_signals_1.EMA,
            shortInterval: shortInterval,
            longInterval: longInterval,
            signalInterval: signalInterval,
        });
        const subscription = observable.subscribe({
            next(item) {
                const { close } = item;
                indicator.update(close);
                if (indicator.isStable) {
                    const { histogram } = indicator.getResult();
                    subscriber.next([item, histogram]);
                }
            },
            error(err) {
                subscriber.error(err);
            },
            complete() {
                subscriber.complete();
            },
        });
        return () => {
            subscription.unsubscribe();
            indicator = null;
        };
    });
};
exports.makeIndicatorOperator = makeIndicatorOperator;
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