rxjs-trading-signals/dist/DMA/DMA.js

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

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.DMA = void 0;
const big_js_1 = __importDefault(require("big.js"));
const rxjs_1 = require("rxjs");
const SMA_1 = require("../SMA/SMA");
const DMA = (short, long, Indicator = SMA_1.SMA) => {
    return (observable) => new rxjs_1.Observable((subscriber) => {
        if (short > long) {
            [short, long] = [long, short];
        }
        const source$ = observable.pipe((0, rxjs_1.share)());
        const subscription = (0, rxjs_1.zip)(source$.pipe(Indicator(short), (0, rxjs_1.skip)(long - short)), source$.pipe(Indicator(long)))
            .pipe((0, rxjs_1.concatMap)(([short, long]) => {
            return (0, rxjs_1.of)({
                long: new big_js_1.default(long),
                short: new big_js_1.default(short),
            });
        }))
            .subscribe({
            next(x) {
                subscriber.next(x);
            },
            error(err) {
                subscriber.error(err);
            },
            complete() {
                subscriber.complete();
            },
        });
        return () => {
            subscription.unsubscribe();
        };
    });
};
exports.DMA = DMA;
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