rxjs-trading-signals/dist/AO/AO.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.AO = void 0;
const big_js_1 = __importDefault(require("big.js"));
const rxjs_1 = require("rxjs");
const SMA_1 = require("../SMA/SMA");
const AO = (shortInterval, longInterval, SmoothingIndicator = SMA_1.SMA) => {
    return (observable) => new rxjs_1.Observable((subscriber) => {
        const source$ = observable.pipe((0, rxjs_1.concatMap)(({ high, low }) => {
            const candleSum = new big_js_1.default(low).add(high);
            const medianPrice = candleSum.div(2);
            return (0, rxjs_1.of)(medianPrice);
        }), (0, rxjs_1.share)());
        const subscription = (0, rxjs_1.zip)(source$.pipe(SmoothingIndicator(shortInterval), (0, rxjs_1.skip)(longInterval - shortInterval)), source$.pipe(SmoothingIndicator(longInterval)))
            .pipe((0, rxjs_1.map)(([short, long]) => new big_js_1.default(short).minus(long)))
            .subscribe({
            next(x) {
                subscriber.next(x);
            },
            error(err) {
                subscriber.error(err);
            },
            complete() {
                subscriber.complete();
            },
        });
        return () => {
            subscription.unsubscribe();
        };
    });
};
exports.AO = AO;
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