rxjs-trading-signals/dist/utils/trade.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.tradeRx = void 0;
const big_js_1 = __importDefault(require("big.js"));
const rxjs_1 = require("rxjs");
const tradeRx = (upper, lower) => {
    return (observable) => new rxjs_1.Observable((subscriber) => {
        let prev = 0;
        const subscription = observable.pipe((0, rxjs_1.map)(x => new big_js_1.default(x))).subscribe({
            next(r) {
                if (r.gt(upper)) {
                    if (prev !== 0 && prev !== 1) {
                        subscriber.next(1);
                    }
                    prev = 1;
                }
                else if (r.gt(lower)) {
                    if (prev === 1) {
                        subscriber.next(2);
                    }
                    else if (prev === 3) {
                        subscriber.next(3);
                    }
                    prev = 2;
                }
                else {
                    if (prev !== 0 && prev !== 3) {
                        subscriber.next(4);
                    }
                    prev = 3;
                }
            },
            error(err) {
                subscriber.error(err);
            },
            complete() {
                subscriber.complete();
            },
        });
        return () => {
            subscription.unsubscribe();
            prev = null;
        };
    });
};
exports.tradeRx = tradeRx;
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