pricehistory/dist/esm/option.set.js

Transforms raw OHLCV series data into enriched candles with technical indicators, pattern recognition, and trend analysis.

import * as utilN from "@nameer/utils";
function setOptions(option, series) {
    const normalized = option;
    /*
     * FIELD MAPPING
     */
    normalized.datetime ?? (normalized.datetime = "datetime");
    normalized.open ?? (normalized.open = "open");
    normalized.high ?? (normalized.high = "high");
    normalized.low ?? (normalized.low = "low");
    normalized.close ?? (normalized.close = "close");
    normalized.volume ?? (normalized.volume = "volume");
    /*
     * BASE PRICE
     */
    if (normalized.basePrice === undefined) {
        for (const curr of series) {
            const open = curr[normalized.open];
            if (utilN.isNumber(open)) {
                normalized.basePrice = open;
                break;
            }
        }
    }
    /*
     * RSI
     */
    if (option.rsi === true) {
        normalized.rsi = 14; // J. Welles Wilder's optimal setting
    }
    else if (normalized.rsi !== undefined && !utilN.isNumber(normalized.rsi)) {
        normalized.rsi = false;
    }
    normalized.rsi ?? (normalized.rsi = false);
    /*
     * EMA
     */
    if (option.ema === true) {
        normalized.ema = [5, 8, 13]; // The Fibonacci Trio
    }
    else if (utilN.isArray(normalized.ema)) {
        normalized.ema = normalized.ema.filter(utilN.isNumber);
    }
    else {
        normalized.ema = [];
    }
    /*
     * MACD
     */
    if (option.macd === true || normalized.macdPivot === true) {
        normalized.macd = [12, 26, 9]; // Fast, Slow, Signal
    }
    if (utilN.isArray(normalized.macd)) {
        const macd = normalized.macd.filter(utilN.isNumber);
        if (macd.length === 3) {
            normalized.macd = [macd[0], macd[1], macd[2]];
            normalized.ema = [...new Set([...normalized.ema, macd[0], macd[1]])];
        }
        else {
            normalized.macd = false;
        }
    }
    else {
        normalized.macd = false;
    }
    if (normalized.macdPivot === true) {
        normalized.macdPivot = normalized.macd !== false;
    }
    /*
     * SMA
     */
    if (option.sma === true) {
        normalized.sma = [10, 50]; // Personal preference
    }
    else if (utilN.isArray(normalized.sma)) {
        normalized.sma = normalized.sma.filter(utilN.isNumber);
    }
    else {
        normalized.sma = [];
    }
    /*
     * SIGNAL
     */
    if (utilN.isArray(option.signal)) {
        if (option.signal.every(utilN.isString)) {
            normalized.signal = [option.signal];
        }
        normalized.signal = normalized.signal.filter((signal) => {
            return utilN.isArray(signal) && signal.every(utilN.isString);
        });
    }
    else {
        normalized.signal = [];
    }
    /*
     * PHASE
     */
    if (option.phase === true) {
        normalized.phase = 10; // Personal preference
    }
    if (utilN.isNumber(normalized.phase)) {
        normalized.color = true;
        if (!normalized.sma.includes(normalized.phase)) {
            normalized.sma.push(normalized.phase);
        }
        ensureSignal(normalized, `sma${normalized.phase}PriceClose`);
    }
    else {
        normalized.phase = false;
    }
    /*
     * PRESSURE
     */
    if (option.pressure === true) {
        normalized.pressure = 10; // Personal preference
    }
    if (utilN.isNumber(normalized.pressure)) {
        normalized.color = true;
        if (!normalized.sma.includes(normalized.pressure)) {
            normalized.sma.push(normalized.pressure);
        }
        ensureSignal(normalized, `sma${normalized.pressure}PriceClose`);
    }
    else {
        normalized.pressure = false;
    }
    /*
     * ANCHOR
     */
    if (option.anchor === true) {
        normalized.anchor = [0, 50, 100]; // Personal preference
    }
    if (utilN.isArray(normalized.anchor)) {
        normalized.anchor = normalized.anchor.filter(utilN.isNumber);
    }
    else {
        normalized.anchor = [];
    }
    /*
     * NORMALIZE
     */
    if (utilN.isArray(normalized.normalize)) {
        normalized.normalize = normalized.normalize.filter(utilN.isString);
    }
    else {
        normalized.normalize = [];
    }
    /*
     * SORTING
     */
    normalized.ema.sort((a, b) => a - b);
    normalized.sma.sort((a, b) => a - b);
    normalized.anchor.sort((a, b) => a - b);
    return normalized;
}
function ensureSignal(normalized, smaKey) {
    const isSignal = normalized.signal.some(([anchor, ...keys]) => {
        return (anchor === smaKey &&
            keys.includes("priceHigh") &&
            keys.includes("priceLow"));
    });
    if (isSignal !== true) {
        normalized.signal.push([smaKey, "priceHigh", "priceLow"]);
    }
}
export default setOptions;
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