Live indicators

Indicators can be updated in real time using a market watcher.

• Example

import {
    createIndicator,
    MidaTimeframe,
    MidaMarketWatcher,
} from "@reiryoku/mida";

const sma = createIndicator("SMA", { length: 14, });
const m30Periods = await myAccount.getSymbolPeriods("ETHUSD", MidaTimeframe.M30);
const marketWatcher = new MidaMarketWatcher({ tradingAccount: myAccount, });

// Calculate SMA on the M30 close prices
await sma.next(m30Periods.map((period) => period.close));

await marketWatcher.watch("ETHUSD", {
    watchPeriods: true,
    timeframes: [ MidaTimeframe.M30, ],
});

marketWatcher.on("period-close", async (event) => {
    const { period, } = event.descriptor;
    
    // Update the periods
    m30Periods.push(period);
    // Update the SMA indicator with the new close price
    await sma.next([ period.close, ]);
});