# MarketWatcher()
Real time market updates such as ticks and candlesticks are listened through the MidaMarketWatcher
class.
- Interface
class MidaMarketWatcher {
constructor (parameters: MidaMarketWatcherParameters);
getSymbolDirectives (symbol: string): MidaMarketWatcherDirectives | undefined;
watch (symbol: string, directives: MidaMarketWatcherDirectives): Promise<void>;
unwatch (symbol: string): Promise<void>;
}
- Interface
type MidaMarketWatcherParameters = {
tradingAccount: MidaTradingAccount;
};