How to use the react-native-background-timer.runBackgroundTimer function in react-native-background-timer

handleAppStateChange = appState => {
		const newModeIsBackground = appState === 'background';
		// If it was in background and it's not anymore
		// we need to stop the Background timer
		if (this.backgroundMode && !newModeIsBackground) {
			BackgroundTimer.stop();
			this.pollForIncomingTransactions();
		}

		this.backgroundMode = newModeIsBackground;

		// If the app is now in background, we need to start
		// the background timer, which is less intense
		if (this.backgroundMode) {
			this.setState({ walletConnectReturnModalVisible: false });
			BackgroundTimer.runBackgroundTimer(async () => {
				await Engine.refreshTransactionHistory();
			}, AppConstants.TX_CHECK_BACKGROUND_FREQUENCY);
		}
	};

const socketSetup = store => {
  BackgroundTimer.runBackgroundTimer(() => {
    checkBalance(store);
  }, 30000);
};