Customizing Standard Shopify Events - Multicurrency

function convertToDefaultCurrency(amount, fromCurrency, precision = 2) {
	/**
    	* Your array of currencies and their conversion rates relative to the default currency
    	* Example: If USD is your store currency or the one in which you want to track revenue and
    	* 1 USD = 0.8 GBP then the entry in the array will be "GBP": 0.8
    	**/
        var currencyConversion = {
            "USD": 1,// Always keep the default store currency in the array and keep the value as 1
            "EUR": 1.1, 
            "GBP": 0.82,
            "AUD": 1.43,
            "CAD": 1.4,
            "CZK": 26,
            "DKK": 7.3,
            "HKD": 7.76,
            "ISK": 170,
            "ILS": 3.8,
            "NZD": 1.43,
            "NOK": 14,
            "PLN": 4.6,
            "RON": 5,
            "SGD": 1.34,
            "KRW": 1200,
            "SEK": 10.55,
            "JPY": 120,
	    "INR": 83.52,
        };

        if (!currencyConversion[fromCurrency.toUpperCase()]) {
            console.error("Unsupported currency code: " + fromCurrency.toUpperCase());
		// Handling can be added for additional currencies 	
            return null;
        }
        return parseFloat((amount / currencyConversion[fromCurrency.toUpperCase()]).toFixed(precision));
    }
        
    vwo.addShopifyMiddleware((payload) => {
        var newPayload = payload;
        if(payload.name === "shopify.purchase"){
            newPayload.props.totalPrice = convertToDefaultCurrency(newPayload.props.totalPrice, newPayload.props.currencyCode, 2);
        }
        console.log(newPayload);
        return newPayload;
    });