toLocaleString() not formatting number to European format

Question

I am trying to format a given number to European format. However, I am getting result in US/UK format only.

Here is my code:

static async formatCurrency(numberIn: number, currencyIndicator: string) {
        if(currencyIndicator=='EUR') {
            console.log(numberIn.toLocaleString('es-ES', { minimumFractionDigits: 2 , style: 'currency', currency: 'EUR'}));
            console.log(Number(numberIn).toLocaleString("de-DE", {minimumFractionDigits: 2}));
        }
}
await formatCurrency(12345678.00,"EUR");

Here is my output:

€12,345,678.00

12,345,678.00

The output I am expecting is:

€12.345.678,00

12.345.678,00

Answer 1

I tried installing full-icu and importing it to my class. With this code I am still not getting desired result:

            formattedNumber = await new Intl.NumberFormat('nl-NL', { minimumFractionDigits: 2 , style: 'currency', currency: 'EUR'}).format(numberIn);
           
 console.log("formattedNumber is: " + formattedNumber);

This is what I get as output: €12,345,678.00. Instead of €12.345.678,00

May be this will be better solution?

            formattedNumber = await formattedNumber.replace(/\./g, "_");
            formattedNumber = await formattedNumber.replace(/,/g, ".");
            formattedNumber = await formattedNumber.replace(/_/g, ",");
    ```