Valid regex currency

I'm working on a regex but don't know exactly what to do further. These are my regex:

In price.ts

if (isTaiwan(locale)) {
      return price.replace(/\s(\d)/g, '$1,$2').replace('', '.');
    }

these regex check either for currency String or numbers. Example to each one

1. NT$ 74,000.00

I have a test with Jest

in price.test.ts

it('should format tw prices correctly', () => {
  expect(
    formatPrice('zh_tw', {
      currency: Currencies.TW,
      value: 74000.0,
    }),
  ).toEqual('NT\u0024\u002074,000.00');
});

But I don't get the result I want

 Expected: "NT$ 74,000.00"
 Received: "NT$74.000.00"

I would like a space between the $ and the digits