How to use 'regex currency' in JavaScript

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export function currencyToRegex(
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  thousandSeparators = [' ', '.', ',', "'", '`'],
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  decimalNumbers = 2,
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  decimalSeparators = ['.', ','],
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  thousandGroupNumbers = 3
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) {
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  const thousandSeparatorsRegex = arrayOfStringsToRegex(
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    thousandSeparators
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  ).join('|');
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  const decimalSeparatorsRegex = arrayOfStringsToRegex(decimalSeparators).join(
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    '|'
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  );
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  const integerRegex = `(\\d{0,${thousandGroupNumbers -
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    1}}(?:(?:${thousandSeparatorsRegex})?\\d{${thousandGroupNumbers}})*)`;
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  const decimalRegex =
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    decimalNumbers > 0
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      ? `(?:(?:${decimalSeparatorsRegex})(\\d{0,${decimalNumbers}}))?`
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      : '';
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  return `^${integerRegex}${decimalRegex}$`;
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}

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function getRegex (isDecimal: boolean): RegExp {
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  return new RegExp(
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    isDecimal
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      ? `^(0|[1-9]\\d*)(\\${KEYS.DECIMAL}\\d*)?$`
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      : '^(0|[1-9]\\d*)$'
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  );
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}