creditCard unformatCreditCardNumber.ts

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  import { number } from 'card-validator';
 
export default function unformatCreditCardNumber(value: string, separator: string = ' '): string {
    const { card } = number(value);
 
    if (!card) {
        return value;
    }
 
    return value.replace(new RegExp(separator, 'g'), '');
}