e164num/dist/isValidPartialE164PhoneNumber.js

**Light validation and manipulation of E.164 phone numbers.**

/**
 * Returns true if the given phone number is a valid partial E.164 phone number.
 * Empty string is considered valid as a starting point for input.
 * Returns false otherwise.
 *
 * @param partialE164PhoneNumber The partial E.164 phone number to validate.
 */
export const isValidPartialE164PhoneNumber = (partialE164PhoneNumber) => {
    const PartialE164RegEx = /^((\+1\d{0,10})|(\+?)|(\+[2-9]{1}\d{0,14}))$/;
    return PartialE164RegEx.test(partialE164PhoneNumber);
};