sanitize.js

/* eslint-disable one-var */

/**
 * Sanitize msisdn
 *
 * @param {string} msisdn - The MSISDN to be sanitized
 * @param {object} config - The config: countryCode, stripCountryCode, leadingZero
 * stripCountryCode means remove the countryCode from the msisdn
 * leadingZero true means replace the stripped countryCode with zero
 */
const sanitize = (msisdn, {countryCode, stripCountryCode, leadingZero} = {}) => {
    if (!msisdn) {
        return null;
    }
    
    if (!countryCode) {
        return msisdn;
    }
    const prefixExp = `^${countryCode}`,
        prefix = new RegExp(prefixExp);
    if (prefix.test(msisdn)) {
        if (stripCountryCode) {
            msisdn = msisdn.replace(prefix, '');
            
            if (leadingZero) {
              msisdn = `0${msisdn}`;
            }
        }
        return msisdn;
    }

    if (leadingZero && !/^0/.test(msisdn)) {
        msisdn = `0${msisdn}`;
    }
    return msisdn;
};

export { sanitize };