maskdata/lib/maskService/PhoneMask.js

Node module to mask various kinds of data in the required formats

'use strict';
const MaskHelper = require('../helpers/MaskHelper');
const Constants = require('../helpers/Constants');

class PhoneMask {
  static maskPhone(phone, options) {
    if (!phone || typeof phone === 'object') return phone;
    phone += '';
    if (options) {
      options = MaskHelper.mapWithDefaultValues(options, Constants.defaultPhoneMaskOptions);
      MaskHelper.validatePhoneOptions(options);
    } else {
      options = Constants.defaultPhoneMaskOptions;
    }
    let maskLength = phone.length - options.unmaskedStartDigits - options.unmaskedEndDigits;
    if (options.unmaskedStartDigits + options.unmaskedEndDigits >= phone.length) {
      return phone;
    }
    return (
      phone.substring(0, options.unmaskedStartDigits) +
      `${options.maskWith}`.repeat(maskLength) +
      phone.substring(phone.length - options.unmaskedEndDigits)
    );
  }
}

module.exports = PhoneMask;