@beenotung/tslib/tel/hk.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.is_hk_mobile_phone_prefix = is_hk_mobile_phone_prefix;
exports.is_hk_mobile_phone = is_hk_mobile_phone;
exports.to_full_hk_mobile_phone = to_full_hk_mobile_phone;
exports.format_hk_mobile_phone = format_hk_mobile_phone;
const utils_1 = require("./utils");
/** ******************************
 * Hong Kong mobile phone number *
 *********************************/
/**
 * 4, 7, 8 heading are allowed since 2018
 * news: https://skypost.ulifestyle.com.hk/article/2006268/
 * */
function is_hk_mobile_phone_prefix(tel) {
    tel = tel.replace(/^\+852/, '').trim();
    switch (tel[0]) {
        case '4':
        case '5':
        case '6':
        case '7':
        case '8':
        case '9':
            return true;
        default:
            return false;
    }
}
/**
 * with/without +852 prefix
 * */
function is_hk_mobile_phone(tel) {
    return to_full_hk_mobile_phone(tel) !== '';
}
/**
 * very forgiving
 *
 * @return +852xxxxyyyy if valid
 *         empty string if not valid
 * */
function to_full_hk_mobile_phone(tel) {
    if (typeof tel === 'number') {
        tel = tel.toString();
    }
    tel = tel
        .split('')
        .filter(x => '0' <= x && x <= '9')
        .join('');
    if (tel.length === 8 && is_hk_mobile_phone_prefix(tel)) {
        return '+852' + tel;
    }
    if (tel.length === 8 + 3 &&
        tel.startsWith('852') &&
        is_hk_mobile_phone_prefix(tel.substring(3))) {
        return '+' + tel;
    }
    if (tel.length === 8 + 4 &&
        tel.startsWith('+852') &&
        is_hk_mobile_phone_prefix(tel.substring(4))) {
        return tel;
    }
    return '';
}
/**
 * @returns +852 xxxx yyyy if valid
 */
function format_hk_mobile_phone(tel) {
    tel = to_full_hk_mobile_phone(tel);
    if (!tel)
        return tel;
    return (0, utils_1.format_tel_with_pattern)(tel, '+852 xxxx yyyy');
}