baseui/phone-input/utils.js

A React Component library implementing the Base design language

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.iso2FlagEmoji = iso2FlagEmoji;
/*
Copyright (c) Uber Technologies, Inc.

This source code is licensed under the MIT license found in the
LICENSE file in the root directory of this source tree.
*/
// country code regex
const ISO_REGEX = /^[a-z]{2}$/i;
// offset between uppercase ascii and regional indicator symbols
const OFFSET = 127397;
// convert country code to corresponding emoji flag
function iso2FlagEmoji(iso) {
  if (!ISO_REGEX.test(iso)) {
    const type = typeof iso;
    if (process.env.NODE_ENV !== "production") {
      console.warn(`iso argument must be an ISO 3166-1 alpha-2 string, but got '${type === 'string' ? iso : type}' instead.`);
    }
    return;
  }
  const chars = Array.from(iso.toUpperCase()).map(char => char.charCodeAt(0) + OFFSET);
  return String.fromCodePoint(...chars);
}