@cprecioso/country-flag-emoji/dist/index.js

Lightweight emoji flag to and from country code

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

/*
  These magic numbers are charCode math, where we take advantage of the offset
  between any two uppercase leters (e.g. A - C = 2) being the same as the one
  between the emoji flag variant of those letters (e.g. (emoji A) - (emoji C) = 2).
*/
const FLAG_LETTER_EMOJI_FIRST_CODEPOINT = 55356; // "🇦".charCodeAt(0)
const UPPERCASE_AND_FLAG_LETTER_EMOJI_SECOND_CODEPOINT_OFFSET = 56741; // "🇦".charCodeAt(1) - "A".charCodeAt(0)
const getEmojiFlag = (countryCode) => {
    countryCode = countryCode.toUpperCase();
    /* Emoji flags are made from combination of two emoji sequences of two codepoints each. */
    return String.fromCharCode(FLAG_LETTER_EMOJI_FIRST_CODEPOINT, UPPERCASE_AND_FLAG_LETTER_EMOJI_SECOND_CODEPOINT_OFFSET +
        countryCode.charCodeAt(0), FLAG_LETTER_EMOJI_FIRST_CODEPOINT, UPPERCASE_AND_FLAG_LETTER_EMOJI_SECOND_CODEPOINT_OFFSET +
        countryCode.charCodeAt(1));
};
const getCountryCode = (flagEmoji) => {
    return String.fromCharCode(flagEmoji.charCodeAt(1) -
        UPPERCASE_AND_FLAG_LETTER_EMOJI_SECOND_CODEPOINT_OFFSET, flagEmoji.charCodeAt(3) -
        UPPERCASE_AND_FLAG_LETTER_EMOJI_SECOND_CODEPOINT_OFFSET);
};

exports.getCountryCode = getCountryCode;
exports.getEmojiFlag = getEmojiFlag;