emoji-mart/dist/polyfills/stringFromCodePoint.js

Customizable Slack-like emoji picker for React

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;
var _String = String;

var _default = _String.fromCodePoint || function stringFromCodePoint() {
  var MAX_SIZE = 0x4000;
  var codeUnits = [];
  var highSurrogate;
  var lowSurrogate;
  var index = -1;
  var length = arguments.length;

  if (!length) {
    return '';
  }

  var result = '';

  while (++index < length) {
    var codePoint = Number(arguments[index]);

    if (!isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
    codePoint < 0 || // not a valid Unicode code point
    codePoint > 0x10ffff || // not a valid Unicode code point
    Math.floor(codePoint) != codePoint // not an integer
    ) {
        throw RangeError('Invalid code point: ' + codePoint);
      }

    if (codePoint <= 0xffff) {
      // BMP code point
      codeUnits.push(codePoint);
    } else {
      // Astral code point; split in surrogate halves
      // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
      codePoint -= 0x10000;
      highSurrogate = (codePoint >> 10) + 0xd800;
      lowSurrogate = codePoint % 0x400 + 0xdc00;
      codeUnits.push(highSurrogate, lowSurrogate);
    }

    if (index + 1 === length || codeUnits.length > MAX_SIZE) {
      result += String.fromCharCode.apply(null, codeUnits);
      codeUnits.length = 0;
    }
  }

  return result;
};

exports["default"] = _default;