var $ = require('../internals/export'); var toAbsoluteIndex = require('../internals/to-absolute-index'); var fromCharCode = String.fromCharCode; // eslint-disable-next-line es/no-string-fromcodepoint -- required for testing var $fromCodePoint = String.fromCodePoint; // length should be 1, old FF problem var INCORRECT_LENGTH = !!$fromCodePoint && $fromCodePoint.length != 1; // `String.fromCodePoint` method // https://tc39.es/ecma262/#sec-string.fromcodepoint $({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, { // eslint-disable-next-line no-unused-vars -- required for `.length` fromCodePoint: function fromCodePoint(x) { var elements = []; var length = arguments.length; var i = 0; var code; while (length > i) { code = +arguments[i++]; if (toAbsoluteIndex(code, 0x10FFFF) !== code) throw RangeError(code + ' is not a valid code point'); elements.push(code < 0x10000 ? fromCharCode(code) : fromCharCode(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00) ); } return elements.join(''); } });