| var $export = require('./_export'); |
| var toAbsoluteIndex = require('./_to-absolute-index'); |
| var fromCharCode = String.fromCharCode; |
| var $fromCodePoint = String.fromCodePoint; |
| |
| // length should be 1, old FF problem |
| $export($export.S + $export.F * (!!$fromCodePoint && $fromCodePoint.length != 1), 'String', { |
| // 21.1.2.2 String.fromCodePoint(...codePoints) |
| fromCodePoint: function fromCodePoint(x) { // eslint-disable-line no-unused-vars |
| var res = []; |
| var aLen = arguments.length; |
| var i = 0; |
| var code; |
| while (aLen > i) { |
| code = +arguments[i++]; |
| if (toAbsoluteIndex(code, 0x10ffff) !== code) throw RangeError(code + ' is not a valid code point'); |
| res.push(code < 0x10000 |
| ? fromCharCode(code) |
| : fromCharCode(((code -= 0x10000) >> 10) + 0xd800, code % 0x400 + 0xdc00) |
| ); |
| } return res.join(''); |
| } |
| }); |