blob: c8776d8711046b95c6e1fecd3a518917c22b2355 [file] [log] [blame]
var $export = require('./_export')
, toIndex = require('./_to-index')
, fromCharCode = String.fromCharCode
, $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 = []
, aLen = arguments.length
, i = 0
, code;
while(aLen > i){
code = +arguments[i++];
if(toIndex(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('');
}
});