| var $ = require('../internals/export'); |
| var toAbsoluteIndex = require('../internals/to-absolute-index'); |
| |
| var fromCharCode = String.fromCharCode; |
| var nativeFromCodePoint = String.fromCodePoint; |
| |
| // length should be 1, old FF problem |
| var INCORRECT_LENGTH = !!nativeFromCodePoint && nativeFromCodePoint.length != 1; |
| |
| // `String.fromCodePoint` method |
| // https://tc39.github.io/ecma262/#sec-string.fromcodepoint |
| $({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, { |
| fromCodePoint: function fromCodePoint(x) { // eslint-disable-line no-unused-vars |
| 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(''); |
| } |
| }); |