Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1.1 KB
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1 | var $ = require('../internals/export');
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2 | var toAbsoluteIndex = require('../internals/to-absolute-index');
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3 |
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4 | var fromCharCode = String.fromCharCode;
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5 | // eslint-disable-next-line es/no-string-fromcodepoint -- required for testing
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6 | var $fromCodePoint = String.fromCodePoint;
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7 |
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8 | // length should be 1, old FF problem
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9 | var INCORRECT_LENGTH = !!$fromCodePoint && $fromCodePoint.length != 1;
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10 |
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11 | // `String.fromCodePoint` method
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12 | // https://tc39.es/ecma262/#sec-string.fromcodepoint
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13 | $({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, {
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14 | // eslint-disable-next-line no-unused-vars -- required for `.length`
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15 | fromCodePoint: function fromCodePoint(x) {
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16 | var elements = [];
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17 | var length = arguments.length;
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18 | var i = 0;
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19 | var code;
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20 | while (length > i) {
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21 | code = +arguments[i++];
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22 | if (toAbsoluteIndex(code, 0x10FFFF) !== code) throw RangeError(code + ' is not a valid code point');
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23 | elements.push(code < 0x10000
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24 | ? fromCharCode(code)
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25 | : fromCharCode(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00)
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26 | );
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27 | } return elements.join('');
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28 | }
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29 | });
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