mirror of
https://github.com/Doodle3D/Doodle3D-API
synced 2024-12-23 22:13:48 +01:00
16 lines
529 B
JavaScript
16 lines
529 B
JavaScript
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/* */
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var $ = require("./$");
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module.exports = function(TO_STRING) {
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return function(that, pos) {
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var s = String($.assertDefined(that)),
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i = $.toInteger(pos),
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l = s.length,
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a,
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b;
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if (i < 0 || i >= l)
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return TO_STRING ? '' : undefined;
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a = s.charCodeAt(i);
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return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff ? TO_STRING ? s.charAt(i) : a : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;
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};
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};
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