9 lines
		
	
	
		
			262 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			9 lines
		
	
	
		
			262 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
'use strict';
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var at = require('./_string-at')(true);
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 // `AdvanceStringIndex` abstract operation
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// https://tc39.github.io/ecma262/#sec-advancestringindex
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module.exports = function (S, index, unicode) {
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  return index + (unicode ? at(S, index).length : 1);
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};
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