8 lines
		
	
	
		
			154 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			154 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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module.exports = function (value) {
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	value = Number(value);
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	if (isNaN(value) || value === 0) return value;
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	return value > 0 ? 1 : -1;
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};
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