8 lines
		
	
	
		
			202 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			202 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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module.exports = function () {
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	var numberIsNaN = Number.isNaN;
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	if (typeof numberIsNaN !== "function") return false;
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	return !numberIsNaN({}) && numberIsNaN(NaN) && !numberIsNaN(34);
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};
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