10 lines
		
	
	
		
			219 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			10 lines
		
	
	
		
			219 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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var fn = function (value) { return value > 3; };
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module.exports = function () {
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	var arr = [1, 2, 3, 4, 5, 6];
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	if (typeof arr.findIndex !== "function") return false;
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	return arr.findIndex(fn) === 3;
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};
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