14 lines
		
	
	
		
			349 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			14 lines
		
	
	
		
			349 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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module.exports = function (t, a) {
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	var x = {}, y = Object.create(null);
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	a(t(x), null, "Normal: Empty");
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	a(t(y), null, "Null extension: Empty");
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	x.foo = "raz";
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	x.bar = 343;
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	a(["foo", "bar"].indexOf(t(x)) !== -1, true, "Normal");
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	y.elo = "foo";
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	y.mar = "wew";
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	a(["elo", "mar"].indexOf(t(y)) !== -1, true, "Null extension");
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};
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