6 lines
		
	
	
		
			203 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
		
		
			
		
	
	
			6 lines
		
	
	
		
			203 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
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								module.exports = function isBuffer(arg) {
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								  return arg && typeof arg === 'object'
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								    && typeof arg.copy === 'function'
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								    && typeof arg.fill === 'function'
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								    && typeof arg.readUInt8 === 'function';
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								}
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