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							43 lines
						
					
					
						
							899 B
						
					
					
				
			
		
		
	
	
							43 lines
						
					
					
						
							899 B
						
					
					
				module.exports = function arch () { | 
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  /** | 
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   * User agent strings that indicate a 64-bit OS. | 
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   * See: http://stackoverflow.com/a/13709431/292185 | 
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   */ | 
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  var userAgent = navigator.userAgent | 
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  if ([ | 
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    'x86_64', | 
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    'x86-64', | 
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    'Win64', | 
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    'x64;', | 
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    'amd64', | 
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    'AMD64', | 
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    'WOW64', | 
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    'x64_64' | 
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  ].some(function (str) { | 
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    return userAgent.indexOf(str) > -1 | 
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  })) { | 
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    return 'x64' | 
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  } | 
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 | 
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  /** | 
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   * Platform strings that indicate a 64-bit OS. | 
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   * See: http://stackoverflow.com/a/19883965/292185 | 
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   */ | 
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  var platform = navigator.platform | 
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  if (platform === 'MacIntel' || platform === 'Linux x86_64') { | 
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    return 'x64' | 
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  } | 
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 | 
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  /** | 
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   * CPU class strings that indicate a 64-bit OS. | 
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   * See: http://stackoverflow.com/a/6267019/292185 | 
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   */ | 
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  if (navigator.cpuClass === 'x64') { | 
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    return 'x64' | 
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  } | 
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 | 
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  /** | 
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   * If none of the above, assume the architecture is 32-bit. | 
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   */ | 
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  return 'x86' | 
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}
 | 
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 |