function isBuffer(f){return!!f.constructor&&"function"==typeof f.constructor.isBuffer&&f.constructor.isBuffer(f)}function isSlowBuffer(f){return"function"==typeof f.readFloatLE&&"function"==typeof f.slice&&isBuffer(f.slice(0,0))}module.exports=function(f){return null!=f&&(isBuffer(f)||isSlowBuffer(f)||!!f._isBuffer)};