Drawback is that it doesn't work in older node versions, less readable, also allows raw Uint8Arrays - but if you control the env it can be 
TIL you can use "http://Object.prototype.toString.call (obj) === '[object Uint8Array]'" as a performant alternative to Buffer.isBuffer() - can, not should
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older then which one?
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How much faster?
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4-40% in certain stream benchmarks for current V8, 5% difference for future V8 - instanceof is expensive
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I use this module a lot to save bytes for frontend libs, since it doesn't include all of Buffer
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meant to link to this
https://github.com/feross/is-buffer …
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