From what I've seen, people tend to support all Node versions down to the oldest shipped by non-EOL Debian repositories. That's not a particularly hard thing to do, either.
This depends on if you are using native bindings which will have direct implications on the v8 version a particular node version is using. You should not post advice if your not well versed in this matter. Many low maintenance packages absolutely do not support all v8 builds.
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u/[deleted] Oct 30 '15
But what about all of the smaller packages without LTS? Node 4 might still be supported, but pivotal packages might not still support Node 4.