Update node version check

[ronihcohen]

#5430

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[bugzpodder]

I think eslint 5 requires 8.10 or something?

[stramel]

Curious if we want to update the package.json engines.node field with this restraint and reference that in this file when doing the check?

[stale]

This pull request has been automatically marked as stale because it has not had any recent activity. It will be closed in 5 days if no further activity occurs.

[ianschmitz]

Curious if we want to update the package.json engines.node field with this restraint and reference that in this file when doing the check?

This sounds like a great way to do it.

[adica]

please change also Please update to Node 6 or higher for a better, fully supported experience to Please update to Node 9 or higher...

[ianschmitz]

Looks like this was already changed. Thanks!