(chore) Throttle logging of deprecation messages

[joshgoebel]

Would it maybe make sense to throttle logging the same deprecation messages? We're using highlight.js as a dependency of another dependency so can't directly update the deprecated code. The console is simply drowned in the exactly same deprecation message. Once would suffice, IMO, so we could alert the dependency to change it.

Originally posted by @mihkeleidast in #2277 (comment)

[allejo]

👍 for throttling deprecation messages. I would imagine it'd cause havoc on the hljs website if it weren't using highlightAll() for example (probably logging a deprecation message ~190 times).

[joshgoebel]

@mihkeleidast Would you want to contribute a small PR against our logger code to this effect?

[mihkeleidast]

I'll try to come up with something :)

[joshgoebel]

I'd just use a simple object literal keyed on the message and and version.

seenDeprecations[`${version}-${msg}`] = true