(chore) throttle deprecation messages

[mihkeleidast]

Resolves #3069.

Changes

I've added a simple object map to keep track of already logged deprecations so they would not be logged multiple times.

I've manually tested that the following code now only logs one deprecation message:

function highlight(code) {
  return hljs.highlight("java", code, false);
}

highlight(code);
highlight(code);
highlight(code);

Checklist

• Added markup tests, or they don't apply here because... does not change markup. could not find any existing logger tests so did not add any either.
• Updated the changelog at CHANGES.md

[mihkeleidast]

Looks like depd has limited or no browser support - what would be recommended to use here instead? util-deprecate looks popular but that does not have per-callsite logging.

[joshgoebel]

Exactly. I'll test later but this looks pretty good.

[joshgoebel]

@mihkeleidast Thanks so much!