What does this PR do?

Drop support for Node 12. I also moved @types/node to dev dependencies since the library is fairly large, and users of TypeScript should already have it loaded for the version of Node they are using while JavaScript users don't need it in the first place.

Motivation

Node 12 went EOL on 2022-04-30 and we only support maintained versions of Node in the latest release line. Node 12 will continue to be supported for a year in v2.x of dd-trace.

Overall package size

Self size: 2.58 MB Deduped: 29.72 MB No deduping: 30.35 MB

Dependency sizes

name	version	self size	total size
@datadog/pprof	1.0.2	8.74 MB	14.46 MB
@datadog/native-metrics	1.4.2	6.61 MB	7.04 MB
@datadog/native-appsec	1.2.1	5.1 MB	5.43 MB
opentracing	0.14.7	194.81 kB	194.81 kB
@datadog/sketches-js	2.0.0	105.44 kB	105.44 kB
lodash.sortby	4.7.0	75.76 kB	75.76 kB
semver	5.7.1	61.58 kB	61.58 kB
ignore	5.2.0	48.87 kB	48.87 kB
import-in-the-middle	1.3.0	30.3 kB	34.77 kB
retry	0.10.1	27.44 kB	27.44 kB
lodash.uniq	4.5.0	25.01 kB	25.01 kB
limiter	1.1.5	23.17 kB	23.17 kB
lodash.kebabcase	4.1.1	17.75 kB	17.75 kB
lodash.pick	4.4.0	16.33 kB	16.33 kB
crypto-randomuuid	1.0.0	11.18 kB	11.18 kB
diagnostics_channel	1.1.0	7.07 kB	7.07 kB
path-to-regexp	0.1.7	6.78 kB	6.78 kB
koalas	1.0.2	6.47 kB	6.47 kB
methods	1.1.2	5.29 kB	5.29 kB
module-details-from-path	1.0.3	4.47 kB	4.47 kB

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

Codecov Report

Merging #2260 (42ad3e3) into master (42ad3e3) will not change coverage. The diff coverage is n/a.

:exclamation: Current head 42ad3e3 differs from pull request most recent head e1c378a. Consider uploading reports for the commit e1c378a to get more accurate results

@@           Coverage Diff           @@
##           master    #2260   +/-   ##
=======================================
  Coverage   92.96%   92.96%           
=======================================
  Files         220      220           
  Lines        8552     8552           
=======================================
  Hits         7950     7950           
  Misses        602      602           

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You also drop support for a bunch of older versions of libraries we support. Is that because those versions don't run on Node.js 14 and higher?

You also drop support for a bunch of older versions of libraries we support. Is that because those versions don't run on Node.js 14 and higher?

Yes, I had to find the minimum version that supports Node 14 for each of them.