Add SourceMap Benchmark

[miguelmarcondesf]

Add SourceMap Benchmark

This PR introduces a new benchmark suite for the lib/internal/source_map module to help evaluate and explore the performance characteristics of the SourceMap.

I'm still learning how everything fits together, but this is a first step toward understanding where small improvements could improve performance.

cc @BridgeAR

[nodejs-github-bot]

Review requested:

• @nodejs/performance
• @nodejs/tsc

[miguelmarcondesf]

Local running with n: 1e5 for all cases:

[anonrig]

You need to add a test for these benchmarks. You can find similar ones in test folder.

[miguelmarcondesf]

You need to add a test for these benchmarks. You can find similar ones in test folder.

Thank you, just pushed that!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.12%. Comparing base (f2e99c5) to head (ac7a40e).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #58125      +/-   ##
==========================================
+ Coverage   90.02%   90.12%   +0.09%     
==========================================
  Files         639      640       +1     
  Lines      188173   188294     +121     
  Branches    36831    36927      +96     
==========================================
+ Hits       169404   169701     +297     
+ Misses      11509    11317     -192     
- Partials     7260     7276      +16     

see 52 files with indirect coverage changes

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[legendecas]

Thank you for the change! Overall LGTM % nits.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67569/