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 90.09%. Comparing base (04cb572) to head (c071304).
Report is 93 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #58125 +/- ##
==========================================
+ Coverage 90.07% 90.09% +0.02% 
==========================================
Files 640 640 Lines 188262 188262 Branches 36912 36911 -1 ==========================================
+ Hits 169580 169623 +43 + Misses 11399 11363 -36 + Partials 7283 7276 -7 

see 37 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/

[nodejs-github-bot]

Commit Queue failed

- Loading data for nodejs/node/pull/58125
✔ Done loading data for nodejs/node/pull/58125
----------------------------------- PR info ------------------------------------
Title Add SourceMap Benchmark (#58125)
Author Miguel Marcondes Filho <miguelmarcondesfilho@gmail.com> (@miguelmarcondesf)
Branch miguelmarcondesf:performance-improvements-sourcemap -> nodejs:main
Labels author ready, needs-ci, commit-queue-squash
Commits 3
- benchmark: add source map and source map cache
- benchmark: use fixtures for sourcemap cache
- benchmark: use fixtures and avoid dead code for sourcemap
Committers 1
- Miguel Marcondes <miguelmarcondesfilho@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/58125
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Edy Silva <edigleyssonsilva@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/58125
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Edy Silva <edigleyssonsilva@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
--------------------------------------------------------------------------------
ℹ This PR was created on Fri, 02 May 2025 17:48:50 GMT
✔ Approvals: 4
✔ - Chengzhong Wu (@legendecas) (TSC): https://github.com/nodejs/node/pull/58125#pullrequestreview-2946108239
✔ - Edy Silva (@geeksilva97): https://github.com/nodejs/node/pull/58125#pullrequestreview-2950130654
✔ - James M Snell (@jasnell) (TSC): https://github.com/nodejs/node/pull/58125#pullrequestreview-2952013937
✔ - Rafael Gonzaga (@RafaelGSS) (TSC): https://github.com/nodejs/node/pull/58125#pullrequestreview-2975274650
✔ Last GitHub CI successful
ℹ Last Full PR CI on 2025-06-23T13:44:33Z: https://ci.nodejs.org/job/node-test-pull-request/67620/
⚠ Commits were pushed after the last Full PR CI run:
⚠ - benchmark: add source map and source map cache
⚠ - benchmark: use fixtures for sourcemap cache
⚠ - benchmark: use fixtures and avoid dead code for sourcemap
- Querying data for job/node-test-pull-request/67620/
✔ Last Jenkins CI successful
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✔ Aborted `git node land` session in /home/runner/work/node/node/.ncu

https://github.com/nodejs/node/actions/runs/15999945215

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67863/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67870/

[nodejs-github-bot]

Landed in 9c025a9