fix shimmer slow shim by removing support for unwrap

[rochdev]

What does this PR do?

Fix shimmer slow shim by removing support for unwrap.

Motivation

Last summer we changed all integrations to use shimmer instead of simple assignments in #4585 and #4634. This made everything slower by adding an additional wrapper to every instrumented function, resulting in a regression. The reason for the additional wrapper that is added by shimmer is to be able to unwrap later by replacing the inner wrapper with the original function. In reality, this was only used in 1 place, so I moved that logic there and removed it from shimmer, making wrapped functions faster.

[github-actions]

Overall package size

Self size: 9.27 MB
Deduped: 101.67 MB
No deduping: 102.19 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | @datadog/libdatadog | 0.5.0 | 29.83 MB | 29.83 MB | | @datadog/native-appsec | 8.5.1 | 19.26 MB | 19.27 MB | | @datadog/native-iast-taint-tracking | 3.3.0 | 13.77 MB | 13.78 MB | | @datadog/pprof | 5.7.0 | 9.89 MB | 10.26 MB | | @opentelemetry/core | 1.30.1 | 908.66 kB | 7.16 MB | | protobufjs | 7.4.0 | 2.77 MB | 5.42 MB | | @datadog/wasm-js-rewriter | 3.1.0 | 2.37 MB | 2.52 MB | | @datadog/native-metrics | 3.1.0 | 1.06 MB | 1.46 MB | | @opentelemetry/api | 1.8.0 | 1.21 MB | 1.21 MB | | import-in-the-middle | 1.13.1 | 117.64 kB | 839.26 kB | | source-map | 0.7.4 | 226 kB | 226 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | lru-cache | 7.18.3 | 133.92 kB | 133.92 kB | | pprof-format | 2.1.0 | 111.69 kB | 111.69 kB | | @datadog/sketches-js | 2.1.1 | 109.9 kB | 109.9 kB | | lodash.sortby | 4.7.0 | 75.76 kB | 75.76 kB | | ignore | 5.3.2 | 53.63 kB | 53.63 kB | | istanbul-lib-coverage | 3.2.0 | 29.34 kB | 29.34 kB | | rfdc | 1.4.1 | 27.15 kB | 27.15 kB | | @isaacs/ttlcache | 1.4.1 | 25.2 kB | 25.2 kB | | tlhunter-sorted-set | 0.1.0 | 24.94 kB | 24.94 kB | | dc-polyfill | 0.1.6 | 24.56 kB | 24.56 kB | | shell-quote | 1.8.2 | 23.54 kB | 23.54 kB | | limiter | 1.1.5 | 23.17 kB | 23.17 kB | | retry | 0.13.1 | 18.85 kB | 18.85 kB | | semifies | 1.0.0 | 15.84 kB | 15.84 kB | | jest-docblock | 29.7.0 | 8.99 kB | 12.76 kB | | crypto-randomuuid | 1.0.0 | 11.18 kB | 11.18 kB | | ttl-set | 1.0.0 | 4.61 kB | 9.69 kB | | path-to-regexp | 0.1.12 | 6.6 kB | 6.6 kB | | koalas | 1.0.2 | 6.47 kB | 6.47 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]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.27%. Comparing base (5ab3df2) to head (da04693).
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5557      +/-   ##
==========================================
- Coverage   79.35%   79.27%   -0.08%     
==========================================
  Files         513      512       -1     
  Lines       23290    23207      -83     
==========================================
- Hits        18481    18397      -84     
- Misses       4809     4810       +1     

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[pr-commenter]

Benchmarks

Benchmark execution time: 2025-04-10 04:09:28

Comparing candidate commit da04693 in PR branch fix-shimmer-slow-shim with baseline commit 5ab3df2 in branch master.

Found 2 performance improvements and 0 performance regressions! Performance is the same for 942 metrics, 19 unstable metrics.

scenario:startup-with-tracer-22

• 🟩 cpu_user_time [-19.776ms; -12.505ms] or [-10.674%; -6.750%]
• 🟩 execution_time [-19.485ms; -17.782ms] or [-7.850%; -7.164%]

[datadog-datadog-prod-us1]

Datadog Report

Branch report: fix-shimmer-slow-shim
Commit report: 45da19e
Test service: dd-trace-js-integration-tests

✅ 0 Failed, 931 Passed, 0 Skipped, 15m 40.91s Total Time