chore: refactor config class to a singleton

[BridgeAR]

This allows to pick up runtime configuration changes in the future as well as allowing to simplify the code in future PRs. One possible change is to remove configure and to move the remote configuration to just update the singleton instead.

We can add events to activate and deactivate features as soon as updates are incoming that are not handled by a simple property access.

That way most configurations will be changeable at runtime as soon as the remote configuration handles all entries.

[github-actions]

Overall package size

Self size: 13.19 MB
Deduped: 116.12 MB
No deduping: 131.13 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | @datadog/libdatadog | 0.7.0 | 35.02 MB | 35.02 MB | | @datadog/native-appsec | 10.3.0 | 20.73 MB | 20.74 MB | | @datadog/native-iast-taint-tracking | 4.0.0 | 11.72 MB | 11.73 MB | | @datadog/pprof | 5.12.0 | 11.19 MB | 11.57 MB | | @opentelemetry/resources | 1.30.1 | 557.67 kB | 7.71 MB | | @opentelemetry/core | 1.30.1 | 908.66 kB | 7.16 MB | | protobufjs | 7.5.4 | 2.95 MB | 5.82 MB | | @datadog/wasm-js-rewriter | 4.0.1 | 2.85 MB | 3.58 MB | | @datadog/native-metrics | 3.1.1 | 1.02 MB | 1.43 MB | | @opentelemetry/api-logs | 0.207.0 | 201.39 kB | 1.42 MB | | @opentelemetry/api | 1.9.0 | 1.22 MB | 1.22 MB | | jsonpath-plus | 10.3.0 | 617.18 kB | 1.08 MB | | import-in-the-middle | 1.15.0 | 127.66 kB | 856.24 kB | | lru-cache | 10.4.3 | 804.3 kB | 804.3 kB | | @datadog/openfeature-node-server | 0.1.0-preview.15 | 106.53 kB | 424.55 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | source-map | 0.7.6 | 185.63 kB | 185.63 kB | | pprof-format | 2.2.1 | 163.06 kB | 163.06 kB | | @datadog/sketches-js | 2.1.1 | 109.9 kB | 109.9 kB | | @isaacs/ttlcache | 2.0.1 | 78.45 kB | 78.45 kB | | lodash.sortby | 4.7.0 | 75.76 kB | 75.76 kB | | ignore | 7.0.5 | 63.38 kB | 63.38 kB | | istanbul-lib-coverage | 3.2.2 | 34.37 kB | 34.37 kB | | rfdc | 1.4.1 | 27.15 kB | 27.15 kB | | dc-polyfill | 0.1.10 | 26.73 kB | 26.73 kB | | tlhunter-sorted-set | 0.1.0 | 24.94 kB | 24.94 kB | | shell-quote | 1.8.3 | 23.74 kB | 23.74 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 | | mutexify | 1.4.0 | 5.71 kB | 8.74 kB | | path-to-regexp | 0.1.12 | 6.6 kB | 6.6 kB | | module-details-from-path | 1.0.4 | 3.96 kB | 3.96 kB | | escape-string-regexp | 5.0.0 | 3.66 kB | 3.66 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 83.81%. Comparing base (69661b4) to head (01c3c19).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6803      +/-   ##
==========================================
- Coverage   83.85%   83.81%   -0.05%     
==========================================
  Files         505      506       +1     
  Lines       21340    21350      +10     
==========================================
- Hits        17895    17894       -1     
- Misses       3445     3456      +11     

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[datadog-official]

⚠️ Tests

⚠️ Warnings

🧪 6 Tests failed

❄️ Known flaky: Plugin node:http/server canceled request should send traces to agent from canceled request (Datadog)

expected stub to not have been called

AssertionError: expected stub to not have been called
    at /home/runner/work/dd-trace-js/dd-trace-js/packages/datadog-plugin-http/test/server.spec.js:69:43
    at handler (packages/dd-trace/test/plugins/agent.js:350:22)
    at /home/runner/work/dd-trace-js/dd-trace-js/packages/dd-trace/test/plugins/agent.js:226:7
    at Set.forEach (<anonymous>)
    at handleTraceRequest (packages/dd-trace/test/plugins/agent.js:222:17)
    at /home/runner/work/dd-trace-js/dd-trace-js/packages/dd-trace/test/plugins/agent.js:441:7
    at Layer.handleRequest (node_modules/router/lib/layer.js:152:17)
...

esm "after all" hook in "esm" from esm (Datadog)

Cannot read properties of undefined (reading 'remove')

TypeError: Cannot read properties of undefined (reading 'remove')
    at Context.<anonymous> (integration-tests/helpers/index.js:608:20)
    at process.processImmediate (node:internal/timers:483:21)
    at process.callbackTrampoline (node:internal/async_hooks:130:17)

esm "before all" hook in "esm" from esm (Datadog)

Cannot find module './preload-path/node-preload.js'
Require stack:
- /home/runner/work/dd-trace-js/dd-trace-js/node_modules/node-preload/process-node-options.js
- /home/runner/work/dd-trace-js/dd-trace-js/node_modules/node-preload/hook-spawn.js
- /home/runner/work/dd-trace-js/dd-trace-js/node_modules/node-preload/preload-path/node-preload.js
- internal/preload

Error: Cannot find module './preload-path/node-preload.js'
Require stack:
- /home/runner/work/dd-trace-js/dd-trace-js/node_modules/node-preload/process-node-options.js
...

View all

ℹ️ Info

❄️ No new flaky tests detected

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 01c3c19 | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-11-07 01:08:50

Comparing candidate commit 01c3c19 in PR branch BridgeAR/2025-10-30-refactor-config-to-singleton-method with baseline commit 69661b4 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1601 metrics, 69 unstable metrics.