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lib: add node:metrics module - #58874

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Qard wants to merge 18 commits into

nodejs:mainfrom

Qard:metrics-provider

Commits on Mar 22, 2026
- lib: add node:metrics module
  Qard
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  c3a31a6
- lib: remove metric streams and unique sets
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  7d8d64a
- lib: remove meter metric
  Qard
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  b633581
- lib: replace periodic gauge with a pull gauge
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  7a06154
- lib: do not freeze MetricReport and Metric
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  989475e
- lib: remove metric report format output
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  bdb5fdf
- lib: eliminate mixMeta helper
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  6a36d3f
- lib: eliminate gauge applyDelta
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  06610aa
- lib: detach counter from gauge
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  c31e0cd
- lib: sub-class metric types from Metric
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  39f7f95
- lib: refactor Timer metric to a Counter method
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  52bb791
- perf_hooks: move metrics under perf_hooks
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  ccbfd16
- lib: use validators for metrics type checks
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  452489a
- lib: skip shouldReport on counter as report will do it anyway
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  b5e7ee0
- lib: improve metrics factory naming
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  00f2906
- lib: silence, linter...
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  0cf65ce
- lib: rewrite metrics interface
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  5fd8c22
- lib: fix lint errors after rebase
  
  Qard
  and
  claude
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  e025506