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fix: serialize NaT in NumPy datetime64 arrays as JSON null - #5831

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senanurcetin wants to merge 8 commits into

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senanurcetin:fix/issue-5829-nat-datetime-arrays

Draft

fix: serialize NaT in NumPy datetime64 arrays as JSON null#5831
senanurcetin wants to merge 8 commits into
plotly:mainfrom
senanurcetin:fix/issue-5829-nat-datetime-arrays

Commits on Oct 20, 2026
- fix(json): encode missing numpy datetime64 values as null
  senanurcetin
  committed
  7726576
- fix(orjson): normalize NaT in datetime64 ndarray serialization
  senanurcetin
  committed
  e5b4453
- docs: record NaT datetime64 JSON serialization fix
  senanurcetin
  committed
  b84549b
- test: cover NaT datetime64 serialization with both JSON engines
  senanurcetin
  committed
  3276c06
- fix(orjson): bypass fast NumPy serialization when NaT is present
  senanurcetin
  committed
  8d955a7
- style: format NaT serialization fix
  senanurcetin
  committed
  a84623a
- style: format NaT serialization fix
  senanurcetin
  committed
  9cbfec2
- style: separate NaT regression test definitions
  senanurcetin
  committed
  527ed0a