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npm / apache-arrow

apache-arrow

What changed in apache-arrow 21, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-17.

4 new APIs and options6 fixes and other

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@unstale/cli 0.1.1 on npm

apache-arrow 2110 changes

New APIs and options 4

Fixes and other changes 6

  • Respects typed-array byteOffset when converting big numbers to strings.

    21.2.0release notes

  • Writes a zero-filled values buffer for fully-null Bool columns in IPC.

    21.2.0release notes

  • Fixes nanosecond precision loss in IntervalMonthDayNano values, including when reading JSON-encoded int64s.

    21.2.0release notes

  • Resolves the TS2352 type error in MapBuilder for TypeScript 5.6 and later.

    21.2.0release notes

  • Preserves numRows for zero-column RecordBatch values in IPC.

    21.2.0release notes

  • Implements Symbol.hasInstance to support cross-library instanceof checks.

    21.2.0release notes