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FastCSV v4.3.0 Release Notes

Release Date: 2026-05-19 // 29 days ago

  • 4.3.0 (2026-05-09)

    🔋 Features

    • ➕ add allowUnclosedQuote flag to reader builders (#173) (171101a)
    • 🔒 lock skipLines once CSV parsing has started (fb018d2)

    🐛 Bug Fixes

    • 📜 clear stale CR flag on closing quote in StrictCsvParser (a6d3de5)
    • 📜 peekLine in RelaxedCsvParser truncated long lines (ce86205)
    • peekLine left buffer in inconsistent state after compaction (0819c4f)
    • 📜 reset() in StrictCsvParser left parser-state fields stale (9c0d607)

Previous changes from v4.2.0

  • 4.2.0 (2026-04-04)

    🔋 Features

    • ➕ add FieldMismatchStrategy to replace allowExtraFields/allowMissingFields (b1049ac), closes #176