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5.5.0 · 15 Oct 2026MIT322.7M / weekRepositoryHomepagenpmAtom feed

Your version

5.2.3

1 Aug 2026Where it was published

5.5.0 is the newest release of 5.x.

In short

4 fixed

Security

1 advisory affects 5.2.3; 5.4.1 fixes them

Release note

Fixed

  • Prevent prototype fallback when resolving tags and mapping entries, #782.

  • Resolve !!timestamp years 0000-0099 correctly, #775.

  • Preserve implicit null mapping values before document markers and reject
    unpaired mapping event streams, #784.

  • Preserve folded scalar values with tab-indented lines when round-tripping a
    parsed AST through present(); dump() and loading are unaffected, #780.