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[backport] Count empty mappings in merge sequences toward maxTotalMergeKeys
to limit CPU usage, #797.
4.3.1 - 2026-07-31
Security
[backport] Remove quadratic complexity from !!omap duplicate key detection.
4.3.0 - 2026-06-27
Added
[backport] Added maxTotalMergeKeys (10000) loader option to limit the total number of
keys processed by YAML merge (<<) across one load() / loadAll() call.
Fixed
Restore umd builds back to es5.
Removed
[backport] maxMergeSeqLength replaced with maxTotalMergeKeys for limiting YAML merge
processing.
[4.2.0] - 2026-06-01
Added
Added docs/safety.md with notes about processing untrusted YAML.
Added maxDepth (100) loader option. Not a problem, but gives a better
exception instead of RangeError on stack overflow.
Added maxMergeSeqLength (20) loader option. Not a problem after merge fix,
but an additional restriction for safety.
Added sourcemaps to dist/ builds.
Changed
Stop resolving numbers with underscores as numeric scalars, #627.
Switched dev toolchains to Vite / neostandard.
Updated demo.
Reorganized tests.
dist/ files are no longer kept in the repository.
Fixed
Fix parsing of properties on the first implicit block mapping key, #62.
Fix trailing whitespace handling when folding flow scalar lines, #307.
Reject top-level block scalars without content indentation, #280.
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dependenciesPull requests that update a dependency filejavascriptPull requests that update javascript code
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Bumps js-yaml from 4.1.1 to 4.3.2.
Changelog
Sourced from js-yaml's changelog.
... (truncated)
Commits
79ca68d4.3.2 releasedd90b661Backport merge limits from v5.4.186e91b84.3.1 releasedc3cc4b0Backport quadratic complexity fix for !!omap33d05b54.3.0 released663bfabDrop demo publish, to not override new v5 one.1cb8c7bAdd v4-legacy tag for publish02f27afRestore umd builds back to es58be84edFix es5 compatibility59423c6ReplacemaxMergeSeqLengthoption withmaxTotalMergeKeys(more robust). Ba...Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase.Dependabot commands and options
You can trigger Dependabot actions by commenting on this PR:
@dependabot rebasewill rebase this PR@dependabot recreatewill recreate this PR, overwriting any edits that have been made to it@dependabot show <dependency name> ignore conditionswill show all of the ignore conditions of the specified dependency@dependabot ignore this major versionwill close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)@dependabot ignore this minor versionwill close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)@dependabot ignore this dependencywill close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)You can disable automated security fix PRs for this repo from the Security Alerts page.