npm / syncpack

syncpack

What changed in syncpack 14 to 15, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-19.

1 breaking1 deprecations9 new APIs and options2 performance7 behavior and defaults1 tooling9 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

syncpack 1520 changes

Version 15.1.1 was deprecated because of a bug in the Node.js integration with the Rust binary.
15.1.1release notes

Version Groups can set severity to override each status code’s default behavior with fix, error, or warn.
15.2.0release notes
Choose whether package.json files discovered via your package manager extend configured sources or replace them; the default is replace.
15.2.0release notes
Add an interactive prompt when running syncpack update.
15.1.2release notes
Add an option to skip the registry response cache.
15.1.2release notes
Add updateGroups to set registry update policies for if and how various dependencies should be updated.
15.1.2release notes
pnpm and bun catalog entries are first-class dependencies that can be grouped, targeted, updated, or banned; the pnpmCatalog dependency type can update the default catalog.
15.0.0release notes

syncpack now writes pnpmOverrides to pnpm-workspace.yaml.
15.3.2release notes
The update summary now lists only selected updates.
15.3.0release notes
Other .json files are allowed when explicitly set as sources.
15.2.0release notes
Widens detection of pnpm and bun projects.
15.0.0release notes

Syncpack v14 is a Rust rewrite with a new API; developers should follow the migration guide when upgrading.
14.0.0release notes

JSON output now includes a statusType property.
14.1.0release notes
The fix command accepts --reporter json, allowing JSON output.
14.1.0release notes
The format command accepts --reporter json, allowing JSON output.
14.1.0release notes

The command runs faster; the notes report 0.155s in 14.2.1 compared with 0.196s in 14.2.0.
14.2.1release notes