10.0.0 (2026-07-29)

• feat!: throw error in case of stale remote for CI mode (#4369) (3e81682), closes #4369
• feat!: support node ^22.13.0 || ^24.0.0 || ^26.0.0, ship lerna as ESM-only (#4390) (a148ba2), closes #4390
• fix(core)!: replace deprecated conventional-changelog dependencies (#4332) (b1ff72f), closes #4332

Bug Fixes

• core: remove p-map-series, p-pipe, p-reduce, and p-waterfall (#4321) (fe066cb)
• core: remove upath dependency (#4317) (aa65470)
• core: support changelog presets that only expose the ESM import condition (#4385) (294e33a)
• core: support OIDC trusted publishing on CircleCI (#4383) (a0963b9)
• publish: show output from publish and postpublish lifecycle scripts (#4330) (9e87a34)

Features

• core: add bun as supported package manager (#4264) (4ca7d2c)

BREAKING CHANGES

• In CI, EBEHIND will now be thrown during versioning and publishing if the checkout is behind the latest on the remote. This previously only occurred outside of CI environments.

  If you wish to opt into the old behavior, you can do so by setting --ci-behind-behavior (error | skip, default error) or command.version.ciBehindBehavior in lerna.json.

• Lerna is now shipped as ESM-only and the lowest supported node version has changed to 22.13.0, because on this version CommonJS consumers can still require in its entry points without any additional flags or warnings.

• Lerna now uses the current conventional-changelog APIs instead of the deprecated conventional-changelog-core stack.

  Generated CHANGELOG.md output may differ, including normalized whitespace and URL-encoded tag names. Projects using custom changelog presets should verify their output; Lerna retains compatibility for legacy parser/writer option names and Handlebars string templates.

  CLI options and version-bump behavior remain unchanged.