jupyterlab 4.6.0b1

v4.6.0b1

on Python PyPI

4.6.0b1

(Full Changelog)

Enhancements made

• Update lumino to v2026.5.25 #18942 (@krassowski, @jtpio)
• Improve scroll overlay icon placement #18907 (@krassowski, @jtpio)
• Refactor shared document dirty state #18739 (@davidbrochart, @SylvainCorlay, @brichet, @krassowski)
• Automatically refresh Kernel Sources after cell execution #18081 (@arjxn-py, @Darshan808, @krassowski, @martinRenou)
• Use no-op manager if terminals are unavailable #17930 (@krassowski, @jasongrout, @jtpio)

Bugs fixed

• Forward port CodeMirror DOM compatibility patch #18947 (@krassowski, @Darshan808)
• Prevent dialog from hanging when getValue() throws #18938 (@AliMahmoudDev, @krassowski)
• Treat TypeDoc validation warnings as errors and and TSDoc linting #18859 (@MUFFANUJ, @krassowski)
• Fix opening notebook without a kernel if the kernel already exists by adding shouldReuse preference #18856 (@MUFFANUJ, @krassowski)

Maintenance and upkeep improvements

• Update minimum mermaid to 11.15.0 and marked 17.0.6 #18958 (@bollwyvl, @krassowski)
• Ignore conda.io in addition to docs.conda.io #18954 (@krassowski, @Darshan808, @MUFFANUJ)
• Fix completer test failures on CI #18946 (@krassowski, @brichet)
• Update to Playwright 1.60 #18939 (@jtpio, @krassowski)
• Fix path navigator font and breadcrumbs test #18927 (@krassowski, @jtpio)
• Fix flaky example UI snapshot test by disabling cursor blinking #18925 (@tsharma-dev, @krassowski)
• Fix flaky test: wait for kernel startup before pressing Shift+Enter #18924 (@krassowski, @jtpio)
• Wait for cell toolbar before snapshot in markdown tests #18922 (@krassowski, @jasongrout)
• Hash-pin all GitHub Actions #18912 (@krassowski, @jtpio)
• Remove vendored yarn.js #18823 (@bollwyvl, @Darshan808, @krassowski)
• Turn on verbatimModuleSyntax #18446 (@jasongrout, @krassowski)
• Turn on Typescript strictBindCallApply option #18418 (@jasongrout, @krassowski)

Documentation improvements

• Mention JupyterLab 4.6.0 beta in installation guide and via a banner #18941 (@krassowski, @jtpio)
• User-facing changelog for 4.6 release #18932 (@krassowski, @jtpio)
• Add jupyter-builder section in Extension Migration guide #18904 (@Darshan808, @krassowski)

Other merged PRs

• Bump @tootallnate/once from 2.0.0 to 2.0.1 #18930 (@krassowski)

Contributors to this release

The following people contributed discussions, new ideas, code and documentation contributions, and review.
See our definition of contributors.

(GitHub contributors page for this release)

@AliMahmoudDev (activity) | @arjxn-py (activity) | @bollwyvl (activity) | @brichet (activity) | @Darshan808 (activity) | @davidbrochart (activity) | @jasongrout (activity) | @jtpio (activity) | @krassowski (activity) | @martinRenou (activity) | @MUFFANUJ (activity) | @statxc (activity) | @SylvainCorlay (activity) | @tsharma-dev (activity)