jupyterlab 4.7.0a2

v4.7.0a2

on Python PyPI

4.7.0a2

(Full Changelog)

Security fixes

• GHSA-3325-v43h-43rv - moderate
• GHSA-6966-vjj6-99xv - high
• GHSA-jwrc-gm9j-263p - moderate
• GHSA-3jqq-pw4j-pqcj - moderate

New features added

• Add Copy Link Address to the terminal context menu #19195 (@jtpio, @krassowski)

Enhancements made

• Add CI memory leak regression tests #19665 (@MUFFANUJ, @krassowski)
• Defer loading disabled federated extensions during startup #19627 (@MUFFANUJ, @jtpio, @krassowski)
• Add Copy Image context menu action #19516 (@MUFFANUJ, @krassowski)
• Add optional ILatexTypesetter.withParseOptions() #19223 (@krassowski, @MUFFANUJ)
• Add a search provider for Markdown Viewer #19222 (@Whning0513, @MUFFANUJ, @krassowski)
• Add Copy to the Markdown Viewer context menu #19221 (@Whning0513, @krassowski)
• Add Show Markdown Preview to the command palette #19217 (@jtpio, @krassowski)
• Add mypy enforcement #19198 (@MUFFANUJ, @krassowski)
• Display cell IDs in Notebook's Property Inspector in Common Tools section #19197 (@MUFFANUJ, @brichet, @dlqqq, @krassowski)
• Rename "Revert" button to "Reload from Disk" in file conflict dialog #19191 (@Sumitha007, @brichet, @jtpio, @krassowski)
• Allow opting out of single $ inline math delimiter at the renderer level #19177 (@krassowski, @dlqqq)
• Add Python typing enforcement #19164 (@MUFFANUJ, @bollwyvl, @krassowski)
• Enable nullable-number strict boolean linting #19133 (@MUFFANUJ, @jtpio, @krassowski)
• Add typing to command helpers #19125 (@GagandeepSingh20, @Copilot, @krassowski)
• Allow providing a custom extension manager model #19070 (@jtpio, @DTiming24, @krassowski)
• Speed up large and streamed text outputs with incremental autolinking, preserve selection #17197 (@krassowski, @Copilot, @MUFFANUJ)

Bugs fixed

• Security patches #19792 (@krassowski, @MUFFANUJ)
• Fix race when starting the search - keep correct filter #19765 (@krassowski, @brichet)
• Fix respecting commsOverSubshells option in connectTo() #19734 (@krassowski, @jtpio)
• Cache and throttle path resolution to avoid requests storm #19726 (@krassowski, @MUFFANUJ)
• Make inline history provider debounce (fix flaky tests), use ipykernel 7 for docs tests too #19716 (@krassowski, @MUFFANUJ)
• Sanitize bottom-panel pager MIME output #19677 (@MUFFANUJ, @krassowski)
• Fix resizing optimization for larger notebooks #19620 (@krassowski, @MUFFANUJ)
• Show context actions for all images, not only SVGs #19618 (@fly1d, @krassowski)
• Fix PyPI extension manager package.json inspection for tar.gz archives #19613 (@MUFFANUJ, @krassowski)
• Save sidebar section expansion state from the hidden flag #19415 (@jtpio, @krassowski)
• Fix memory leaks affecting common everyday use scenarios #19370 (@krassowski, @jtpio)
• Fix memory leak when Property Inspector is open and other issues exposed by new linter rules #19318 (@krassowski, @jtpio)
• Fix drive handling for consoles #19259 (@jtpio, @krassowski)
• Preserve kernelspec metadata when spec is unavailable #19247 (@tomatotomata, @MUFFANUJ, @krassowski)
• Fix Shift-click cell selection after editor text selection #19243 (@MUFFANUJ, @krassowski)
• Fix variable inspection, document autocomplete and variable inspect/render #19234 (@krassowski, @jtpio)
• Update the item positions when an item is removed from reactive toolbar #19227 (@brichet, @krassowski)
• Translate builder service error messages #19174 (@MUFFANUJ, @brichet, @krassowski)
• Fix active cell prompt and source blink in notebook tools & prevent a memory leak #19168 (@MUFFANUJ, @krassowski)
• Show "starting" rather than "idle" status when changing kernel via SessionContext.changeKernel() #19166 (@Zsailer, @krassowski)
• Improve keyboard navigation in settings editor > keyboard shortcuts #19159 (@IsabelParedes, @krassowski, @tonyfast)
• Preserve drive name for root-level sessions #19157 (@jtpio, @krassowski)

Maintenance and upkeep improvements

• Update links to jupyter-ydoc API after docs pages moved #19790 (@krassowski, @brichet, @jtpio)
• Use explicit Galata report window #19757 (@MUFFANUJ, @krassowski)
• CI: align Yarn cache configuration #19737 (@zihjiang, @MUFFANUJ, @krassowski)
• Disable subshell usage in comm example #19725 (@krassowski, @MUFFANUJ)
• Add code comment guidelines to AGENTS.md #19724 (@jtpio, @krassowski)
• Remove pin to old ipykernel v7 pre-release in UI tests #19672 (@krassowski, @MUFFANUJ)
• Use Galata filebrowser helpers in tests #19645 (@Darshan808, @MUFFANUJ, @krassowski)
• Restore running examples tests on CI #19607 (@krassowski, @MUFFANUJ)
• Harden type checks by removing any #19581 (@MUFFANUJ, @krassowski)
• Improve Python typing coverage for JupyterLab server modules #19557 (@MUFFANUJ, @krassowski)
• Update Altair snapshot #19488 (@jtpio, @krassowski)
• Update the copyright year to 2026 #19308 (@JussiRoos, @krassowski)
• Update @jupyter/eslint-plugin to v1.1, adopt new rules #19307 (@krassowski, @jtpio)
• Use ui-test-report-comment action from maintainer-tools #19290 (@krassowski, @MUFFANUJ)
• Make singleton the default for core library packages #19251 (@Darshan808, @jtpio, @krassowski)
• Fix issues exposed by mypy in build & error handlers, extension upgrade & debug logger #19231 (@MUFFANUJ, @krassowski)
• Update to Playwright 1.62 #19215 (@jtpio, @jasongrout)
• Update Altair snapshot #19204 (@krassowski, @MUFFANUJ)
• Switch pre-commit to language: system #19193 (@krassowski, @jtpio)
• Skip fork PR review triggers for snapshot updates #19171 (@MUFFANUJ, @brichet)
• Add flaky-test guardrails to Galata tests via eslint-plugin-playwright #19106 (@Darshan808, @krassowski)

Documentation improvements

• Remove CLAUDE.md in favor of AGENTS.md #19774 (@jarrensj, @krassowski)
• Fix the IPython display link in the json-extension README #19732 (@jtpio, @krassowski)
• Update JEP 91 link to the new MyST docs URL #19212 (@jtpio, @Yann-P, @krassowski)
• Update announcement banner to point to jupyter-wide announcement banner #19189 (@jasongrout, @jtpio, @krassowski)
• Add documentation about Metadata Editor - Advanced Tools interface #18668 (@amanparganiha, @cmarmo, @krassowski)

Other merged PRs

• Bump nanoid from 3.3.11 to 3.3.18 in /jupyterlab/tests/mock_packages/test-hyphens-underscore #19416 (@krassowski)
• Bump nanoid from 3.3.11 to 3.3.18 in /jupyterlab/tests/mock_packages/test_no_hyphens #19314 (@krassowski)
• Bump dompurify from 3.4.12 to 3.4.13 #19252 (@krassowski)
• Bump mermaid from 11.15.0 to 11.16.1 #19248 (@krassowski)
• Bump socket.io-parser from 4.2.6 to 4.2.7 #19241 (@jtpio)
• Bump fast-uri from 3.1.2 to 3.1.5 #19240 (@jtpio)
• Bump dompurify from 3.4.11 to 3.4.12 #19209 (@krassowski)
• Bump linkify-it from 5.0.1 to 5.0.2 #19208 (@krassowski)
• Bump svgo from 3.3.2 to 3.3.4 #19207 (@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)

@amanparganiha (activity) | @bollwyvl (activity) | @brichet (activity) | @cmarmo (activity) | @Copilot (activity) | @Darshan808 (activity) | @davidbrochart (activity) | @dlqqq (activity) | @DTiming24 (activity) | @fly1d (activity) | @GagandeepSingh20 (activity) | @IsabelParedes (activity) | @jarrensj (activity) | @jasongrout (activity) | @jtpio (activity) | @JussiRoos (activity) | @krassowski (activity) | @Meriem-BenIsmail (activity) | @MUFFANUJ (activity) | @Sumitha007 (activity) | @tomatotomata (activity) | @tonyfast (activity) | @Whning0513 (activity) | @Yann-P (activity) | @zihjiang (activity) | @Zsailer (activity)