Bump @lumino to latest version in packages/phosphor#4424
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[WIP] Bump @lumino to latest version
Bump @lumino to latest version in packages/phosphor
Jul 23, 2025
Co-authored-by: GordonSmith <966863+GordonSmith@users.noreply.github.com>
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* Initial plan * Update Lumino packages to latest versions (v2.x) Co-authored-by: GordonSmith <966863+GordonSmith@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: GordonSmith <966863+GordonSmith@users.noreply.github.com>
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Updated all Lumino dependencies in the
packages/phosphorpackage from v1.x to the latest v2.x versions:Changes Made
packages/phosphor/package.jsonValidation
✅ Phosphor package builds successfully with updated dependencies
✅ Entire monorepo builds (27 projects including phosphor)
✅ TypeScript compilation passes without errors
✅ All expected exports remain available through phosphor-shim.ts
✅ CSS imports continue to work correctly
✅ Linting passes without issues
✅ Demo gallery builds successfully (downstream compatibility verified)
Why No Breaking Changes
Lumino maintained excellent backward compatibility between v1.x and v2.x major versions. The phosphor package uses a shim pattern (
phosphor-shim.ts) that isolates Lumino dependencies, and all the APIs we use (widgets, commands, messaging, algorithm) remained stable across the version boundary.This upgrade brings the latest bug fixes, performance improvements, and security updates from the Lumino project while maintaining full compatibility with existing code.
Fixes #4423.
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