Add deprecation shims for bundled_libraries module globals

[masenf]

Type of change

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update

Description

Adds compatibility shims to maintain backward compatibility with downstream packages (notably reflex-enterprise) that read reflex_base.components.dynamic.bundled_libraries and DEFAULT_BUNDLED_LIBRARIES directly.

These module-level globals were moved onto RegistrationContext in a prior breaking change. This PR restores read access to them via __getattr__ hooks that:

1. Resolve against the active RegistrationContext when accessed
2. Emit deprecation warnings (removal in 1.0) directing users to the new API
3. Properly propagate AttributeError for unknown attributes

The shims are implemented in:

• reflex_base.components.dynamic.__getattr__() — handles the actual resolution
• reflex/components/dynamic.__getattr__() — delegates to reflex_base for names the star import misses

Changes

• reflex_base/components/dynamic.py: Added __getattr__() to provide deprecated access to bundled_libraries and DEFAULT_BUNDLED_LIBRARIES, resolving them against the active context with deprecation warnings
• reflex/components/dynamic.py: Added __getattr__() to delegate attribute lookups to reflex_base (needed because star imports don't trigger __getattr__)
• tests/units/reflex_base/components/test_dynamic.py: Comprehensive test coverage for the shims, including context isolation, deprecation warnings, and error handling
• news/6382.breaking.md and news/+bundled-libraries-shim.deprecation.md: Updated breaking change notes to document the deprecation path

Test Plan

Added unit tests covering:

• Shim returns active context's bundled_libraries
• Shim works via reflex namespace (reflex.components.dynamic)
• DEFAULT_BUNDLED_LIBRARIES shim returns correct default list
• Deprecation warnings are emitted with correct feature names
• Unknown attributes raise AttributeError with proper module name

All tests pass with adequate coverage.

Checklist

• Tests pass with adequate coverage
• uv run ruff check . and uv run ruff format . clean
• uv run pyright reflex tests passes
• Documentation updated (news files)
• Deprecation warnings added with proper version info

https://claude.ai/code/session_019RU2VRJPPA3MWrjCGL15sy

[greptile-apps]

Greptile Summary

This PR restores deprecated read compatibility for bundled-library module globals by resolving them through the active registration context.

• Adds compatibility accessors in both the base and re-exported dynamic-component modules.
• Emits migration-oriented deprecation warnings while preserving unknown-attribute errors.
• Adds tests for context isolation, namespace delegation, defaults, warnings, and error handling.
• Updates release notes to document the compatibility period and removal target.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
packages/reflex-base/src/reflex_base/components/dynamic.py	Adds deprecated module-level attribute shims backed by RegistrationContext while preserving standard AttributeError behavior.
reflex/components/dynamic.py	Delegates attributes omitted by the wildcard re-export to the base dynamic-components module.
tests/units/reflex_base/components/test_dynamic.py	Covers active-context resolution, namespace delegation, default values, warning emission, and unknown attributes.
news/+bundled-libraries-shim.deprecation.md	Documents the deprecated compatibility API and recommended replacements.
packages/reflex-base/news/6382.breaking.md	Clarifies that legacy reads remain supported until version 1.0.

_{Reviews (2): Last reviewed commit: "Move bundled-libraries shim news fragmen..." | Re-trigger Greptile}

[codspeed-hq]

Merging this PR will not alter performance

✅ 27 untouched benchmarks
⏩ 8 skipped benchmarks¹

---

_{Comparing claude/reflex-enterprise-shim-mvevpt (ef55b22) with main (f7c848f)²}

Footnotes

1. 8 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (45b8ed5) during the generation of this report, so f7c848f was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩