[DEPR]: edx-pattern-library npm references

[sarina]

RFC Start Date

TBD

Target Plan Accepted Date

TBD

Target Transition Unblocked Date

TBD

Earliest Breaking Changes Unblocked Date

TBD

Earliest Open edX Named Release with Breaking Changes

Ulmo - 2025-10

Rationale

Deprecate usage of https://www.npmjs.com/package/edx-pattern-library, published from an older edX-owned repo and used throughout legacy frontends.

This DEPR may or may not be blocked on full migration to MFEs. This needs to be investigated.

Removal

Usage of https://www.npmjs.com/package/edx-pattern-library

Replacement

Replaced by migration to MFEs.

Deprecation

No response

Migration

No response

Additional Info

See the npm package migration and deprecation list for a full audit of npm packages used within the Open edX codebase.

Task List

No response

Task List

No response

[feanil]

This will get done as a part of dropping legacy frontend but we're keeping the tickets so we don't forget about this.