Locate the fix and the responsibility
A decision aid combining this note’s ownership rules with contribution criteria
Does an existing component fit?
Check behavior, context and accessibility.
Yes
Reuse it
Test in the page.
No
Is the need shared and stable?
Evidence across products; a useful boundary for common fixes.
No
Keep local
Name the owner.
Yes
Can a shared owner support it?
A stable API, versatile implementation, and tests in representative contexts.
Yes
Share it
Package checks + consumer checks
If readiness is unproven, keep ownership explicit while testing. Reassess the boundary when evidence or usage changes.
Conceptual illustration • not measured data