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Component subscription registration: Unmount buffer discard · case 05

Unmount buffer discard.

Member previewVariant 5 · 3 implementations · 60 checks per implementation

Case contract

Registration handles differ from topic names. Removing a handle removes all its registrations while preserving other handles and topic reference counts; unmounted consumers receive nothing and discard buffered events. Operation unmount-buffer-discard has the six explicit input/output oracles below.

Why this case matters

An offline client lifecycle model that isolates a state-management defect without DOM rendering or network services.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
unmount-buffer-discard scenario 3	`["old"]`	`[]`	Failed

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