feat(performance-monitor-plugin): add waterfall timeline view#285
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draggie wants to merge 1 commit into
Open
feat(performance-monitor-plugin): add waterfall timeline view#285draggie wants to merge 1 commit into
draggie wants to merge 1 commit into
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Description
Adds a waterfall timeline view to the Performance Monitor plugin. The new view
combines measures, metrics, marks, React Native marks, and resources into a
single chronological visualization so users can inspect ordering, overlap,
durations, and resource phases without replacing the existing table views.
Related Issue
Closes #251
Context
The waterfall complements the existing tabs by providing a timeline-oriented
view for startup and network investigations. Long idle gaps are normalized so
short events remain readable, while event durations remain exact. Resource
rows include phase segments such as worker, redirect, DNS, connect, TLS,
request/waiting, and response where timing data is available.
The details sidebar was adjusted to work alongside the timeline on wide panels
and fall back to an overlay on narrower DevTools layouts. Rows are virtualized
to keep larger sessions responsive.
Testing
Manually checked the waterfall view in the Performance Monitor panel with
a short and long session to verify that timeline units stay in milliseconds and the
visual layout remains readable.