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fix(web): preserve preview session during builds #136

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Merged
iamjr15 merged 1 commit into from
Aug 4, 2026
Merged

fix(web): preserve preview session during builds #136

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6 changes: 4 additions & 2 deletions apps/web/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -27,8 +27,10 @@ live iframe mounted so application state is preserved during ordinary use.
Fresh app-builder projects keep the animated Cheatcode mark visible while the internal starter
scaffold boots and the model generates the requested app. The persisted `app-preview-status`
stream part reveals the iframe only when generated content is ready, and an iframe-load guard keeps
the same mark in place until the final document has loaded. Existing project edits remain visible
and continue hot-reloading normally.
the same mark in place until the final document has loaded. While that mark is visible, the hidden
session exchange remains mounted so the one-minute URL handoff becomes a renewable ten-minute
host cookie before long-running builds finish. Existing project edits remain visible and continue
hot-reloading normally.

## Public exports

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21 changes: 12 additions & 9 deletions apps/web/src/components/preview/preview-side-panel.tsx
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Expand Up @@ -402,15 +402,18 @@ function AppTabContent({
}) {
if (previewPhase === "booting" || isGeneratedPreviewPending) {
return (
<PreviewDeviceFrame
device={frameDevice}
content={
<CheatcodeLoader
className="h-full min-h-[420px] min-w-0 flex-1 bg-bg-secondary"
label={isGeneratedPreviewPending ? "Building preview…" : "Starting preview…"}
/>
}
/>
<>
<PreviewSessionRefresh previewUrl={requestedIframeUrl} />
<PreviewDeviceFrame
device={frameDevice}
content={
<CheatcodeLoader
className="h-full min-h-[420px] min-w-0 flex-1 bg-bg-secondary"
label={isGeneratedPreviewPending ? "Building preview…" : "Starting preview…"}
/>
}
/>
</>
);
}
if (previewPhase === "error") {
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