feat(snapshots): Add snapshot group sidecar override#271
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cameroncooke merged 2 commits intoJun 16, 2026
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Introduce a `.snapshotGroup(...)` view modifier that lets authors override the top-level `group` field in the exported JSON sidecar. Accepts a custom string or a `SnapshotGroup` strategy: `.default` keeps the generated group, `.custom` uses a provided name, and `.module` groups by the preview container's module name. Previously the sidecar `group` was always derived from the preview name, file path, and module with no way to influence it. The override is plumbed from the preference key through the rendering strategies and resolved during export, with empty or whitespace-only custom values falling back to the generated group. Exported filenames and manifest output are unaffected. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Exercise the new snapshotGroup modifier across the DemoModule card previews by grouping them under "Card Views" and overriding OSVersionView to the module group. Remove the unused snapshotDiffThreshold override from RideShareButton now that grouping covers the demo coverage.
NicoHinderling
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Jun 16, 2026
cameroncooke
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Snapshot previews can now override the top-level JSON sidecar
groupfield with.snapshotGroup("...")or use.snapshotGroup(.module)to group by the preview container module. When no override is provided,.defaultis used, the custom value is empty, or module extraction is unavailable, exports keep the existing generated group fallback.The override is intentionally limited to sidecar metadata: exported PNG/JSON filenames and all-image-names manifest output are unchanged. The change threads the new shared
SnapshotGroupmodel through the existing metadata preference/rendering/export path and adds coordinator and preference coverage for trimming, fallback behavior, module grouping, nestedcontext.group, and filename stability.Refs EME-1187