feat(results): export results as image - #573
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Add an 'Export as image' action to the results screen so users can save and share a snapshot of their listening stats. The button captures the active results view with html-to-image (toPng) and downloads a timestamped PNG, picking up the current light/dark background for a legible card.
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1️⃣ First
🔇 Problem
Closes #189.
There was no way to save or share the results screen. Users who want to show off or keep a snapshot of their listening stats had to resort to manual screenshots, which are inconsistent across devices and lose quality.
🎹 Proposal
Add an "Export as image" action to the results screen. The button captures the currently displayed results view and downloads it as a shareable PNG card.
Capture is handled by
html-to-image(toPng), the maintained, generic option agreed on in the issue discussion. It correctly renders fonts and the D3/Observable Plot SVG charts, and it leaves room to grow toward richer custom share images later.Details:
tracksy-YYYY-MM-DD.png).dark:variants, shared button styling).Capture logic lives in a small, testable
exportElementAsImageutility, kept separate from theExportButtonUI.🎶 Comments
Scope is intentionally kept to a clean first version: a single export of the active results container. The button lives in the results view, so whichever tab is on screen (Simple, Lab, Chat, Query) is what gets exported.
🎤 Test
Automated:
moon run app:format,moon run app:lint,moon run app:typecheck,moon run app:testall pass.exportElementAsImageutility (capture + download, filename format, error propagation) and theExportButtoncomponent (render, click-to-capture, failure state, missing target).html-to-imageis mocked viavi.spyOn.Manual:
moon run app:dev.