falsy

lesson

javascript svelte state-management falsy sentinel-values ui-bugs

484 tok

Storing an 'off' selection as empty string makes it unrepresentable when the read path uses || default fallback

Symptom A style/mode picker has a "None"/"Blank" option. Clicking it appears to do nothing: the UI instantly snaps back to the default option. The server write actually SUCCEEDS — the persisted field really is '' — which makes this confusing to debug, because the bug is on the read path, not the…

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