fix(chat): drop malformed user content instead of throwing - #359
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davidmckayv merged 2 commits intoSep 5, 2026
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Reviewed diff against current main; resolved CHANGELOG keep-both; validated locally (format + composed test run). CI green.
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toVisibleChatItems assumed any non-string user content is an array and called .filter on it. Live turns bypass schema validation, so one malformed turn (undefined/null/number) threw TypeError inside render and unmounted the whole transcript.
Fix adds an Array.isArray guard returning [] for non-string non-array content, matching the existing unknown-role policy.
Repro: toVisibleChatItems([{id:"1",role:"user",content:undefined}]) threw before, returns [] after.
Tests: added malformed-content case to app/tests/chat-messages.test.ts (9 pass). Biome clean.