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fix(core): default tool-call input to empty object when undefined in convertToModelMessages #14356

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fix(core): default tool-call input to empty object when undefined in convertToModelMessages #14356

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fix(core): default tool-call input to {} when undefined in convertToM…
hijingsong Apr 11, 2026
cd27ed6
fix(core): default tool-call input to empty object in output-error br…
hijingsong Apr 12, 2026
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2 changes: 1 addition & 1 deletion packages/ai/src/ui/convert-to-model-messages.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -206,7 +206,7 @@ export async function convertToModelMessages<UI_MESSAGE extends UIMessage>(
part.state === 'output-error'
? (part.input ??
('rawInput' in part ? part.rawInput : undefined))
: part.input,
: (part.input ?? {}),
providerExecuted: part.providerExecuted,
...(part.callProviderMetadata != null
? { providerOptions: part.callProviderMetadata }
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