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Handle bundled ReadableStream responses in ModelResult #33

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Handle bundled ReadableStream responses in ModelResult #33

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6 changes: 2 additions & 4 deletions packages/agent/src/lib/model-result.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -93,16 +93,14 @@ function isRecord(value: unknown): value is Record<string, unknown> {

/**
* Type guard for stream event with toReadableStream method
* Checks constructor name, prototype, and method availability
* Checks ReadableStream inheritance and method availability
*/
function isEventStream(value: unknown): value is EventStream<models.StreamEvents> {
if (value === null || typeof value !== 'object') {
return false;
}

// Check constructor name for EventStream
const constructorName = Object.getPrototypeOf(value)?.constructor?.name;
if (constructorName === 'EventStream') {
if (typeof ReadableStream !== 'undefined' && value instanceof ReadableStream) {
return true;
}

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