import type { FileCitation } from '../models/filecitation.js';
import type { FilePath } from '../models/filepath.js';
import type { FunctionCallArgsDeltaEvent } from '../models/functioncallargsdeltaevent.js';
import type { FunctionCallArgsDoneEvent } from '../models/functioncallargsdoneevent.js';
import type { OpenAIResponsesRefusalContent } from '../models/openairesponsesrefusalcontent.js';
import type { OutputFileSearchCallItem } from '../models/outputfilesearchcallitem.js';
import type { OutputFunctionCallItem } from '../models/outputfunctioncallitem.js';
import type { OutputImageGenerationCallItem } from '../models/outputimagegenerationcallitem.js';
import type { OutputMessage } from '../models/outputmessage.js';
import type { OutputReasoningItem } from '../models/outputreasoningitem.js';
import type { OutputWebSearchCallItem } from '../models/outputwebsearchcallitem.js';
import type { ReasoningDeltaEvent } from '../models/reasoningdeltaevent.js';
import type { ResponseOutputText } from '../models/responseoutputtext.js';
import type { StreamEvents } from '../models/streamevents.js';
import type { StreamEventsResponseCompleted } from '../models/streameventsresponsecompleted.js';
import type { StreamEventsResponseFailed } from '../models/streameventsresponsefailed.js';
import type { StreamEventsResponseIncomplete } from '../models/streameventsresponseincomplete.js';
import type { StreamEventsResponseOutputItemAdded } from '../models/streameventsresponseoutputitemadded.js';
import type { StreamEventsResponseOutputItemDone } from '../models/streameventsresponseoutputitemdone.js';
import type { TextDeltaEvent } from '../models/textdeltaevent.js';
import type { URLCitation } from '../models/urlcitation.js';
/**
 * Type guards for OpenResponses stream events
 * These enable proper TypeScript narrowing without type casts
 */
export declare function isOutputTextDeltaEvent(event: StreamEvents): event is TextDeltaEvent;
export declare function isReasoningDeltaEvent(event: StreamEvents): event is ReasoningDeltaEvent;
export declare function isFunctionCallArgumentsDeltaEvent(event: StreamEvents): event is FunctionCallArgsDeltaEvent;
export declare function isOutputItemAddedEvent(event: StreamEvents): event is StreamEventsResponseOutputItemAdded;
export declare function isOutputItemDoneEvent(event: StreamEvents): event is StreamEventsResponseOutputItemDone;
export declare function isResponseCompletedEvent(event: StreamEvents): event is StreamEventsResponseCompleted;
export declare function isResponseFailedEvent(event: StreamEvents): event is StreamEventsResponseFailed;
export declare function isResponseIncompleteEvent(event: StreamEvents): event is StreamEventsResponseIncomplete;
export declare function isFunctionCallArgumentsDoneEvent(event: StreamEvents): event is FunctionCallArgsDoneEvent;
export declare function isOutputMessage(item: unknown): item is OutputMessage;
export declare function isFunctionCallItem(item: unknown): item is OutputFunctionCallItem;
export declare function isReasoningOutputItem(item: unknown): item is OutputReasoningItem;
export declare function isWebSearchCallOutputItem(item: unknown): item is OutputWebSearchCallItem;
export declare function isFileSearchCallOutputItem(item: unknown): item is OutputFileSearchCallItem;
export declare function isImageGenerationCallOutputItem(item: unknown): item is OutputImageGenerationCallItem;
export declare function isOutputTextPart(part: unknown): part is ResponseOutputText;
export declare function isRefusalPart(part: unknown): part is OpenAIResponsesRefusalContent;
export declare function isFileCitationAnnotation(annotation: unknown): annotation is FileCitation;
export declare function isURLCitationAnnotation(annotation: unknown): annotation is URLCitation;
export declare function isFilePathAnnotation(annotation: unknown): annotation is FilePath;
export declare function hasTypeProperty(item: unknown): item is {
    type: string;
};
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