import type { ModelId, ProviderId } from './providers.js';
import type { NormalizedProviderError } from './errors.js';
import type { ToolCall, ToolCallDelta, ToolResult } from './tools.js';
export declare const streamEventTypes: readonly ["reasoning_delta", "content_delta", "tool_call_start", "tool_call_delta", "tool_call_result", "status", "error", "done"];
export type StreamEventType = (typeof streamEventTypes)[number];
export type FinishReason = 'stop' | 'length' | 'tool_calls' | 'content_filter' | 'error' | 'cancelled' | 'unknown';
export interface TokenUsage {
    inputTokens?: number;
    outputTokens?: number;
    reasoningTokens?: number;
    totalTokens?: number;
    providerRawUsage?: unknown;
}
export interface ReasoningDeltaEvent {
    type: 'reasoning_delta';
    data: {
        delta: string;
        kind?: 'summary' | 'summary_done' | 'hidden' | 'signature' | (string & {});
        metadata?: Record<string, unknown>;
    };
}
export interface ContentDeltaEvent {
    type: 'content_delta';
    data: {
        delta: string;
        index?: number;
        metadata?: Record<string, unknown>;
    };
}
export interface ToolCallStartEvent {
    type: 'tool_call_start';
    data: ToolCall;
}
export interface ToolCallDeltaEvent {
    type: 'tool_call_delta';
    data: ToolCallDelta;
}
export interface ToolCallResultEvent {
    type: 'tool_call_result';
    data: ToolResult;
}
export interface StatusEvent {
    type: 'status';
    data: {
        status: 'started' | 'selected_model' | 'retrying' | 'tool_calling' | 'completed' | (string & {});
        providerId?: ProviderId;
        modelId?: ModelId;
        sentropicResponseId?: string;
        providerResponseId?: string;
        message?: string;
        metadata?: Record<string, unknown>;
    };
}
export interface ErrorEvent {
    type: 'error';
    data: NormalizedProviderError;
}
export interface DoneEvent {
    type: 'done';
    data: {
        finishReason?: FinishReason;
        usage?: TokenUsage;
        responseId?: string;
        sentropicResponseId?: string;
        providerResponseId?: string;
        providerId?: ProviderId;
        modelId?: ModelId;
        metadata?: Record<string, unknown>;
    };
}
export type StreamEvent = ReasoningDeltaEvent | ContentDeltaEvent | ToolCallStartEvent | ToolCallDeltaEvent | ToolCallResultEvent | StatusEvent | ErrorEvent | DoneEvent;
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