import type { ChatMessageMetadata, ChatUiMessageChunk } from "./protocol.js";
/** Options accepted by hosted UI chunk mapping. */
export type HostedUiChunkMappingOptions = {
    messageId?: string | null;
    reasoningMessageId?: string | null;
    sendReasoning?: boolean;
    sendSources?: boolean;
    onError?: (error: unknown) => string;
};
export type HostedStreamSourcePart = {
    type: "source";
    id: string;
    sourceType: "url";
    url: string;
    title?: string;
} | {
    type: "source";
    id: string;
    sourceType: "document";
    mediaType: string;
    title?: string;
    filename?: string;
};
/** Public API contract for hosted stream part for UI chunk mapping. */
export type HostedStreamPartForUiChunkMapping = {
    type: "start";
} | {
    type: "start-step";
} | {
    type: "finish-step";
} | {
    type: "finish";
    finishReason?: string;
} | {
    type: "abort";
} | {
    type: "reasoning-start";
    id: string;
} | {
    type: "reasoning-delta";
    id: string;
    text: string;
} | {
    type: "reasoning-end";
    id: string;
    signature?: string;
    redactedData?: string;
} | {
    type: "text-start";
    id: string;
} | {
    type: "text-delta";
    id: string;
    text: string;
} | {
    type: "text-end";
    id: string;
} | HostedStreamSourcePart | {
    type: "file";
    file: {
        mediaType: string;
        base64: string;
    };
} | {
    type: "tool-input-start";
    id: string;
    toolName: string;
} | {
    type: "tool-input-delta";
    id: string;
    delta: string;
} | {
    type: "tool-call";
    toolCallId: string;
    toolName: string;
    input: unknown;
    invalid: true;
    error: unknown;
} | {
    type: "tool-call";
    toolCallId: string;
    toolName: string;
    input: unknown;
    invalid?: false;
} | {
    type: "tool-approval-request";
    approvalId: string;
    toolCall: {
        toolCallId: string;
    };
} | {
    type: "tool-result";
    toolCallId: string;
    toolName: string;
    input: unknown;
    output: unknown;
} | {
    type: "tool-error";
    toolCallId: string;
    toolName: string;
    input: unknown;
    error: unknown;
} | {
    type: "tool-output-denied";
    toolCallId: string;
} | {
    type: "error";
    error: unknown;
} | {
    type: "tool-input-end";
} | {
    type: "raw";
};
/** Map hosted stream part to chat UI chunks. */
export declare function mapHostedStreamPartToChatUiChunks(part: HostedStreamPartForUiChunkMapping, options?: HostedUiChunkMappingOptions): ChatUiMessageChunk<ChatMessageMetadata>[];
//# sourceMappingURL=hosted-ui-chunk-mapping.d.ts.map