import { type ChatSourceDocumentUiPart, type ChatSourceUrlUiPart, type ChatToolResultPart, type ProviderModelMessage } from "../../chat/types.js";
type RuntimeAttachmentFields = {
    url: string;
    mediaType: string;
    filename?: string;
    uploadId?: string;
    uploadPath?: string;
};
type RuntimeAttachmentPart = ({
    type: "image";
} & RuntimeAttachmentFields) | ({
    type: "file";
} & RuntimeAttachmentFields);
type RuntimeAttachmentLikePart = RuntimeAttachmentPart & {
    upload_id?: string;
    upload_path?: string;
};
type AgentRuntimeMessageLikePart = {
    type: "text";
    text: string;
} | {
    type: "reasoning";
    text?: string;
    signature?: string;
    redactedData?: string;
} | {
    type: string;
    toolCallId: string;
    toolName: string;
    args: Record<string, unknown>;
} | {
    type: string;
    toolCallId: string;
    toolName: string;
    input: Record<string, unknown>;
} | {
    type: "tool_call";
    id?: string;
    name?: string;
    tool_call_id?: string;
    tool_name?: string;
    toolCallId?: string;
    toolName?: string;
    input?: Record<string, unknown>;
    args?: Record<string, unknown>;
} | {
    type: "tool-result";
    toolCallId: string;
    toolName: string;
    result?: unknown;
} | {
    type: "tool-result";
    toolCallId: string;
    toolName: string;
    output: unknown;
} | {
    type: "tool_result";
    tool_call_id?: string;
    tool_name?: string;
    toolCallId?: string;
    toolName?: string;
    result?: unknown;
    output?: unknown;
} | RuntimeAttachmentLikePart | ChatSourceUrlUiPart | ChatSourceDocumentUiPart;
/** Public API contract for agent runtime message part. */
export type AgentRuntimeMessagePart = {
    type: "text";
    text: string;
} | {
    type: "reasoning";
    text?: string;
    signature?: string;
    redactedData?: string;
} | {
    type: string;
    toolCallId: string;
    toolName: string;
    args: Record<string, unknown>;
} | {
    type: "tool-result";
    toolCallId: string;
    toolName: string;
    result: unknown;
} | RuntimeAttachmentPart | ChatSourceUrlUiPart | ChatSourceDocumentUiPart;
/** Message shape for agent runtime. */
export interface AgentRuntimeMessage {
    id: string;
    role: ProviderModelMessage["role"];
    parts: AgentRuntimeMessagePart[];
    timestamp: number;
}
type ProviderReasoningPart = {
    type: "reasoning";
    text?: string;
    signature?: string;
    redactedData?: string;
};
/** Error shape for agent runtime message conversion. */
export declare class AgentRuntimeMessageConversionError extends Error {
    constructor(message: string);
}
/** Return a runtime text part when the value carries text. */
export declare function getAgentRuntimeTextPart(part: unknown): {
    type: "text";
    text: string;
} | null;
/** Return a runtime reasoning part when the value carries reasoning replay state. */
export declare function getAgentRuntimeReasoningPart(part: unknown): ProviderReasoningPart | null;
/** Return a runtime tool-call part when the value carries a tool call. */
export declare function getAgentRuntimeToolCallPart(part: unknown): {
    toolCallId: string;
    toolName: string;
    input: Record<string, unknown>;
} | null;
/** Return a runtime tool-result part when the value carries a tool result. */
export declare function getAgentRuntimeToolResultPart(part: unknown, toolNameFallback?: string): {
    toolCallId: string;
    toolName: string;
    output: unknown;
} | null;
/** Create a chat tool-result part. */
export declare function createToolResultPart(part: {
    toolCallId: string;
    toolName: string;
    output: unknown;
}): ChatToolResultPart;
/** Convert provider messages to agent runtime messages. */
export declare function convertProviderMessagesToAgentRuntimeMessages(messages: readonly ProviderModelMessage[]): AgentRuntimeMessage[];
/** Convert agent runtime messages to provider messages. */
export declare function convertAgentRuntimeMessagesToProviderMessages(messages: ReadonlyArray<Pick<AgentRuntimeMessage, "role"> & {
    parts: ReadonlyArray<AgentRuntimeMessageLikePart>;
}>): ProviderModelMessage[];
export {};
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