import type { HostedStreamSourcePart } from "../../chat/hosted-ui-chunk-mapping.js";
interface ForkStreamPart {
    type: "reasoning-delta" | "text-delta";
    text: string;
}
export type ForkSourcePart = HostedStreamSourcePart;
interface ForkToolInputStartPart {
    type: "tool-input-start";
    toolCallId: string;
    toolName: string;
}
interface ForkToolInputDeltaPart {
    type: "tool-input-delta";
    toolCallId: string;
    delta: string;
}
interface ForkToolCallPart {
    type: "tool-call";
    toolName: string;
    toolCallId: string;
    input: unknown;
}
interface ForkToolResultPart {
    type: "tool-result";
    toolName: string;
    toolCallId: string;
    input: unknown;
    output: unknown;
}
interface ForkToolErrorPart {
    type: "tool-error";
    toolName: string;
    toolCallId: string;
    input: unknown;
    error: Error;
}
interface ForkErrorPart {
    type: "error";
    error: Error;
}
/** Public API contract for fork runtime step. */
export interface ForkRuntimeStep {
    text: string;
    messages: unknown[];
    toolCalls: Array<{
        toolCallId: string;
        toolName: string;
        input: unknown;
    }>;
    toolResults: Array<{
        toolCallId: string;
        toolName: string;
        input: unknown;
        output: unknown;
    }>;
    finishReason: string | null;
}
/** Public API contract for fork part. */
export type ForkPart = ForkStreamPart | ForkSourcePart | ForkToolInputStartPart | ForkToolInputDeltaPart | ForkToolCallPart | ForkToolResultPart | ForkToolErrorPart | ForkErrorPart;
/** Public API contract for fork runtime stream logger. */
export type ForkRuntimeStreamLogger = {
    warn: (message: string, metadata?: Record<string, unknown>) => void;
};
export {};
//# sourceMappingURL=fork-runtime-types.d.ts.map