/**
 * What a run did, read from its trace, for evaluators that judge more than the final answer: the
 * tools it called, the documents it retrieved, the model calls it made, and every image, audio clip,
 * video, and document it received or produced.
 */
import type { EvaluationTrace, MediaPart } from '../types/evaluate.js';
import type { RunTree } from '../types/tracing.js';
/**
 * Reads a trace into what evaluators judge: its root's inputs and outputs, every tool call,
 * retrieval, and model call beneath it in the order they started, and the media they carried, each
 * medium once.
 */
export declare function traceEvidence(root: RunTree): EvaluationTrace;
/**
 * Every image, audio, video, document, and asset part inside a value, in the order they appear: a
 * message's content, a tool's output, a list of them, or an asset an image or video operation
 * returned, which comes back as an asset part.
 */
export declare function mediaParts(value: unknown): MediaPart[];
/** The value as a media part, when it is one: a typed part, or an asset an operation returned. */
export declare function asMediaPart(item: Record<string, unknown>): MediaPart | undefined;