/** Record shape for to child run tool input. */
export declare function toChildRunToolInputRecord(value: unknown): Record<string, unknown>;
/**
 * Throw if child run aborted helper.
 *
 * The cancellation reason a caller attached is the only record of why a child
 * run stopped, so it is rethrown as-is; this delegates to the framework's one
 * abort normalizer rather than repeating that decision here.
 */
export declare function throwIfChildRunAborted(abortSignal?: AbortSignal): void;
/** Error shape for is child run abort. */
export declare function isChildRunAbortError(error: unknown): boolean;
/** Error shape for format child run stream part. */
export declare function formatChildRunStreamPartError(error: unknown): string;
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