/**
 * ChatML detection + payload pretty-print. Pure and total. Output is ALWAYS
 * plain text/data — nothing here interprets HTML (the transcript/IO renderers
 * inherit the no-dangerouslySetInnerHTML invariant from these totals).
 */
import type { ChatMessage } from "./types.js";
/** Parse a value as a chat-message array (`[{role, content}, …]`) or null when it is not one. */
export declare function asChat(value: string): ChatMessage[] | null;
/** Pretty-print a stringified value as JSON when parseable, else leave it raw. Always plain text. */
export declare function prettyValue(value: string): string;
/** True when a message's content is redacted OR is/contains redacted thinking/reasoning. Pure, total. */
export declare function isRedactedThinking(m: ChatMessage): boolean;
/** Extract a plain-text body from a message's content (string, or joined text/thinking blocks). Total. */
export declare function contentText(content: unknown): string;