export declare class ApiError extends Error {
    readonly status: number;
    readonly code?: string | undefined;
    constructor(status: number, message: string, code?: string | undefined);
}
export declare function out(data: unknown): void;
/** The only writer for untrusted text: strips ANSI and C0/C1 controls. */
export declare function sanitizeLine(text: string): string;
/** Every version the route caps at 32 printable ASCII chars. */
export declare function boundedVersion(text: string): string | undefined;
export declare function outLine(line: string): void;
/** `connect --all` nests a harness's own lines under its step header. */
export declare function setErrIndent(prefix: string): void;
export declare function errLine(line: string): void;
/** Advisory stderr line, yellow on a terminal and plain everywhere else so piped output stays clean. */
export declare function warnLine(line: string): void;
export declare function err(data: unknown): void;
export declare function handleApiError(e: unknown): never;
/** Undefined, not a throw: callers hand the value to a Zod safeParse. */
export declare function parseJson(text: string): unknown;