/**
 * Rotating trivia bank. Add new entries freely; the ticker shuffles per run.
 * Keep each line under 80 chars (terminal-safe) and factual (no marketing
 * hype, no emoji unless it's a single Unicode separator).
 */
export declare const TRIVIA: ReadonlyArray<string>;
export interface TriviaTickerOptions {
    /** Disable the ticker (CI default, --no-trivia, NO_COLOR, non-TTY). */
    readonly disabled: boolean;
    /** Override TRIVIA bank — used by tests. */
    readonly trivia?: ReadonlyArray<string>;
    /** Override delays — used by tests. Default: 1000ms start, 3000ms rotate. */
    readonly startDelayMs?: number;
    readonly rotateMs?: number;
    /** Stream to write to — used by tests. Default: process.stderr. */
    readonly stream?: {
        write: (s: string) => boolean | void;
        isTTY?: boolean;
    };
}
/**
 * Picks the right disabled-state from the environment + flags. Order:
 *   - explicit `--no-trivia` always wins
 *   - non-TTY stderr (piped, redirected, captured): disabled
 *   - CI env var (most CI providers set this): disabled
 *   - NO_COLOR (universal opt-out for any decorative output): disabled
 */
export declare function shouldDisableTrivia(args: {
    readonly noTrivia?: boolean;
    readonly stream?: {
        isTTY?: boolean;
    };
    readonly env?: NodeJS.ProcessEnv;
}): boolean;
/**
 * Start the ticker — call before the async work begins. Returns a stop()
 * function that the caller MUST invoke before printing anything else to
 * stderr (the stop clears the ticker line via `\r\x1b[K`).
 *
 * If `disabled` is true, returns a no-op stop() and the ticker never fires.
 */
export declare function startTriviaTicker(opts: TriviaTickerOptions): () => void;
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