/**
 * How what passes between members reads, in one place.
 *
 * Three events carry a board: a member posted, a member was handed what it had
 * not seen, a member asked for something and was granted it or refused. Two
 * displays draw them - the console, and a herdr pane - and a run is compared
 * against another run by reading them, so the two have to say the same thing in
 * the same words. Written twice they drift, and the drift is only ever noticed
 * by whoever is trying to compare.
 *
 * The **quiet one is why this exists at all**: a member handed nothing is what
 * tells three members racing apart from three models thinking alike.
 */
import type { SubagentEvent } from "../events.ts";
/** Whose pane this is, when the line is drawn somewhere that already knows. */
export type TrafficOptions = {
    /**
     * The member this line is being shown to.
     *
     * Its own name is dropped when it matches: a pane headed `member#2` saying
     * `member#2` on every line spends width on what the header already said. The
     * board's own pane passes nothing, because there the author is the point.
     */
    self?: string;
};
/**
 * One line for a board event, or `undefined` for everything else.
 *
 * `undefined` rather than an empty string: a caller writes a line or does not,
 * and an empty one is a blank row in a pane nobody asked for.
 */
export declare function trafficLine(event: SubagentEvent, options?: TrafficOptions): string | undefined;
//# sourceMappingURL=traffic.d.ts.map