import type { ChildProcess } from 'node:child_process';
export declare function relayRestartDelayMs(consecutiveShortRuns: number): number;
export declare function superviseRelay(input: {
    start: () => ChildProcess;
    signal: AbortSignal;
    now?: () => number;
    wait?: (delayMs: number, signal: AbortSignal) => Promise<void>;
}): Promise<{
    restarts: number;
}>;
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