/**
 * Remove the supervisor pidfile ONLY if it still names this process.
 *
 * The pidfile is last-writer-wins: a second supervisor starting in the same
 * project overwrites it. Deleting it unconditionally on shutdown therefore let
 * an OLD supervisor, exiting hours later, delete the LIVE one's pidfile - after
 * which `npm run build` signalled nothing, silently, and the running session
 * stopped receiving rebuilds while appearing healthy.
 */
export declare function removeOwnPidFile(pidFilePath: string, ownPid: number): Promise<boolean>;
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