import type { AttachRecord } from "../../debugger/attach/registry.js";
import type { StatusMessage } from "../../debugger/attach/protocol.js";
/** A registered program and what its socket said, or null when it has
 *  no socket open (no session) or did not answer. */
export type ProbedProgram = {
    record: AttachRecord;
    status: StatusMessage | null;
};
export type Target = {
    kind: "program";
    record: AttachRecord;
} | {
    kind: "refused";
    reason: string;
};
export declare function resolveTarget(pid: number | undefined, probed: readonly ProbedProgram[], checked: (pid: number) => AttachRecord | {
    refused: string;
}): Target;
/** The SESSION column of `list`. */
export declare function sessionWords(status: StatusMessage | null, now: number): string;