import type { ByteSource, IOResult } from '../../io/types.ts';
import type { Session } from '../session/session.ts';
/**
 * Finalize a completed statement and seed $? for the next one.
 *
 * Every statement boundary must do the same dance: apply a VALUE
 * barrier so lazily finalized exit codes (grep's exitOnEmpty) are
 * concrete, then record the status the next statement's $? expands
 * to. Statement-list loops (program, subshell, brace group, if/loop/
 * case bodies, function bodies, && / || / ; lists) call this instead
 * of hand-rolling the triple, so a new construct cannot forget it.
 */
export declare function finishStatement(stdout: ByteSource | null, io: IOResult, session: Session): Promise<ByteSource | null>;
/**
 * Exit status of an assignment-only statement.
 *
 * Bash: an assignment statement exits 0 unless expanding it ran
 * command substitutions, in which case the status of the last
 * substitution performed becomes the statement's own.
 */
export declare function assignmentStatus(session: Session, seqBefore: number): number;
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