/**
 * Audit logging for state-modifying Teams actions.
 *
 * Emits structured JSON Lines to stderr or a file for compliance and audit trails.
 * Controlled by the TEAMS_AUDIT_LOG environment variable:
 *   - "off" or unset — no audit logging (default)
 *   - "stderr" — write to stderr
 *   - "file:/path/to/audit.jsonl" — append to file
 *
 * Audit failures are silent — they must never break the tool.
 */
import type { AuditDestination, AuditEvent } from "./types.js";
/** Resolve the audit destination from the TEAMS_AUDIT_LOG environment variable. */
export declare function resolveAuditDestination(): AuditDestination;
/** Emit a structured audit event to the configured destination. */
export declare function emitAuditEvent(event: AuditEvent): void;
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