import type { ConnectionState } from './backend.js';
import type { AttachmentRecord } from './identity.js';
import type { AttachmentId, ConnectionId, GenerationId, LeaseId, PeerId } from './primitives.js';
export type ConnectionLifecycleCause = 'connected' | 'backend-transition' | 'requested-disconnect' | 'peer-link-loss' | 'adapter-loss' | 'backend-restart' | 'released' | 'manager-destroyed' | 'backend-failure';
export type ConnectionLifecycleTerminalCause = Exclude<ConnectionLifecycleCause, 'connected' | 'backend-transition'>;
/** One attachment-, lease-, and generation-bound public connection transition. */
export interface ConnectionLifecycleEvent<Attachment extends string> {
    readonly kind: 'connection-lifecycle';
    readonly attachment: AttachmentRecord<Attachment>;
    readonly attachmentId: AttachmentId<Attachment>;
    readonly peerId: PeerId<Attachment>;
    readonly connectionId: ConnectionId<Attachment, string>;
    readonly connectionGeneration: GenerationId<'connection-generation', string>;
    readonly ownerLeaseId: LeaseId<Attachment, string>;
    readonly sequence: number;
    readonly backendIngressOrdinal: number | null;
    readonly previous: ConnectionState;
    readonly current: ConnectionState;
    readonly cause: ConnectionLifecycleCause;
}
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