import type { ArkmeSourceItem } from '../types.js';
export type ArkmeSourceIdentityFacts = Pick<ArkmeSourceItem, 'kind' | 'sourceRef' | 'sourceKey' | 'topicHierarchyKey'>;
export declare function arkmeChatSourceIdentityKey(source: Pick<ArkmeSourceItem, 'sourceRef' | 'sourceKey'>): string;
export declare function arkmeSourceIdentityKey(source: ArkmeSourceIdentityFacts): string;
export declare function arkmePrependSourceByIdentity(source: ArkmeSourceItem, sources: readonly ArkmeSourceItem[]): ArkmeSourceItem[];
//# sourceMappingURL=source-identity.d.ts.map