export interface Mergeable<Value> {
    value(): Value;
    merge(remote: unknown): void;
    snapshot(): unknown;
}
export declare function forgeCounterCrdt(source: string): Mergeable<number> & {
    add(amount: number): void;
};
export declare function forgeObservedSet<Value>(identify: (value: Value) => string): Mergeable<readonly Value[]> & {
    add(value: Value): void;
    remove(value: Value): void;
};
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