import { LevelDbControllerMetrics } from "./metrics.js";
/** Shortcut for Uint8Array based DatabaseController */
export type Db = DatabaseController<Uint8Array, Uint8Array>;
export type DatabaseOptions = {
    name: string;
};
export interface FilterOptions<K> {
    gt?: K;
    gte?: K;
    lt?: K;
    lte?: K;
    reverse?: boolean;
    limit?: number;
    /** For metrics */
    bucketId?: string;
}
export type DbReqOpts = {
    /** For metrics */
    bucketId?: string;
};
export interface KeyValue<K, V> {
    key: K;
    value: V;
}
export type DbBatchOperation<K, V> = {
    type: "del";
    key: K;
} | {
    type: "put";
    key: K;
    value: V;
};
export type DbBatch<K, V> = DbBatchOperation<K, V>[];
export interface DatabaseController<K, V> {
    close(): Promise<void>;
    /** To inject metrics after CLI initialization */
    setMetrics(metrics: LevelDbControllerMetrics): void;
    get(key: K, opts?: DbReqOpts): Promise<V | null>;
    getMany(key: K[], opts?: DbReqOpts): Promise<(V | undefined)[]>;
    put(key: K, value: V, opts?: DbReqOpts): Promise<void>;
    delete(key: K, opts?: DbReqOpts): Promise<void>;
    batchPut(items: KeyValue<K, V>[], opts?: DbReqOpts): Promise<void>;
    batchDelete(keys: K[], opts?: DbReqOpts): Promise<void>;
    batch(batch: DbBatch<K, V>, opts?: DbReqOpts): Promise<void>;
    keysStream(opts?: FilterOptions<K>): AsyncIterable<K>;
    keys(opts?: FilterOptions<K>): Promise<K[]>;
    valuesStream(opts?: FilterOptions<K>): AsyncIterable<V>;
    values(opts?: FilterOptions<K>): Promise<V[]>;
    entriesStream(opts?: FilterOptions<K>): AsyncIterable<KeyValue<K, V>>;
    entries(opts?: FilterOptions<K>): Promise<KeyValue<K, V>[]>;
}
//# sourceMappingURL=interface.d.ts.map