import type { Promisable } from '@xylabs/promise';
/**
 * A readonly storage device.
 */
export interface ReadonlyKeyValueStore<TValue, TKey = string> {
    /**
     * Returns a promise that resolves to the value for the given key.
     * @param key The key to get the value for.
     */
    get(key: TKey): Promisable<TValue | undefined>;
    /**
     * The keys an array of keys.
     */
    keys?(): Promisable<TKey[]>;
}
/**
 * A read/write storage device.
 */
export interface KeyValueStore<TValue, TKey = string> extends ReadonlyKeyValueStore<TValue, TKey> {
    /** Removes all entries from the store. */
    clear?(): Promisable<void>;
    /**
     * Deletes the entry with the given key.
     * @param key The key of the entry to delete
     */
    delete(key: TKey): Promisable<void>;
    /**
     * Sets a value for the given key, creating or updating the entry.
     * @param key The key to set
     * @param value The value to store
     */
    set(key: TKey, value: TValue): Promisable<void>;
}
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