/**
 * Interface for a generic key-value store.
 */
export interface KeyValueStore<K, V> {
    /**
     * Clears the store, removing all key-value pairs.
     *
     * @returns A promise that resolves when the store has been cleared.
     */
    clear(): Promise<void>;
    /**
     * Closes the store, freeing up any resources used. After calling this method, no other operations can be performed on the store.
     *
     * @returns A promise that resolves when the store has been closed.
     */
    close(): Promise<void>;
    /**
     * Deletes a key-value pair from the store.
     *
     * @param key - The key of the value to delete.
     * @returns A promise that resolves to true if the element existed and has been removed, or false if the element does not exist.
     */
    delete(key: K): Promise<boolean | void>;
    /**
     * Fetches a value from the store given its key.
     *
     * @param key - The key of the value to retrieve.
     * @returns A promise that resolves with the value associated with the key, or `undefined` if no value exists for that key.
     */
    get(key: K): Promise<V | undefined>;
    /**
     * Sets the value for a key in the store.
     *
     * @param key - The key under which to store the value.
     * @param value - The value to be stored.
     * @returns A promise that resolves when the value has been set.
     */
    set(key: K, value: V): Promise<void>;
}
/**
 * Represents an object type where a subset of keys are required and everything else is optional.
 */
export type RequireOnly<T, K extends keyof T, O extends keyof T = never> = Required<Pick<T, K>> & Omit<Partial<T>, O>;
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