import { Database, DatabaseOptions } from "midb";
/**
 * This is the compatibility layer for any ea.ts
 * database instance.
 * @template T - The generic type to support the custom driver.
 * @template Args - The generic type that represents the type of the abstract `<delete | get | set | has>Value` method parameters.
 */
export declare abstract class BaseDatabase<T, Args> {
    /**
     * The custom database instance.
     */
    abstract driver: T;
    /**
     * Deletes a value from the database.
     * @template Args - Generic type for method arguments.
     * @template Return - Generic type for method return.
     * @param args - The arguments for this method.
     */
    abstract deleteValue<Return>(args: Args): Return | Promise<Return>;
    /**
     * Returns a value saven in the database.
     * @template Args - Generic type for method arguments.
     * @template Return - Generic type for method return.
     * @param args - The arguments for this method.
     */
    abstract getValue<Return>(args: Args): Return | Promise<Return>;
    /**
     * Check whether the database has the given value.
     * @template Args - Generic type for method arguments.
     * @template Return - Generic type for method return.
     * @param args - The arguments for this method.
     */
    abstract hasValue<Return>(args: Args): Return | Promise<Return>;
    /**
     * Set a value in the database.
     * @template Args - Generic type for method arguments.
     * @template Return - Generic type for method return.
     * @param args - The arguments for this method.
     */
    abstract setValue<Return>(args: Args): Return | Promise<Return>;
    /**
     * Set the `start` method of the given database driver.
     * @param callback - Database method to call.
     * @returns {void | Promise<void>}
     */
    abstract start<U extends () => any>(callback: U): void | Promise<void>;
}
/**
 * Method parameter interface for the native database.
 */
export interface NativeDatabaseMethodParameters {
    /**
     * The value identificator.
     */
    key: string;
    /**
     * The variable value.
     */
    value: string;
    /**
     * Table name to save the value into.
     */
    table?: string;
}
/**
 * The default database driver provided in ea.ts
 */
export declare class NativeDatabase extends BaseDatabase<Database, NativeDatabaseMethodParameters> {
    /**
     * The driver of this database.
     */
    driver: Database;
    /**
     * Starts an instance of this database.
     * @param options - Database options.
     */
    constructor(options: DatabaseOptions);
    /**
     * Delete a value from the database.
     * @param args
     * @returns {Promise<void>}
     */
    deleteValue<Return = void>({ key, table }: Omit<NativeDatabaseMethodParameters, "value">): Promise<Return>;
    /**
     * Delete a value from the database.
     * @param args
     * @returns {Promise<void>}
     */
    hasValue<Return = boolean>({ key, table }: Omit<NativeDatabaseMethodParameters, "value">): Promise<Return>;
    /**
     * Delete a value from the database.
     * @param args
     * @returns {Promise<void>}
     */
    getValue<Return>({ key, table }: NativeDatabaseMethodParameters): Promise<Return>;
    /**
     * Delete a value from the database.
     * @param args
     * @returns {Promise<void>}
     */
    setValue<Return = void>({ key, value, table }: NativeDatabaseMethodParameters): Promise<Return>;
    /**
     * Starts the database driver.
     * @param callback - Callback to start the database driver with.
     */
    start<U extends () => any>(callback: U): void;
}