import type { Database } from './types.js';
export type MaybePromise<T> = T | Promise<T>;
/**
 * Resolves the database available to one request.
 *
 * Bindings are deliberately opaque to the API. A Node adapter can ignore them,
 * while an edge adapter can read a runtime binding (for example, a Hyperdrive
 * connection) without coupling Hookfish to that runtime.
 */
export interface DatabaseBinding<Bindings extends object = object> {
    getDatabase(bindings: Bindings): MaybePromise<Database>;
    migrate?(bindings: Bindings): MaybePromise<void>;
}
/** A ready Hookfish database is also accepted for simple and embedded hosts. */
export type DatabaseInput<Bindings extends object = object> = Database | Promise<Database> | DatabaseBinding<Bindings>;
export declare function defineDatabase<Bindings extends object = object>(getDatabase: (bindings: Bindings) => MaybePromise<Database>, migrate?: (bindings: Bindings) => MaybePromise<void>): DatabaseBinding<Bindings>;
export declare function resolveDatabase<Bindings extends object>(input: DatabaseInput<Bindings>, bindings: Bindings): Promise<Database>;
export declare function migrateDatabase<Bindings extends object>(input: DatabaseInput<Bindings>, bindings: Bindings): Promise<void>;
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