import { type BatchResult, type DatabaseDriver, type MigrationRunner, type PreparedStatement } from "@aotter/mantle-runtime";
/**
 * `DatabaseDriver` impl wrapping Cloudflare's `D1Database` binding.
 *
 * The runtime port shape is intentionally close to D1's API (which is
 * itself close to the SQLite C API), so this wrapper is mostly a
 * type-narrowing pass-through. The shared SQLite runner records applied
 * migrations so subsequent boots are idempotent.
 *
 * Per ADR-0011 the runtime never imports `D1Database` itself — this
 * file is the only place in the codebase that does.
 */
export declare class D1DatabaseDriver implements DatabaseDriver {
    private readonly db;
    private readonly observe?;
    readonly migrations: MigrationRunner;
    constructor(db: D1Database, observe?: D1QueryObserver | undefined);
    prepare(sql: string): PreparedStatement;
    batch(stmts: ReadonlyArray<PreparedStatement>): Promise<readonly BatchResult[]>;
}
export interface D1QueryMetric {
    readonly sql: string;
    readonly durationMs: number;
    readonly rowsRead: number;
    readonly rowsWritten: number;
}
export type D1QueryObserver = (metric: D1QueryMetric) => void;
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