/**
 * Creates a function that provides type-safe prepared statements for a D1 database
 *
 * This function wraps a D1Database instance to provide a more convenient API for
 * creating prepared statements with template literals. It performs validation
 * to ensure the database connection is established.
 *
 * @param db - The D1Database instance to wrap
 * @returns A function that can be used to create prepared statements with the provided database
 * @throws Error if the database connection is not established
 *
 * @example
 * ```typescript
 * // In a Cloudflare Worker
 * const prepareD1 = await wrapD1(env.DB);
 *
 * // Then use it to create prepared statements
 * const users = await prepareD1()`SELECT * FROM users WHERE id = ${userId}`.all();
 * ```
 */
export declare const wrapD1: (db: D1Database) => (strings: string | TemplateStringsArray, ...values: any[]) => D1PreparedStatement;