/**
 * Auto-instrumentation for popular Node.js database libraries.
 *
 * Captures per-query details: masked query string, execution time, duration, source.
 *
 * Supported libraries:
 *   - pg (node-postgres)          — Client.query, Pool.query
 *   - mysql2                      — Connection.query/execute, Pool.query/execute
 *   - mongoose / mongodb driver   — Collection methods (find, insertOne, etc.)
 *   - ioredis                     — Commander.sendCommand
 *   - knex                        — Client.query
 *   - prisma (@prisma/client)     — PrismaClient._request
 *   - better-sqlite3              — Database.prepare().run/get/all
 *   - sequelize                   — Sequelize.query
 *
 * Not independently patched, but captured anyway (same reasoning as Knex/
 * Prisma/Sequelize above — see suppressNestedRecording): Drizzle ORM, when
 * used via drizzle-orm/node-postgres, drizzle-orm/mysql2, or
 * drizzle-orm/better-sqlite3 — each of those drivers calls straight into
 * the already-patched pg/mysql2/better-sqlite3 methods under the hood.
 * Verified empirically, 2026-10-06. drizzle-orm/postgres-js (the `postgres`
 * package) is NOT yet covered — it has no shared prototype to patch (every
 * client is built from closures), so it would need a require-cache-level
 * patch instead of the prototype patches used everywhere else here.
 */
/** Wrap a sync/async/callback-style method to capture query details. Exported for direct unit testing. */
export declare function wrapMethod(obj: Record<string, unknown>, method: string, source: string, queryExtractor?: (args: unknown[]) => string): void;
export interface InstrumentResult {
    patched: string[];
    total: number;
}
/**
 * Auto-detect and patch all installed database libraries.
 * Called once when the middleware initializes.
 */
export declare function autoInstrument(includeOutbound?: boolean): InstrumentResult;
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