/**
 * Transaction Simulation Utilities
 *
 * Provides compute unit estimation via transaction simulation.
 * Industry best practice: simulate first, then add 10% buffer.
 */
import { Connection, Transaction, VersionedTransaction } from "@solana/web3.js";
export interface SimulationResult {
    computeUnits: number;
    error?: string;
}
/**
 * Simulate transaction to estimate compute units
 * Returns actual units + 10% buffer (industry standard)
 *
 * @param connection - Solana connection
 * @param transaction - Transaction to simulate
 * @param fallbackUnits - Fallback value if simulation fails (default: 200,000)
 * @returns Estimated compute units with 10% buffer
 *
 * @example
 * ```typescript
 * const tx = new VersionedTransaction(...);
 * const estimatedCU = await simulateComputeUnits(connection, tx);
 * // Use estimatedCU to set compute unit limit
 * ```
 */
export declare function simulateComputeUnits(connection: Connection, transaction: Transaction | VersionedTransaction, fallbackUnits?: number): Promise<number>;
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