/**
 * PDA Derivation Utilities
 *
 * @module solana/pda
 */
import { PublicKey } from "@solana/web3.js";
/**
 * Derive vault authority PDA.
 * Seeds: ["vault", slab_key]
 */
export declare function deriveVaultAuthority(programId: PublicKey, slab: PublicKey): [PublicKey, number];
/**
 * Derive LP PDA for TradeCpi.
 * Seeds: ["lp", slab_key, lp_idx as u16 LE]
 */
export declare function deriveLpPda(programId: PublicKey, slab: PublicKey, lpIdx: number): [PublicKey, number];
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