/**
 * Get codeHash for a contract deployment.
 * @param artifacts - hardhat artifacts (hre.artifacts)
 * @param contractName - contract name (e.g. "Gateway", "AuthorityManager")
 * @param args - constructor arguments array
 */
export declare function getCodeHash(artifacts: any, contractName: string, args?: any[]): Promise<string>;
/**
 * Get codeHash for an ERC1967Proxy deployment.
 * @param artifacts - hardhat artifacts (hre.artifacts)
 * @param implAddress - implementation address
 * @param implName - implementation contract name (for encoding initData)
 * @param initArgs - arguments for initialize() function
 */
export declare function getProxyCodeHash(artifacts: any, implAddress: string, implName: string, initArgs?: any[]): Promise<string>;
/**
 * Get codeHash for a custom proxy deployment.
 * @param artifacts - hardhat artifacts (hre.artifacts)
 * @param proxyName - proxy contract name (e.g. "MyCustomProxy")
 * @param implAddress - implementation address
 * @param implName - implementation contract name (for encoding initData)
 * @param initArgs - arguments for initialize() function
 */
export declare function getCustomProxyCodeHash(artifacts: any, proxyName: string, implAddress: string, implName: string, initArgs?: any[]): Promise<string>;