export declare function assertDirChildren(dir: string, scriptNames: string[]): string[];
export declare function assertDirectDirChildren(dir: string, scriptNames: string[]): string[];
/**
 * Description: this function reads raw signed txn from file /assets/<filename>.tx
 * and returns the encoded txn as Uint8array
 * @param filename : filename [must have .tx ext]
 * @returns signed transaction encoded as Uint8array
 */
export declare function loadSignedTxnFromFile(filename: string): Uint8Array | undefined;