import type { NextTransactionStateError } from '../common/produceNextStateForTransaction';
import type { Transaction } from 'rango-sdk';
import type { StellarTransaction } from 'rango-types';
import type { Result } from 'ts-results';
export declare function extractFromSymbolAddress(symbolAddress: string): [string, string | undefined];
export declare function ensureStellarTransactionIsValid(tx: Transaction | null): Promise<Result<StellarTransaction, NextTransactionStateError>>;
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