import type { NetworkClientId } from '@metamask/network-controller';
import type { Hex } from '@metamask/utils';
import type { TransactionMeta } from '../index.js';
import type { TransactionControllerMessenger } from '../TransactionController.js';
/**
 * Get the native balance for an address.
 *
 * @param address - Address to get the balance for.
 * @param messenger - The TransactionController messenger.
 * @param networkClientId - The network client ID.
 * @returns Balance in both human-readable and raw format.
 */
export declare function getNativeBalance(address: Hex, messenger: TransactionControllerMessenger, networkClientId: NetworkClientId): Promise<{
    balanceHuman: string;
    balanceRaw: string;
}>;
/**
 * Determine if the native balance is sufficient to cover max gas cost.
 *
 * @param transaction - Transaction metadata.
 * @param messenger - The TransactionController messenger.
 * @param networkClientId - The network client ID.
 * @returns True if the native balance is sufficient, false otherwise.
 */
export declare function isNativeBalanceSufficientForGas(transaction: TransactionMeta, messenger: TransactionControllerMessenger, networkClientId: NetworkClientId): Promise<boolean>;
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