import type { Account, Address, BaseUnits, ChainContract, ControlFlowOptions, NativeUnits } from '../../../types.js';
import type { Chain } from '../index.js';
import type { FeeValuesEIP1559, Client } from 'viem';
/**
 * Parameters for the {@link bridge} function.
 */
export type BridgeParams = {
    /** The sender's address or account */
    from: Address | Account;
    /** The recipient's address or account. */
    to: Address | Account;
    /** The amount to be transferred */
    amount: BaseUnits | NativeUnits;
    /** The address of the token. Must be on the same chain as `from`. */
    token: Address | ChainContract;
    /** The gas limit for the transaction. */
    gas?: bigint;
    /** The fee values for the transaction. */
    fees?: FeeValuesEIP1559;
    /** The blockchain network on which the transaction will be executed. */
    chain?: Chain;
};
/**
 * Transfers tokens via CCTP.
 *
 * @param client - The client instance to use for the operation.
 * @returns Returns the attestation of the transaction hash.
 *
 * @example
 * Transfer tokens from one account to another using CCTP.
 * ```typescript
 * const [ account_1 ] = await client.getAccounts({ address: '0x123', chain: ETH_SEPOLIA })
 * const [ account_2 ] = await client.getAccounts({ address: '0x321', chain: MATIC_AMOY })
 *
 * await client.bridge({
 *   from: account_1,
 *   to: account_2,
 *   amount: 1n,
 *   token: ETH_SEPOLIA.contracts.USDC,
 * })
 * ```
 */
export declare function bridge(client: Client, params: BridgeParams & ControlFlowOptions & {
    /** Includes the approve() step in the transaction. */
    withApprove?: boolean;
}): Promise<`0x${string}`>;