import type { ExtendedViemClient } from '../../../client.js';
import type { Account, Address } from '../../../types.js';
import type { ChainFaucet as Chain } from '../index.js';
export type DripParams = {
    account: Address | Account;
    chain?: Chain;
    token?: Address | {
        address: Address;
    } | null;
};
/**
 * Request testnet tokens for an account on a supported blockchain.
 *
 * This function facilitates getting testnet tokens (native tokens, USDC, EURC) for testing purposes.
 * It automatically determines which tokens to request based on the specified token parameter or
 * defaults to requesting all available tokens for the chain.
 *
 * @param client - The client instance to use for the operation.
 * @param params - The parameters for the drip request
 * @param params.account - The account address or Account object to receive tokens
 * @param params.chain - Optional chain specification. Defaults to the client's chain
 * @param params.token - Optional token specification:
 *   - `null`: Request only native tokens
 *   - `Address`: Request specific token by address
 *   - `{ address: Address }`: Request specific token by address object
 *   - `undefined`: Request all available tokens (native, USDC, EURC)
 *
 * @returns Promise that resolves when the testnet token request is completed
 *
 * @throws {UnsupportedChainError} When the chain doesn't support faucet functionality
 *
 * @example
 * ```typescript
 * // Request all available testnet tokens
 * await drip(client, {
 *   account: '0x1234567890123456789012345678901234567890'
 * })
 *
 * // Request only native tokens
 * await drip(client, {
 *   account: '0x1234567890123456789012345678901234567890',
 *   token: null
 * })
 *
 * // Request specific token (USDC)
 * await drip(client, {
 *   account: '0x1234567890123456789012345678901234567890',
 *   token: client.chain.contracts.USDC
 * })
 * ```
 */
export declare function drip(client: ExtendedViemClient, params: DripParams): Promise<void>;