import type { Chain, GetChainContractAddressErrorType, ReadContractErrorType } from 'viem';
import type { RequireClientContracts } from '../../../clients/chain.js';
import { UnsupportedNameTypeError } from '../../../errors/general.js';
import type { ErrorType } from '../../../errors/utils.js';
export type GetAvailableParameters = {
    /**
     * Name to check availability for. Only `.eth` names are supported:
     * - `eth-2ld` names (e.g. `name.eth`)
     * - `eth-subname` names of any depth (e.g. `sub.name.eth`)
     *
     * DNS names are not supported (they have both on-chain and off-chain
     * import paths, so a single availability answer would be ambiguous).
     */
    name: string;
};
export type GetAvailableReturnType = boolean;
export type GetAvailableErrorType = UnsupportedNameTypeError | ReadContractErrorType | GetChainContractAddressErrorType | ErrorType;
/**
 * Gets the availability of a `.eth` name to register.
 *
 * For `eth-2ld` names, availability is read from the `.eth` registrar via
 * `isAvailable`, which accounts for grace periods and premium decay.
 *
 * For `eth-subname` names, the UniversalHelper's `findParentRegistry`
 * is used to traverse the registry tree and locate the parent registry, then
 * the leaf label's status is checked against it.
 *
 * @param client - {@link Client}
 * @param parameters - {@link GetAvailableParameters}
 * @returns Availability as boolean. {@link GetAvailableReturnType}
 *
 * @example
 * import { createPublicClient, http } from 'viem'
 * import { sepolia } from 'viem/chains'
 * import { addEnsContracts } from '@ensdomains/ensjs'
 * import { getAvailable } from '@ensdomains/ensjs/public'
 *
 * const client = createPublicClient({
 *   chain: addEnsContracts(sepolia),
 *   transport: http(),
 * })
 *
 * // eth-2ld via the .eth registrar
 * const a = await getAvailable(client, { name: 'ens.eth' })
 * // false
 *
 * // eth-subname with auto-traversal via the UniversalHelper
 * const b = await getAvailable(client, { name: 'sub.ens.eth' })
 */
export declare function getAvailable<chain extends Chain>(client: RequireClientContracts<chain, 'ensEthRegistrar' | 'ensUniversalHelper'>, { name }: GetAvailableParameters): Promise<GetAvailableReturnType>;
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