viem
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TypeScript
import type { Address } from 'abitype';
import { type EstimateGasErrorType } from '../../actions/public/estimateGas.js';
import { type ReadContractErrorType } from '../../actions/public/readContract.js';
import type { Client } from '../../clients/createClient.js';
import type { Transport } from '../../clients/transports/createTransport.js';
import type { ErrorType } from '../../errors/utils.js';
import type { Account, GetAccountParameter } from '../../types/account.js';
import type { Chain, GetChainParameter } from '../../types/chain.js';
import type { TransactionRequestEIP1559 } from '../../types/transaction.js';
import type { RequestErrorType } from '../../utils/buildRequest.js';
import type { HexToNumberErrorType } from '../../utils/encoding/fromHex.js';
export type EstimateOperatorFeeParameters<TChain extends Chain | undefined = Chain | undefined, TAccount extends Account | undefined = Account | undefined, TChainOverride extends Chain | undefined = undefined> = Omit<TransactionRequestEIP1559, 'from'> & GetAccountParameter<TAccount> & GetChainParameter<TChain, TChainOverride> & {
/** L1 block attributes contract address. */
l1BlockAddress?: Address | undefined;
};
export type EstimateOperatorFeeReturnType = bigint;
export type EstimateOperatorFeeErrorType = RequestErrorType | EstimateGasErrorType | HexToNumberErrorType | ReadContractErrorType | ErrorType;
/**
* Estimates the operator fee required to execute an L2 transaction.
*
* Operator fees are part of the Isthmus upgrade and allow OP Stack operators
* to recover costs related to Alt-DA, ZK proving, or custom gas tokens.
* Returns 0 for pre-Isthmus chains or when operator fee functions don't exist.
*
* @param client - Client to use
* @param parameters - {@link EstimateOperatorFeeParameters}
* @returns The operator fee (in wei). {@link EstimateOperatorFeeReturnType}
*
* @example
* import { createPublicClient, http, parseEther } from 'viem'
* import { optimism } from 'viem/chains'
* import { estimateOperatorFee } from 'viem/chains/optimism'
*
* const client = createPublicClient({
* chain: optimism,
* transport: http(),
* })
* const operatorFee = await estimateOperatorFee(client, {
* account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
* to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
* value: parseEther('1'),
* })
*/
export declare function estimateOperatorFee<TChain extends Chain | undefined, TAccount extends Account | undefined, TChainOverride extends Chain | undefined = undefined>(client: Client<Transport, TChain, TAccount>, args: EstimateOperatorFeeParameters<TChain, TAccount, TChainOverride>): Promise<EstimateOperatorFeeReturnType>;
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