@nomiclabs/hardhat-etherscan/src/type-extensions.ts

Hardhat plugin for verifying contracts on etherscan

import "hardhat/types/config";

import { EtherscanConfig, EtherscanUserConfig } from "./types";

declare module "hardhat/types/config" {
  interface HardhatUserConfig {
    etherscan?: EtherscanUserConfig;
  }

  interface HardhatConfig {
    etherscan: EtherscanConfig;
  }
}