hardhat/src/internal/builtin-plugins/network-manager/hook-handlers/hre.ts

Hardhat is an extensible developer tool that helps smart contract developers increase productivity by reliably bringing together the tools they want.

import type { HardhatRuntimeEnvironmentHooks } from "../../../../types/hooks.js";
import type { NetworkManager } from "../../../../types/network.js";

import { DEFAULT_NETWORK_NAME } from "../../../constants.js";

export default async (): Promise<Partial<HardhatRuntimeEnvironmentHooks>> => ({
  created: async (context, hre) => {
    let networkManager: NetworkManager | undefined;

    const userConfigNetworks = hre.userConfig.networks;

    hre.network = {
      async connect(networkConnectionParams) {
        const { NetworkManagerImplementation } = await import(
          "../network-manager.js"
        );

        if (networkManager === undefined) {
          networkManager = new NetworkManagerImplementation(
            hre.globalOptions.network !== undefined
              ? hre.globalOptions.network
              : DEFAULT_NETWORK_NAME,
            hre.config.defaultChainType,
            hre.config.networks,
            context.hooks,
            context.artifacts,
            userConfigNetworks,
            hre.config.chainDescriptors,
          );
        }

        return networkManager.connect(networkConnectionParams);
      },
    };
  },
});