Infura / Alchemy switcher

[SvenMeyer]

I think we had that discussion before, but this is how my Infura / Alchemy API switcher looks like:

let rpcUrl_1: string;
let rpcUrl_2: string;
let apiKey: string;
if (process.env.ALCHEMY_API_KEY) {
  apiKey = process.env.ALCHEMY_API_KEY;
  rpcUrl_1 = "https://eth-";
  rpcUrl_2 = ".alchemyapi.io/v2/" + apiKey;
} else if (process.env.INFURA_API_KEY) {
  apiKey = process.env.INFURA_API_KEY;
  rpcUrl_1 = "https://";
  rpcUrl_2 = ".infura.io/v3/" + apiKey;
} else {
  console.log("Warning : No ALCHEMY_API_KEY or INFURA_API_KEY in .env set");
}

// https://hardhat.org/config/#networks-configuration

function getChainConfig(network: keyof typeof chainIds): NetworkUserConfig {
  const url: string = rpcUrl_1 + network + rpcUrl_2;
  return {
    accounts: {
      count: 10,
      initialIndex: 0,
      mnemonic,
      path: "m/44'/60'/0'/0",
    },
    chainId: chainIds[network],
    url,
    gas: "auto",
    timeout: 900000,
  };
}