How to solve adding metamask adapter

[shunsuke-h-opn]

Hi.
I would like to add metamask adapter.
But facing a problem now.
Could someone suggest some solutions?

const web3auth = new Web3Auth({
          clientId, 
          web3AuthNetwork: "development", // mainnet, aqua, celeste, cyan or testnet
          chainConfig: {
            chainNamespace: CHAIN_NAMESPACES.EIP155,
            chainId: "0x1",
            rpcTarget: "https://rpc.ankr.com/eth", // This is the public RPC we have added, please pass on your own endpoint while creating an app
          },
        })

        const metamaskAdapter = new MetamaskAdapter({
          clientId,
          sessionTime: 3600, // 1 hour in seconds
          chainConfig: {
            chainNamespace: CHAIN_NAMESPACES.EIP155,
            chainId: "0x1",
            rpcTarget: "https://rpc.ankr.com/eth", // This is the public RPC we have added, please pass on your own endpoint while creating an app
          },
        });
        web3auth.configureAdapter(metamaskAdapter);

[shunsuke-h-opn]

EventEmitterOptions is not defined well at web3auth?