cannot import webclient as given in example

```js
import {WebClient} from "cBridge-typescript-client/ts-proto/sgn/gateway/v1/GatewayServiceClientPb";
```

this is giving import error:

```
import * as grpcWeb from 'grpc-web';
^^^^^^

SyntaxError: Cannot use import statement outside a module
```

How can I solve this error?

I am importing the code in a .ts file which is being run on ts-node
