Index.d.ts has a lack of return-type annotation

[eakarpov]

Steps to reproduce

• Install feathers client via npm i --save feathers-client
• write a connection script via the guide

1. Then

import * as io from 'socket.io-client';
import * as hooks from 'feathers-hooks';
import socketio from '@feathersjs/socketio-client';
// I tried to use "import * as socketio" too
import * as authentication from 'feathers-authentication-client';
import { Connection } from './lib/config/connection';
import * as feathers from 'feathers-client';

const socket: SocketIOClient.Socket = io(`${Connection.Protocol}://${Connection.Host}:${Connection.Port}`);
const client: FeathersApp = feathers(); // FeathersApp is not exported

client.configure(hooks());
client.configure(socketio(socket));
client.configure(authentication({
  storage: window.localStorage,
}));

export default client;

Function call socketio(socket) throws error:
"Cannot invoke an expression whose type lacks a call signature. Type 'typeof '@feathersjs/socketio-client'' has no compatible call signatures."

Package @feathersjs/socketio-client has also no declaration file in itself. I had to copy it from the feathers-typescript in my local index.d.ts

• Tell us what broke. The more detailed the better.

Expected behavior

I should be able to use types from the library and should not have "any" types in function parameters and outputs.

Actual behavior

Many of lib functions use "any" type for parameters and outputs and the lib does not export types, only a value.

System configuration

Module versions (especially the part that's not working):
2.4.0
NodeJS version:
8.9.4
Operating System:
Ubuntu 16.04.3
Browser Version:
Mozilla Firefox 57.0.4
Module Loader:
"awesome-typescript-loader": "^3.4.1"

[daffl]

There is no index.d.ts in the current version (3.1.2) of this repository. Latest TypeScript definitions (where this issue is probably fixed) are currently under review at DefinitelyType (see https://github.com/feathersjs-ecosystem/feathers-typescript/issues/7).