Typography: React to event types

What is the correct type for React events. Initially I just used any for the sake of simplicity. Now, I am trying to clean things up and avoid use of any completely.

So in a simple form like this:

export interface LoginProps {
  login: {
    [k: string]: string | Function
    uname: string
    passw: string
    logIn: Function
  }
}
@inject('login') @observer
export class Login extends Component<LoginProps, {}> {
  update = (e: React.SyntheticEvent<EventTarget>): void => {
    this.props.login[e.target.name] = e.target.value
  }
  submit = (e: any): void => {
    this.props.login.logIn()
    e.preventDefault()
  }
  render() {
    const { uname, passw } = this.props.login
    return (
      <div id='login' >
        <form>
          <input
            placeholder='Username'
            type="text"
            name='uname'
            value={uname}
            onChange={this.update}
          />
          <input
            placeholder='Password'
            type="password"
            name='passw'
            value={passw}
            onChange={this.update}
          />
          <button type="submit" onClick={this.submit} >
            Submit
          </button>
        </form>
      </div>
    )
  }
}

What type do I use here as event type?

React.SyntheticEvent<EventTarget> does not seem to be working as I get an error that name and value do not exist on target.

More generalised answer for all events would be really appreciated.

Thanks

---

The SyntheticEvent interface is generic:

interface SyntheticEvent<T> {
    ...
    currentTarget: EventTarget & T;
    ...
}

And the currentTarget is an intersection of the generic constraint and EventTarget.
Also, since your events are caused by an input element you should use the FormEvent (in definition file, the react docs).

Should be:

update = (e: React.FormEvent<HTMLInputElement>): void => {
    this.props.login[e.currentTarget.name] = e.currentTarget.value
}