属性 '' 不存在于类型 '' - 尽管有接口

Question

I am trying to create a class component. I made an interface for the class, but am getting the error Property '' does not exist on type '' on my scrollDiv property. What was missed in the composition of this class?

 interface ChatTabI {
  state: any;
  scrollDiv: any;
  history: any;
  user: any;
}
class ChatTab extends React.Component<ChatTabI> {
// @ts-ignore

constructor(props) {
    super(props);

    this.state = {
        text: "",
        messages: [],
        loading: false,
        channel: null,
    };

    this.scrollDiv = React.createRef();

 }
...
}

Answer 1

this.scrollDiv You are accessing the class property with this line.

So you would need to do something like this.

 interface ChatTabI {
  state: any;
  scrollDiv: any;
  history: any;
  user: any;
}
class ChatTab extends React.Component<ChatTabI> {

  scrollDiv: any; // or whatever this type would be

  constructor(props) {
    super(props);

    this.state = {
        text: "",
        messages: [],
        loading: false,
        channel: null,
    };

    this.scrollDiv = React.createRef();

 }
...
}