React Error: Type 'void' is not assignable to type 'Readonly<{}>' in React.Component

Question

Why would this throw the error below?

export default class DeleteModal extends React.Component<DeleteModalProps, void>

Error:

Type 'void' is not assignable to type 'Readonly<{}>'

keikai · Accepted Answer · 2021-12-14 12:16:40Z

3

If we don't need state in the component, don't assign it would be fine.

React.Component<Props>

You can also set the empty object

interface State {}

React.Component<Props, State>

interface Component<P = {}, S = {}, SS = any> extends ComponentLifecycle<P, S, SS> { }

You can see that it's been defined as empty Object {}

Declaring variables of type void is not useful because you can only assign null or undefined to them

That's the reason for that error.

answered Apr 11, 2020 at 18:01

keikai

15.3k10 gold badges56 silver badges73 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1