To change the dispatch function when using useContext and useReducer in Typescript, you can create a separate context that contains a different dispatch function.
First, create a new context file, for example, "MyDispatchContext.tsx", and define the dispatch function in it.
import React from "react";
type Dispatch = (action: Action) => void;
type Action = { type: string; payload?: any };
export const MyDispatchContext = React.createContext<Dispatch>(() => {});
export const myDispatchFunction = (action: Action) => {
// your dispatch function logic here
};
Next, wrap your application with this new context, and pass the dispatch function as a prop to the context provider.
import { MyDispatchContext, myDispatchFunction } from "./MyDispatchContext";
function App() {
return (
<MyDispatchContext.Provider value={myDispatchFunction}>
<MyComponent />
</MyDispatchContext.Provider>
);
}
Finally, in the component where you want to use the new dispatch function, replace the useContext hook with the new context.
import { MyDispatchContext } from "./MyDispatchContext";
function MyComponent() {
const dispatch = useContext(MyDispatchContext);
const handleButtonClick = () => {
dispatch({ type: "MY_ACTION" });
};
return <button onClick={handleButtonClick}>Click me</button>;
}
Now, when the button in MyComponent is clicked, the dispatch function called will be the one provided by the MyDispatchContext, which can be a different dispatch function than the one used in the rest of the application.
Asked: 2023-03-31 11:00:00 +0000
Seen: 9 times
Last updated: Feb 20 '22