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To create a boilerplate context provider in React 18, you can use the createContext
method from the React API and then use the Provider
component to provide the context to its children. Here's an example:
import React, { createContext, useContext } from 'react';
interface MyContextType {
// type your context values here
}
const MyContext = createContext<MyContextType>({} as MyContextType);
export const useMyContext = () => useContext(MyContext)
export function MyContextProvider(props: React.PropsWithChildren) {
const value = {
// Add your context values here
};
return (
<MyContext.Provider value={value}>
{props.children}
</MyContext.Provider>
);
}
To use this context provider, you can wrap your root component with the MyContextProvider
component:
import MyContextProvider from './MyContextProvider';
function App() {
return (
<MyContextProvider>
<div>
{/* Add your components here */}
</div>
</MyContextProvider>
);
}
This will make the MyContext
object available to all components within the App
component. To consume the context in a child component, you can use the useContext
hook from the React API:
import React, { useContext } from 'react';
import MyContext from './MyContext';
function MyChildComponent() {
const context = useContext(MyContext);
// Use the context values here
}
Keep in mind that the createContext
method takes an optional default value as its first argument. This default value will be used if a Provider
is not present for the context, so it's a good idea to specify a default value that makes sense for your context.
This usually looks like:
const MyContext = createContext({}); // notice the empty object
You can even take it a step further and instead of using const context = useContext()
inside your component, you can create a simple hook in your context file itself like so:
const useMyContext = () => useContext(MyContext)
Which will allow you to destructure your values: const {someValue} = useMyContext()