Compose multiple React providers
Written byPhuoc Nguyen
Created
13 May, 2021
Category
Tip
Tags
React
Nowadays, it is common to use React's context at the root of an application to manage a shared state between any components.
For example, checking whether or not the current user has logged in might be accomplished by the
`AuthProvider` provider:js
const App = () => {
return (
<AuthProvider>
{...}
</AuthProvider>
);
};Using multiple providers could make the code harder to read because there are a lot of nested components:
js
const App = () => {
return (
<Router>
<AuthProvider>
<ThemeProvider>
<LocalizationProvider>
{...}
</LocalizationProvider>
</ThemeProvider>
</AuthProvider>
</Router>
);
};The providers can be composed together by using the
`reduce` function:js
const compose = (providers) =>
providers.reduce((Prev, Curr) => ({ children }) => (
<Prev>
<Curr>{children}</Curr>
</Prev>
));The provider declarations in the root can be shorten as below:
js
const Provider = compose([
Router,
AuthProvider,
ThemeProvider,
LocalizationProvider,
]);
const App = () => {
return (
<Provider>
{...}
</Provider>
);
};
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Phước Nguyễn