react-suspendable
v0.1.0
Published
Not really meant for anything serious yet, and may never be.
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Suspender
Not really meant for anything serious yet, and may never be.
This is a package that wraps async functions to be used with Suspense. You can see in the example folder how that looks.
Basic fetch
import { suspender } from 'react-suspender';
const getData = async type => {
if (type === 'success') {
let response = await fetch('https://test.com');
let json = await response.json();
return json;
}
};
const initialRequest = suspender(getData, 'success');
const App = () => {
let [user, setUser] = React.useState(initialRequest);
return (
<React.Suspense fallback={<div>sidebar loader...</div>}>
<SomeComponent user={user} />
</React.Suspense>
);
};
Error Handling
See examples/src/TestContent.tsx
. You can wrap your component in an error boundary, and then you will be able to render something if an async request throws a promise rejection
TypeScript example
type User = { name: string };
// initial request must be created outside the render, or else you will be in an infinite loop
const initialRequest = suspender < User > (getData, 'success');
const App = () => {
let [user, setUser] = React.useState(initialRequest);
return (
<React.Suspense fallback={<div>sidebar loader...</div>}>
<Sidebar user={user} />
</React.Suspense>
);
};
// Example using TS types with suspense
type SidebarProps = {
user: Suspender<User>,
};
const Sidebar = ({ user }: SidebarProps) => {
const { data } = user.read();
// data is correctly typed using the User type above
return null;
};