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import { createElement, Suspense, lazy, Component } from 'react';
const Loading = function() {
return <div>Loading...</div>;
};
const Error = function({ resetState }) {
return (
<div>
Error!
<a onClick={resetState} href="#">
Reset app
</a>
</div>
);
};
const pause = timeout =>
new Promise(d => setTimeout(d, timeout), console.log(timeout));
const DropZone = lazy(() =>
pause(Math.random() * 1000).then(() => import('./dropzone.js'))
);
const Editor = lazy(() =>
pause(Math.random() * 1000).then(() => import('./editor.js'))
);
const AddNewComponent = lazy(() =>
pause(Math.random() * 1000).then(() => import('./addnewcomponent.js'))
);
const GenerateComponents = lazy(() =>
pause(Math.random() * 1000).then(() => import('./component-container.js'))
);
export default class App extends Component {
state = { hasError: false };
static getDerivedStateFromError(error) {
// Update state so the next render will show the fallback UI.
console.warn(error);
return { hasError: true };
}
render() {
return this.state.hasError ? (
<Error resetState={() => this.setState({ hasError: false })} />
) : (
<Suspense fallback={<Loading />}>
<DropZone appearance={0} />
<Editor title="APP_TITLE">
<main>
<Suspense fallback={<Loading />}>
<GenerateComponents appearance={1} />
</Suspense>
<AddNewComponent appearance={2} />
</main>
<aside>
<section>
<Suspense fallback={<Loading />}>
<GenerateComponents appearance={3} />
</Suspense>
<AddNewComponent appearance={4} />
</section>
</aside>
</Editor>
<footer>Footer here</footer>
</Suspense>
);
}
}
|
