react-flowstate

useState and useEffect, they're so lame
They're making me mad, I'm gonna change the game
react-flowstate, the library that's gonna make you feel sane
So say goodbye to those two, and let's get this party started!
This is from Google Bard. Don't like it? Send your PR!

Examples

Features

• Dead simple to use.
• Automatically manages data lifecycle and display condition.
• Reloads data on dependency change with debounce support.
• Supports React Native and TypeScript.

Install

npm install react-flowstate

Quickstart

1import {DataLayout} from 'react-flowstate';
2
3function App() {
4  return (
5    <DataLayout
6      dataSource={() => fetchData()}
7      loadingIndicator={() => (
8        <div>Loading ...</div>
9      )}
10      errorFallback={(err) => (
11        <div>{err.message}</div>
12      )}
13    >
14      {({data}) => (
15        <div>Your data is here: {data}</div>
16      )}
17    </DataLayout>
18  );
19}

API Reference

<DataLayout />

Component that helps you with controlling data fetching and display.

Props

initialData?: Data

• Supply this value will set initial data and skip initial loading.

children?: ReactNode | (props: DataLayoutProps) => ReactNode

• If dataFallback prop is not supplied, children will act as DataFallback
• If dataFallback prop is supplied, children will act as a dynamic view that allows us to dynamically render whatever we want.

dataSource: (deps?: DependencyList) => Promise

• Query function that fetches data and return a Promise.
• It is passed an optional dependency list that triggers reload behavior.

dependencies?: DependencyList

• If present, data will be reloaded if the values in the list change.

debounceDelay?: number;

• The number of milliseconds to delay invoking dataSource reload behavior.
• If not present, any changes to dependendcies prop will trigger reload behavior and may affect the performance.

loadingIndicator?: RenderFunction | React.ReactNode

• Render loading UI

shadowReload?: boolean

• Default: false

• If shadowReload is true, the reload behavior will keep current displayed data UI as-is and not showing loading indicator. However, if there is no existing data being display, loading indicator is still shown.

preserveDataOnError?: boolean

• Default: false
• If preserveDataOnError is false and query function failed to fetch new data, current existing data will be set to be null and errorFallback will be displayed.
• Set preserveDataOnError to be true preserve existing data even if the query failed. Can be use together with onError prop to show the error message to user (e.g: using toarst or alert()).

onError?: (err: Error, state: DataLayoutState) => unknown

• Callback function invoked when dataSource fails to fetch data.

errorFallback?: ((err: Error, state: DataLayoutProps) => React.ReactNode) | React.ReactNode

• Render error UI

dataFallback?: DataFallbackRenderFunction | React.ReactNode

• Render data UI