React Suspense Render Hook

React Suspense Render Hook: This hook allows you to declaratively define components that render when asynchronous data is processed.

Deprecated 🚀

This library has been updated to react-render-state-hook, allowing for more reliable use of almost all the features. Please check the link below for further information.

https://www.npmjs.com/package/react-render-state-hook

Installation

The easiest way to install react-suspense-render-hook is with npm.

npm install react-suspense-render-hook

Alternately, download the source.

git clone https://github.com/stegano/react-suspense-render-hook.git

Quick Start

useSuspenseRender

The useSuspenseRender hook enables a declarative approach to display components based on asynchronous data processing status. Handle components' rendering based on data processing status within a single component.

import { useState, useCallback } from "react";
import { useSuspenseRender } from "react-suspense-render-hook";

const App = () => {
  // Asynchronous task function
  const asyncTask = useCallback(
    () =>
      new Promise<string>((resolve) => {
        const randomString = Math.random().toString(32).slice(2);
        setTimeout(() => resolve(randomString), 1000 * 3);
      }),
    [],
  );

  // You can use the `runAsyncTask` function to process asynchronous data again at your desired point after the screen has been rendered.
  const [suspenseRender, runAsyncTask] = useSuspenseRender<string, Error>();

  useEffect(() => {
    // Run asynchronous task function
    runAsyncTask(async () => {
      return asyncTask();
    });
  }, [asyncTask]);

  const handleButtonClick = useCallback(() => {
    // Run the `asyncTask` function
    runAsyncTask(async () => {
      return asyncTask();
    }); // Alternatively, you can use `runAsyncTask(new Promise(...))`;
  }, [asyncTask, runAsyncTask]);

  // Use `suspenseRender` to define rendering for data processing statuses: success, loading, or error. It auto-renders based on the `asyncTask` function's status.
  return suspenseRender(
    (data) => (
      <div>
        <p>Success({data})</p>
        <button type="button" onClick={handleButtonClick}>
          Update
        </button>
      </div>
    ),
    <p>Loading..</p>,
    (error) => <p>Error, Oops something went wrong.. :(, ({error.message})</p>,
  );
};

Demo: https://stackblitz.com/edit/stackblitz-starters-pgefl6

SuspenseRenderProvider

The SuspenseRenderProvider allows for predefined loading or error components to be set externally.

import { useCallback, useEffect } from 'react';
import {
  SuspenseRenderProvider,
  useSuspenseRender,
} from 'react-suspense-render-hook';

const Component = () => {
  // Asynchronous task function
  const asyncTask = useCallback(
    () =>
      new Promise<any>((resolve) => {
        setTimeout(resolve, 1000 * 1);
      }),
    []
  );

  const [suspenseRender, runAsyncTask] = useSuspenseRender();

  useEffect(() => {
    runAsyncTask(async () => {
      await asyncTask();
    });
  }, []);

  // If not specified, components defined in `SuspenseRenderProvider` are used for `renderLoading` or `renderError`.
  return suspenseRender(<p>Success</p>);
};

export const App = ({ children }) => {
  return (
    <SuspenseRenderProvider
      renderLoading={<p>Loading..☀️</p>}
      renderError={<p>Error!</p>}
    >
      <Component />
    </SuspenseRenderProvider>
  );
};

Demo: https://stackblitz.com/edit/stackblitz-starters-bwapyp

🧐 Experimental features

taskRunnerInterceptors

taskRunnerInterceptors can intercept taskRunner execution, allowing you to transform it. It can be useful for adding logs for data processing or injecting dummy data for use in Storybook and testing environments.

import { useCallback, useEffect } from 'react';
import {
  SuspenseRenderProvider,
  useSuspenseRender,
} from 'react-suspense-render-hook';

const Component = () => {
  // Asynchronous task function
  const asyncTask = useCallback(async () => {
    // e.g., return (await axios.get('.../data.json')).data.greeting;
    return 'Hi';
  }, []);

  const [suspenseRender, runAsyncTask] = useSuspenseRender<string>();

  useEffect(() => {
    runAsyncTask(async () => {
      const greeting = await asyncTask();
      return greeting;
    }, 'greeting');
  }, []);

  return suspenseRender((greeting) => <p>{greeting}</p>);
};

export const App = ({ children }) => {
  return (
    <SuspenseRenderProvider
      renderLoading={<p>Loading..☀️</p>}
      renderError={<p>Error!</p>}
      experimentals={{
        taskRunnerInterceptors: [
          async (_prevInterceptorResult, asyncTaskFunction, taskId) => {
            if (taskId === 'greeting') {
              return 'Hello';
            }
            return await asyncTaskFunction();
          },
          async (prevInterceptorResult, asyncTaskFunction, taskId) => {
            if (taskId === 'greeting') {
              // When `renderSuccess` is executed, it displays the text `Hello 😀`.
              return `${prevInterceptorResult} 😀`;
            }
            return await asyncTaskFunction();
          },
        ],
      }}
    >
      <Component />
    </SuspenseRenderProvider>
  );
};

Demo: https://stackblitz.com/edit/stackblitz-starters-4qxzui

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