README

react-router-loading

Custom react router switch that allows you to load data before switching the screen

Requirements

"react": "^16.8.0 || ^17.0.0",
"react-dom": "^16.8.0 || ^17.0.0",
"react-router-dom": "^5.0.0"

This package uses react-router-dom as main router so you should implement it in your project first.

Installation

npm install react-router-loading
## or
yarn add react-router-loading

Usage

In your router section import Switch and Route from react-router-loading instead of react-router-dom

import { Switch, Route } from "react-router-loading";

<Switch>
    <Route path="/page1" component={Page1} />
    <Route path="/page2" component={Page2} />
    ...
</Switch>

Add loading prop to every route that must be loaded before switching

<Switch>
    // data will be loaded before switching
    <Route path="/page1" component={Page1} loading />

    // instant switch as before
    <Route path="/page2" component={Page2} />
    ...
</Switch>

Add loadingContext.done() at the end of your initial loading method in components that mentioned in routes with loading prop (in this case it's Page1)

import { LoadingContext } from "react-router-loading";
const loadingContext = useContext(LoadingContext);

const loading = async () => {
    // loading some data

    // call method to indicate that loading is done and we are ready to switch
    loadingContext.done();
};

or for class components

import { LoadingContext } from "react-router-loading";

class ClassComponent extends React.Component {
    ...
    loading = async () => {
        // loading some data

        // call method from props to indicate that loading is done
        this.props.loadingContext.done();
    };
    ...
};

// we should wrap class component with Context Provider to get access to loading methods
const ClassComponentWrapper = (props) =>
    <LoadingContext.Consumer>
        {loadingContext => <ClassComponent loadingContext={loadingContext} {...props} />}
    </LoadingContext.Consumer>

Config

You can specify loading screen that would be shown at the first loading of your app

const MyLoadingScreen = () => <div>Loading...</div>

<Switch loadingScreen={MyLoadingScreen}>
...
</Switch>

Use maxLoadingTime property if you want to limit loading time. Pages will switch if loading takes more time than specified in this property (ms).

<Switch maxLoadingTime={500}>
...
</Switch>

If you want to change LoadingContext globally you can pass isLoading property to the Switch. This way you don't need to add extra loadingContext.done(); in your page components after fetching is done.

import { useIsFetching } from 'react-query';
const isFetching = useIsFetching();

<Switch isLoading={isFetching}>
...
</Switch>

Call topbar.config() if you want to change topbar configuration. More info here.

import { topbar } from "react-router-loading";

topbar.config({
    autoRun: false,
    barThickness: 5,
    barColors: {
        0: 'rgba(26,  188, 156, .7)',
        .3: 'rgba(41,  128, 185, .7)',
        1.0: 'rgba(231, 76,  60,  .7)'
    },
    shadowBlur: 5,
    shadowColor: 'red',
    className: 'topbar'
});

How to run example on localhost

Clone repository and run

yarn build && yarn start

License

MIT

Usage no npm install needed!