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Pass react-redux store and dispatch functions via props?

The following React component is given:
import React, { useEffect, useState } from "react";
import { useDispatch, useSelector } from "react-redux";
import { store, StoreState } from "../../redux/actions";
import { setBackgroundAction } from "../../redux/title.actions";
import "./Loader.scss";
interface ReduxProps {
bgClass: string;
}
interface Props extends ReduxProps {
bgChange?: boolean;
}
export default function Loader(props: Props) {
const [bgClassOld, setBgClassOld] = useState<string>("");
const dispatch = useDispatch();
useEffect(() => {
const { bgChange, bgClass } = props;
if (bgChange) {
setBgClassOld(bgClass);
dispatch(setBackgroundAction("bg-white"));
dispatch(setBackgroundAction(bgClassOld));
}
});
return (
<div className="d-flex">
<div className="loader">
<img src="/loadscreen.gif" />
</div>
</div>
);
}
// function mapping(state: StoreState): ReduxProps {
// return {
// bgClass: state.title.backgroundClass,
// };
// }
This is more a theoretical question to see how to actually do the following change:
The component Loader will be imported from another npm package (shared components).
My problem is that I have a redux state in the current implementation included (changed it from Class to Functional component, so thats mapping() is still in there).
As I only import the component in my "main" client, I will not have the whole redux setup in place. So I think I need to pass the store and the dispatch functions via props.
So should I create a prop store for my component, where I pass the redux store when I import the shared component?
Do I also create two props for each dispatch functions?
Does is make sense or would there be a better approach?

You generally shouldn't import the Redux store directly into components. The hooks allow your component to access whatever Redux store has been injected into the component tree by a <Provider>.
You also don't need to pass dispatch as a prop. Any component can call useDispatch(), and dispatch actions to whatever Redux store is actually being used.
If I understand your question, you're planning on importing this component into an existing app, and it sounds like that app is already configured to use (React-)Redux with a <Provider> at the top. If that's the case, then you don't have to do anything else special to make this work. Just call the React-Redux hooks in any of your components.

React Hooks Equivalent of Flux Container

Refactoring a React class component previously using Flux to use React Hooks instead.
Previous component utilized getStores() and calculateState() in order to subscribe to store objects and update local state.
Is there a way to refactor the class component to a functional React component using React Hooks (useState, useEffect, etc?) to achieve the same subscription to store objects?
flux component example:
class exampleComponent extends React.Component {
static getStores() {
return [storeOne];
}
static calculateState() {
const someData = storeOne.getState();
return {
someData
};
}
}
goal(something like this that subscribes to the store):
function exampleComponent(props) {
const [storeData] = useState(storeOne.getState());
return (
<someElement
data={storeData}
>
</someElement>
);
}
Note: tried using useState as above but it does not subscribe to storeOne, so the component does not re-render when storeOne state changes. I'd like to be able to somehow subscribe to changes in storeOne so that the component will re-render when there are changes to storeOne.

ReactWrapper::setProps() error when attempting to set Redux props in component for Jest/Enzyme test

I'm writing a unit test for a React component that is connected to Redux. One of the functions is the component is that it displays data if questionReducer.showquestions == true. I have attempted to re-create this functionality in the component by setting props with wrapper.setProps({ questionReducer: { showquestions: true } }). However, when I attempt this approach, I get the error:
ReactWrapper::setProps() expects a function as its second argument
How can I properly set the props for the connected Reducer in the component I am testing?

You should test the component alone, without being connected to Redux. That allows you to give props directly to component.
Example:
export class Component_ extends React.Component {
// your component logic here
}
const mapStateToProps = {
showQuestions: questionReducer.showquestions
}
const Component = connect(mapStateToProps)(Component_)
export default Component
And then in test you can just do this
const wrapper = shallow(<Component_ showQuestions={true} />

How to connect the Redux's store and actions to React's components

I have some experience with ReactJS but now I am trying to start using Redux and I have encoutered several problems. I already know how to create actions, consts, reducers, how to connect them to one single store, but I don't actually now how to use it with React. For example I have a form to gather user's data and I want it all passed to Redux store. So I guess the main question would be how do I trigger the action in ReactJS?

when using react-redux, you'll get a component enhancer called connect.
class Component extends React.Component {
render() {
return (
<button onClick={this.props.onClickButton}>
{this.props.a}
</button>
)
}
}
export default connect(function mapStateToProps(state) {
return { a: state.store.a }
}, { onClickButton: incrementAction })(Component)
What I'm doing here is taking a global store value (state.store.a - state is the global store, .store is the store from a combined store, and a is the value), and telling the React component to listen for changes on this variable (transparently through connect).
Additionally, I'm wrapping an action creator incrementAction (and renaming it to onClickButton). If you're using a middleware like redux-thunk, this will automatically pass in store.dispatch as an arg. Otherwise, this is a standard action creator.
both of these will be available inside the component as props (the args are descriptively named mapStateToProps and mapDispatchToProps)

You'll want to use react-redux. For example, here's a small counter:
import { connect } from "react-redux";
import { increment } from "actions";
import PropTypes from "prop-types";
import React from "react";
function counter ({ count, increment }) {
return <button onClick={increment}>
{count}
</button>;
}
counter.propTypes = {
count: PropTypes.number.isRequired,
increment: PropTypes.func.isRequired
};
export default connect(
(state) => ({
count: state.data.count
}),
{ increment }
)(counter);
The (state) => ({ }) bit passes a property called count to the component's props. The { increment } passes your increment function in the props.
Be sure to include the { increment } part in the connect; if you don't, your redux action won't be dispatched.

To bind redux to react there is a package called react-redux. The description of which is official react bindings for redux.
You can connect the actions to react by using mapDispatchToProps, which will map your actions as props. Then you can call those actions as props. When you call those actions as props, the actions will be triggered and redux state will change.
To access the state you have to use mapStateToProps, which will give you the state as props.
You can use connect method to connect mapStateToProps and mapDispatchToProps to react.
I think it would be easier if you do a tutorial. This is a tutorial by Dan Abramov, creator of Redux.

Using mobx store only outside of the react components render function

I have a react component that wraps a class that renders WebGL using three.js with the DOM and connects mobx store value and it changes with the class lifecycle methods.
The passed in mobx store is only used outside of the components render function in lifecycle functions (componentDidMount, componentDidUpdate, ..). Noticed that when the store changes, the component doesn't trigger a rerender. But I make a useless read within the render functions, such as in the example below passing a triggerRerenderListenerProp={this.props.store.debugSettings.showStats} prop to the div, the component becomes active only to store.debugSettings.showStats changes.
Is there a way of making the component listen to store changes wihtout using the store itself in the render function?
import React, {Component} from 'react';
import PropTypes from 'prop-types';
import {observer} from 'mobx-react';
import MapPreview from 'classes/MapPreview';
import style from './Preview.css';
class Preview extends Component {
static propTypes = {
store: PropTypes.object.isRequired,
imageUrl: PropTypes.string.isRequired
};
constructor (props) {
super(props);
this.containerEl = null;
}
componentDidMount () {
const options = {
debugSettings: this.props.store.debugSettings,
previewSettings: this.props.store.previewSettings
};
this.preview = new MapPreview(this.containerEl, options);
this.preview.setImage(imageUrl);
}
componentDidUpdate () {
this.preview.updateOptions({
debugSettings: this.props.store.debugSettings,
previewSettings: this.props.store.previewSettings
});
}
render () {
return (
<div
className={style.normal}
ref={(el) => { this.containerEl = el; }}
triggerRerenderListenerProp={this.props.store.debugSettings.showStats}
/>
);
}
}
export default observer(Preview);

The problem ultimately has two issues:
One, React is designed to only re-render when state or prop data changes.
Two, with mobx-react, I'm pretty sure the whole point is that the component won't re-render unless you dereference an observable value.
So while your props are technically changing, React doesn't do a deep object comparison of the props.
What you might try is setting options as internal component state -- that might force a re-render even though nothing in the render method would have changed.
The caveat here is that the updated props (from your store) might be too deeply nested as to force React to re-render even while updating internal state. You might also need to piggy-back on shouldComponentUpdate();