How to properly import a regular class into a React component?

Question

React

Hello. There is a Store class that needs to be imported into the App component, but crashes "Expected an assignment or function call and instead saw an expression no-unused-expressions". What am I doing wrong?
Store:

export default class Store {
  constructor(reducer) {
    this._reducer = reducer;
    this._state;
    this._callbabks = [];
  }

  dispatch(action) {
    this._state = this._reducer(this._state, action);
    this._callbabks.forEach(item => item());
  }

  get state() {
    return this._state;
  }

  subcribe(callback) {
    this._callbabks.push(callback);
    return callback;
  }

  unsubcribe(callback) {
    this._callbabks = this._callbabks.filter(item => item !== callback);
  }
};

App:

import React, { Component } from 'react';
import './App.css';
import Store from './redux/store'

class App extends Component {
  render() {
    return <h1>Test</h1>
  }
}

export default App;

Answer 1

no-unused-expressions linter error . Importing a module but not using it.
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