Import React is not functioning

Asked
Active3 hr before
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7 Answers

react
90%

Because there isn't an export named React in the react package. There is only a single default export. If you do this, you'll find that React is undefined.,The difference is between default exports & named exports.,The second one works because it's the default export from the React package. You can actually name it anything because there is only a single default export per module.

class React {
   render() {
      // some code...
   }
}

export default React;

You can import the above file react.js in your project like

import React from "./react.js";
export class React {
   render() {
      // some code...
   }
}

export const Component = () => {
   // some code...
};

Then you have to import the above file react.js in your project like

import {
   React,
   Component
} from "./react.js";
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88%

When using an import style like import React from "react", then JSX cannot be parsed. import * as React from "react" works though., Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. ,Successfully merging a pull request may close this issue.

Pretag
 Pretag team - issue, fix, solve, resolve
72%

Import it: import PropTypes from 'prop-types', Import it: import PropTypes from 'prop-types' ,This problem is also common in accessing component props:

class greeting extends React.Component {
   // ...
}
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65%

This upgrade will not change the JSX syntax and is not required. The old JSX transform will keep working as usual, and there are no plans to remove the support for it.,If you want to upgrade, you will need two things:,Remove all unused React imports as a result of upgrading to the new JSX transform.

import React from 'react';

function App() {
  return <h1>Hello World</h1>;
}
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75%

If you use React, import React from 'react' is the first thing that you write in your code but if you have created a new react app using creat-react-app recently, you might have noticed that there is no import React statement at the top and your code works just fine. So, How's that working?,I use create react app with eslint and sadly I still get that error because of eslint.,This new JSX transform is also supported in older versions of React so you can start using them even if you don't use React 17.

Pretag
 Pretag team - issue, fix, solve, resolve
40%

Not saving the file in the source folder,CSS files are the core components of a frontend developer project. They are used to style and design webpages. CSS is used internally in HTML files using the style tag and externally by importing it into the required HTML file. ,In this guide, you will learn about the errors that can occur while importing a CSS file into your React file.

1
import React, {
   Component
} from 'react';
2
import ReactDOM from 'react-dom';
3
import '../CSS_Files/style.css';
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22%

The error “Component is not defined” is triggered when you use the Component class in React without actually importing it. For example:,Inside the code above, the class Hello extends React’s Component class, but you haven’t imported any Component class at all. There are two ways to fix this.if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-sebhastian_com-medrectangle-4-0')};,Understanding React's preventdefault()

import React from "react";

class Hello extends Component {
  render(){
    return <h1> Hello World~ </h1>
  }
}

export default Hello;
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