I built an application using jhipster v5.3.4 choosing React option for frontend. It works fine with Edge and Chrome but renders a blank page on Internet Explorer 11.
I've read the solution is install and include babel-polyfill but I´m not sure how to do this.
What I've done:
npm install --save-dev babel-polyfill
At the top of index.tsx, add import babelPolyfill from 'babel-polyfill';
The result is the same, blank page and console error: "Symbol is undefined"
Finally the answer to make it works is:
import React from 'react';
import ReactDOM from 'react-dom';
import 'babel-polyfill';
Related
My MERN application is returning the error Module not found: Can't resolve 'react-bootstrap/Media'.
I am importing several react-bootstrap modules as shown:
import Image from "react-bootstrap/Image"
import Col from "react-bootstrap/Col"
import Media from "react-bootstrap/Media"
import Row from "react-bootstrap/Row"
import Button from "react-bootstrap/Button"
The remainder are working as expected. Any ideas why this one import wouldn't be found?
Thanks!
Check your node_modules and see if it's there
I was also having this issue. I had to downgrade my version of react-bootstrap to import the Media component.
npm install react-bootstrap#1.6.1
Looks like Media is changed to Card component in newer versions of react-bootstrap. https://react-bootstrap.github.io/components/cards/
You should use:
import Card from "react-bootstrap/Card"
I am new to React but have used React Native pretty extensively.
Basically I'm struggling with something that I expect is pretty simple and common.
I want to use an NPM package bootstrap-grid-only-css (https://www.npmjs.com/package/bootstrap-grid-only-css).
I have installed it and its available in the node_modules folder. My issue is trying to import it into the app.js file.
I have tried
import { 'bootstrap-grid-only-css' } from "bootstrap-grid-only-css"
and
import { 'bootstrap-grid.min.css' } from "../node_modules/dist/bootstrap-grid-only-css"
Have also tried
const bs = require('bootstrap-grid.min.css');
none of which seem to work. all error.
Can anyone advise the correct method of import please?
Thanks very much.
If you are importing css file, then do not include file name after import
import "../node_modules/dist/bootstrap-grid-only-css"/bootstrap-grid.min.css
Just like:
import 'react-tabs/style/react-tabs.css';
Its quite simple to add bootstrap to your react application. you can follow below steps according to React Docs Adding Bootstrap
As first step you need to add bootstrap to your project via npm install.
npm install --save bootstrap
you can add bootstrap version behalf of bootstrap in above code.
Then go to src/index.js file and import Bootstrap CSS and optionally Bootstrap theme CSS in the beginning adding below line in index.js
import 'bootstrap/dist/css/bootstrap.css';
Then delete all custom css write inside the scr/App.css
Then checkout adding bootstrap code inside the App.js file.It should be worked properly.
If you want go through this video How to import bootstrap in react application you will understand how does it easy.
I have created a new reactjs project using create-react-app and am finding it's not working on IE10 & IE9. I have done a lot of research and it led me to using polyfills, which I have done with many of my other Rails on React app, but I'm finding it not working with this project created via create-react-app.
Here's the error:
SCRIPT5009: 'Map' is undefined
I notice this error is related to ES6's new Map() function.
So, here's what I've done in my code in an attempt to make it work:
import './polyfill';
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import { BrowserRouter } from 'react-router-dom';
import 'bootstrap/dist/css/bootstrap.min.css';
const app = (
<BrowserRouter basename={process.env.PUBLIC_URL}>
<App />
</BrowserRouter>
);
ReactDOM.render(app, document.getElementById('root'));
Polyfill.js:
import 'core-js/es6/map';
import 'core-js/es6/set';
import 'core-js/fn/object/assign';
This isn't working. I'm not sure what else to try. I've tried a lot of other polyfill imports as well and continue to get the same error.
Any help would be appreciated!
So, seeing as though create-react-app is what's restricting me from controlling the webpack config, I decided to take a different approach and build a fresh react app using webpack 4. I followed this article, https://dev.to/saigowthamr/how-to-create-a-react-app-from-scratch-using-webpack-4-1909.
This allowed me more control over the webpack config and now the polyfill loaders are working.
Nevertheless, if anyone has an explanation as to why it wasn't working with create-react-app, I think it'd be helpful for the community to know.
Thanks!
I have referred this documentation to add google-signin in my react native app, followed all the steps mentioned but could not get the result as specified in the documentation. I have imported the following statement
import { GoogleSignin, GoogleSigninButton, statusCodes } from 'react-native-google-signin';
But Whenever I add this statement in my login file it gives me following error.
i think you need make some changed in your file path shown in error message
F:\ReactProjects\SearchApp\node_modules\react-native-google-signin\src\GoogleSignin.android.js
make sure you import following two lines correctly
import React, { Component } from 'react';
import PropTypes from 'prop-types';
install this and your problem goes away "npm install --save prop-types"
I have created a simple application with react 16.2.0 and when I execute/run it on IE9 it shows me console error 'Set' or 'Map' is undefined.
I have found that there are some polyfills require to run my react application on IE9. I followed following steps and it worked for me. As React 16 depends on the collection types Map and Set. If you support older browsers and devices which may not yet provide these natively (e.g. IE < 11), consider including a global polyfill in your bundled application, such as core-js or babel-polyfill.
We also have to use requestAnimationFrame polyfill library which is raf
npm install --save raf
index.js
import 'core-js/es6/map';
import 'core-js/es6/set';
import 'raf/polyfill';
import React from 'react';
import ReactDOM from 'react-dom';
ReactDOM.render(
<h1>Hello, world!</h1>,
document.getElementById('root')
);
You should have to find and add pollyfills for set and map as well if it's not working.