I have something like this.
I want to import multi images with shorter code.
I tried to use a template string like this
But it seems to require not to show my image.
You can use an index file to re-export all the images in folder
assets/images/forest/index.js
import layer0001 from './Layer_0001.png';
import layer0002 from './Layer_0002.png';
import layer0003 from './Layer_0003.png';
export { layer0001, layer0002, layer0003 };
and importing them as named import
import { layer0001, layer0002, layer0003 } from 'assets/images/forest';
or import everything
import * as forest from 'assets/images/forest';
which allow you to do a dynamic URL like
let layer = 'layer001';
backgroundImage: `url(${forest[layer]})`
We use lodash in an angular app written with typescript. Currently we import lodash as follows:
import * as _ from 'lodash';
//.. code which uses _.pluck()
However, for the sake of tree shaking, we want to change to the following:
import {pluck, delay} from 'lodash';
//.. code which uses _.pluck() needs changed to pluck()
The problem is we need to do a lot of tedious code changes because using the second import method loses the namespace of _ and there could be name conflicts. Is there a way of specifying the things we want to import but maintain the namespace? I was thinking something as follows, but it doesn't work:
import {pluck, delay} as _ from 'lodash';
//.. code which uses _.pluck() needs changed to pluck()
Not directly in import but you can create the _ object manually.
import { pluck, delay } from 'lodash';
const _ = { pluck, delay };
I am currently setting up my Redux store and importing many different reducer files. This is beginning to look messy and wanted to know if there was a way to import all modules with the same file suffix. So currently...
import reducerOne from '../fileOne/one.reducer.js;
import reducerTwo from '../fileTwo/two.reducer.js;
import reducerThree from '../pathThree/fileThree/three.reducer.js;
import reducerFour from '../four.reducer.js;
import reducerFive from './five.reducer.js;
import reducerSix from '../longPathSix/pathSix/fileSix/six.reducer.js;
import reducerSeven from '../pathSeven/seven.reducer.js;
Is there a way that I can import all 'reducer.js' files instead of manually import each module separately when each of the file paths is different?
As written in the duplicate question:
If you create an extra file reducers.js, with this definition:
import reducerOne from '../fileOne/one.reducer.js;
import reducerTwo from '../fileTwo/two.reducer.js;
import reducerThree from '../pathThree/fileThree/three.reducer.js;
import reducerFour from '../four.reducer.js;
import reducerFive from './five.reducer.js;
import reducerSix from '../longPathSix/pathSix/fileSix/six.reducer.js;
import reducerSeven from '../pathSeven/seven.reducer.js;
export {
reducerOne,
reducerTwo,
reducerThree,
reducerFour,
reducerFive,
reducerSix,
reducerSeven
};
Then you can use this in your main file:
import { reducerOne, reducerTwo, reducerThree, reducerFour, reducerFive, reducerSix, reducerSeven } from '../reducers.js';
You basically 'bundle' all your reducers into one file with only one path. And since it's very few syntax, automating it to create such a file is trivial.
I have the same error as this answer, except instead of it just occurring in one file it is occurring in many; once I fix it for one file, another just pops up with the same error. I've seen this answer but whenever I run react-scripts start a node_modules folder is created in my src, so that solution isn't viable.
It would be too time consuming to have to fix every file that has this error every time I compile, so how can I get rid of this error? It seems to just be an eslint issue.
you will get this error if you declare variable in between your imports,
import React from 'react';
import axios from 'axios';
const URL = process.env.REACT_APP_API_BASE;
import demoXLXSFile from '../../assets/others/Demo.xlsx';
import './student.list.styles.scss';
declare variables after importing everything,
import React from 'react';
import axios from 'axios';
import demoXLXSFile from '../../assets/others/Demo.xlsx';
import './student.list.styles.scss';
const URL = process.env.REACT_APP_API_BASE;
I found this issue while I was using React.lazy in my existing project. I got this error Failed to compile. :- Import in body of module; reorder to top import/first (with create-react-app).
import React from 'react';
import SelectField from '../inputs/SelectField';
const Questions = React.lazy(() => import('./questions'))
import _ from 'lodash';
Solution:-
Only reorder the position i.e. put all import on top then react.lazy.
import React from 'react';
import SelectField from '../inputs/SelectField';
import _ from 'lodash';
const Questions = React.lazy(() => import('./questions'))
I got this same error when I added an extra semicolon ';' at the end of an import statement.
I suggest removing any extraneous semicolons. This should make the error go away.
Moving every import statement to the top of the file solves the issue.
Happened to me when I put require before import like this:
require('dotenv').config()
import React from 'react';
import ReactDOM from 'react-dom';
...
Solution: Put the require after the imports
If You are using Component Lazy loading then always put lazy load component import code below normal import code.
Correct Example
import First from './first'
const Second = React.lazy(()=>import("./Second))
Incorrect Example
const Second = React.lazy(()=>import("./Second))
import First from './first'
I came across this issue too. I found that you must import all ES6 modules at the top level of your JavaScript files."... the structure of ES6 modules is static, you can’t conditionally import or export things. That brings a variety of benefits.
This restriction is enforced syntactically by only allowing imports and exports at the top level of a module:"
From Dr. Axel Rauschmayer’s Exploring JS:
Wrong
1.
import React ,{useState ,useEffect} from 'react';
import './App.css';
import Post from './Post';
import db from "./firebase"
Right
2.
import React ,{useState ,useEffect} from 'react';
import './App.css';
import Post from './Post';
import db from "./firebase.js"
//this is code firebase.js
const db = firebaseApp.firestore();
const auth = firebase.auth();
const storage = firebase.storage();
export default {db,auth,storage};
When I change the firebase into firebase.js in Snippet 2.
My Error vanished
I had forgotten to add from.
Before:
import UpperBlock;
After:
import UpperBlock from "../components/dashboard/shared/UpperBlock";
Make sure you import well your component and then stop the server and restart it again. It worked for me.
I forgot to add {Component} after importing 'react' library to my project, this solved my issue.
Move all of your imports to the top of the file.
Even in case of a require (that is written in between import statements), this error will come.
e.g.
import 'some_module';
require('some_file');
import 'some_other_module');
This would result in an error.
You would want to do this instead:
import 'some_module';
import 'some_other_module');
require('some_file');
I was facing the same issue when I installed chat.js library in my reactJs project. I solved this issue by moving my chart.Js import to the index.js file
index.js file:
import React from "react";
import ReactDOM from "react-dom";
import { Chart as ChartJS, ArcElement, Tooltip, Legend } from "chart.js"; <--- imported
import "./index.css";
import App from "./App";
ChartJS.register(ArcElement, Tooltip, Legend); <---- imported
If you're experiencing this error in modern versions of react(current version 18.0.0) make sure you're making all your imports before the ReactDOM.createRoot declaration.
For example, I got the error with:
import App from "./App";
import reportWebVitals from "./reportWebVitals";
const root = ReactDOM.createRoot(document.getElementById("root"));
import { Provider } from "./context";
This will result in an error. Instead, import everything before the createRoot:
import App from "./App";
import reportWebVitals from "./reportWebVitals";
import { Provider } from "./context";
const root = ReactDOM.createRoot(document.getElementById("root"));
This will fix the error. Simple fix but it's easy to miss
If I put double Semicolon behind the importing statement than I got "error".you can see difference between two pictures in import './index.css'; is different
For Example :-
import React from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';;
import 'tachyons';
import {robots} from "./Robots";
import reportWebVitals from './reportWebVitals';
import CardList from './CardList';
I was importing one of the polyfill, "es6-promise" in my jsx file of react application but was not able to import it in a correct way.
I googled N number of solution finally one worked for IE.
require('es6-promise').polyfill()
its working fine but, why it was not working for import es6-promise from "es6-promise";
Is there any way to import it first in a variable and then calling the .polyfill() method to that variable?
There a multiple ways of how you can import other modules in your code: import
For example:
import * as ES6Promise from 'es6-promise';
ES6Promise.polyfill();
Just a couple more ways you can do it.
import { polyfill } from 'es6-promise';
polyfill();
or
import ES6Promise from 'es6-promise';
ES6Promise.polyfill();