Всем привет. У меня такая проблема. При импорте файла в котором находится класс с функциями для базы данных.
Я установил npm i mongodb. Но показывает куча ошибок.
ERROR in ./node_modules/mongodb/lib/cursor/abstract_cursor.js 7:17-34
Module not found: Error: Can't resolve 'stream' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib\cursor'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "stream": require.resolve("stream-browserify") }'
- install 'stream-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "stream": false }
ERROR in ./node_modules/mongodb/lib/gridfs/download.js 7:17-34
Module not found: Error: Can't resolve 'stream' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib\gridfs'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "stream": require.resolve("stream-browserify") }'
- install 'stream-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "stream": false }
ERROR in ./node_modules/mongodb/lib/gridfs/upload.js 7:17-34
Module not found: Error: Can't resolve 'stream' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib\gridfs'
ERROR in ./node_modules/mongodb/lib/sdam/srv_polling.js 7:12-26
Module not found: Error: Can't resolve 'dns' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib\sdam'
ERROR in ./node_modules/mongodb/lib/sdam/srv_polling.js 8:17-34
Module not found: Error: Can't resolve 'timers' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib\sdam'
ERROR in ./node_modules/mongodb/lib/sdam/topology.js 9:15-30
Module not found: Error: Can't resolve 'util' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib\sdam'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "util": require.resolve("util/") }'
- install 'util'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "util": false }
ERROR in ./node_modules/mongodb/lib/utils.js 8:15-32
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "crypto": require.resolve("crypto-browserify") }'
- install 'crypto-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "crypto": false }
ERROR in ./node_modules/mongodb/lib/utils.js 9:11-24
Module not found: Error: Can't resolve 'os' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "os": require.resolve("os-browserify/browser") }'
- install 'os-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "os": false }
ERROR in ./node_modules/mongodb/lib/utils.js 10:14-28
Module not found: Error: Can't resolve 'url' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\mongodb\lib'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "url": require.resolve("url/") }'
- install 'url'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "url": false }
ERROR in ./node_modules/saslprep/lib/memory-code-points.js 3:11-24
Module not found: Error: Can't resolve 'fs' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\saslprep\lib'
ERROR in ./node_modules/saslprep/lib/memory-code-points.js 4:13-28
Module not found: Error: Can't resolve 'path' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\saslprep\lib'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "path": require.resolve("path-browserify") }'
- install 'path-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "path": false }
ERROR in ./node_modules/socks/build/client/socksclient.js 35:12-26
Module not found: Error: Can't resolve 'net' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\socks\build\client'
ERROR in ./node_modules/socks/build/common/helpers.js 9:15-32
Module not found: Error: Can't resolve 'stream' in 'C:\Users\dimay\Desktop\KP\tomato\node_modules\socks\build\common'
BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.
If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "stream": require.resolve("stream-browserify") }'
- install 'stream-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "stream": false }
Код файла который экспортирую
const {MongoClient} = require('mongodb');
const client = new MongoClient('mongodb+srv://dimay:smUCZkYrknU6z@cluster0.swkj6bi.mongodb.net/Tomato?retryWrites=true&w=majority');
class DataBase {
static async addNewUser(email, password){
try{
await client.connect();
console.log('OK');
const users = client.db().collection('users');
await users.insertOne({email:email, password: password});
}catch (e){
console.log(e);
}
}
static async checkUserEmail(email){
try{
await client.connect();
console.log('OK');
const users = client.db().collection('users');
const user = await users.findOne({email: email});
if(user===null){
return [false]
}else{
console.log(user);
return [true, user]
}
}catch (e){
console.log(e);
}
}
}
export default DataBase
А вот код куда я его импортирую.
import './login.css';
import DataBase from '../../services/mongo.js';
import {useState} from 'react'
function Login() {
const [email, setEmail] = useState('')
const [password, setPassword] = useState('')
const checkValidUser = async () =>{
let result = await DataBase.checkUserEmail(email);
if(!result[0]){
console.log('Unknow email');
}else{
if(password === result[1]){
console.log('ok')
}else{
console.log('wrong password')
}
}
}
return (
<section className='login'>
<div className="container">
<form className="login_inputs" onSubmit={checkValidUser}>
<label className="label__item" for="email">Enter e-mail</label>
<input onChange={(e)=>setEmail(e.target.value)} className="inputs__item_log" type="text" placeholder='E-mail' name="email"/>
<label className="label__item" for="password">Enter your password</label>
<input onChange={(e)=>setPassword(e.target.value)} className="inputs__item_log" type="text" placeholder='Password' name='password'/>
<button className='btn-login' >Login</button>
</form>
</div>
</section>
);
}
export default Login;
pachage.json
{
"name": "tomato",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^5.16.5",
"@testing-library/react": "^13.4.0",
"@testing-library/user-event": "^13.5.0",
"mongodb": "^4.10.0",
"mongodb-client-encryption": "^2.3.0",
"react": "^18.2.0",
"react-dom": "^18.2.0",
"react-router-dom": "^6.4.2",
"react-scripts": "5.0.1",
"web-vitals": "^2.1.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"externals": ["mongodb-client-encryption"],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
