I have been programming a database that is linked to React, but after a while I installed a library that is babel-core and other libraries, but always when compiling I get an error that is the following:
ERROR in ./src/app/index.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: Cannot find module 'babel-core'
{
"name": "Mern-Stack-Example",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "nodemon node src/app.js",
"webpack": "webpack --mode development"
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
//These
"@babel/cli": "^7.12.10",
"@babel/core": "^7.12.10",
"@babel/node": "^7.12.10",
"@babel/preset-env": "^7.12.11",
"@babel/preset-react": "^7.12.10",
"babel-loader": "^7.1.5",
"nodemon": "^2.0.7",
"webpack": "^5.17.0",
"webpack-cli": "^4.4.0"
},
"dependencies": {
"cors": "^2.8.5",
"express": "^4.17.1",
"mongoose": "^5.11.13",
"morgan": "^1.10.0",
"react": "^17.0.1",
"react-dom": "^17.0.1"
}
}
But I have changed it and the error keeps appearing, I don't know how to solve it, if someone knows please help me
Webpack.Confg:
module.exports = {
entry: './src/app/index.js',
output: {
path: __dirname + '/src/public/js',
filename: 'bundle.js'
},
module: {
rules: [
{
use: 'babel-loader',
test: /\.js$/,
exclude: /node_modules/
}
]
}
};
And.Babel
{ "presets": [ "@babel/preset-env", "@babel/preset-react" ] }
Remove your node_modules and follow these steps:
npm install --save-dev @babel/core @babel/cli @babel/preset-env @babel/node
Then, check the existence of these files:
node_modules/.bin/babel-node
node_modules/.bin/babel-node.cmd - windows only
node_modules/@babel/node/bin/babel-node.js
Generally, these issues might come in due to the version conflicts. Try to install nvm and use lesser node version. Also, you should use previous versions of babel packages
@babel/preset-env
@babel/preset-react
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