Cannot find module '@babel/core'

Try running this.

npm install @babel/core --save

babel changed their package so your babel-core will not be the same as @babel/core.

node.js reactjs npm webpack babeljs

The recent Babel upgrade to version 7 changed the namings of the node packages.

For instance, now you have to install

npm install --save-dev @babel/core @babel/preset-env

and

npm install --save-dev @babel/preset-react

to get it working with React. Then you can use these in your .babelrc file:

{  "presets": [    "@babel/preset-env",    "@babel/preset-react"  ]}

Or as alternative, when not having a .babelrc, in your package.json:

..."keywords": [],"author": "","license": "ISC","babel": {  "presets": [    "@babel/preset-env",    "@babel/preset-react"  ]},"devDependencies": {...

If you want to get more into it, you can checkout this recent Webpack + Babel + React setup.

node.js reactjs npm webpack babeljs

I removed the existing npm uninstall babel-core babel-preset-env babel-preset-react

and added their new names npm install --save-dev @babel/core @babel/preset-env @babel/preset-reactthat's works for me as perfectly fine.

CodeHunter