Could not find plugin “proposal-numeric-separator”

Question

How to fix Could not find plugin \"proposal-numeric-separator\", I get this error when I try to build my React application, I have not ejected the application y

Answer 1

I faced similar issue and i was able to fix it by updating all babel dependencies to latest version. I'm not aware of the exact issue with babel. However, the below mentioned step worked for me.

Step 1: identify and remove all babel related dependencies from package.json

npm remove @babel/runtime @babel/core @babel/plugin-proposal-class-properties @babel/plugin-transform-modules-commonjs @babel/plugin-transform-runtime @babel/preset-env @babel/preset-react babel-eslint babel-jest babel-loader

Step 2: re-install babel dependencies

npm install --save @babel/runtime

npm install --save-dev @babel/core @babel/plugin-proposal-class-properties @babel/plugin-transform-modules-commonjs @babel/plugin-transform-runtime @babel/preset-env @babel/preset-react babel-eslint babel-jest babel-loader

PS: The above list of babel dependencies will differ for your project.