error: cannot find symbol databinding.ActivityMainBinding; code example

Example 1: Error: Cannot find module 'webpack-dev-server'

npm install --save-dev webpack-dev-middleware webpack-hot-middleware

Example 2: Error: Cannot find module '@babel/core'

For those wanting to use babel-loader 8+: it requires Babel 7.x,, which is to be installed as the '@babel/core' package instead of 'babel-core'. In other words, run:

>npm install --save-dev @babel/core