executar o webpack
só rodar pra criar o bundle.js
./node_modules/.bin/webpack
precisa estar no webpack.config.js
const webpack = require('webpack')
module.exports = {
entry : './ex/index.js',
output:{
path: __dirname + '/public',
filename : './bundle.js'
},
devServer : {
port:8080,
contentBase : './public'
}
}