reactjs - Getting started with React -

i'm setting react first time following tutorial. created main.js , ran various commands. last command gives me error:

to install react dom , build bundle webpack:  $ npm install --save react react-dom babel-preset-react $ webpack 

when run webpack receive error:

output filename not configured

it points me usage docs. usage docs tells me command line interface expects input of form:

webpack <entry> <output> 

obviously command webpack shown in react tutorial not meet criteria. did wrong?

create webpack.config.js, eg.:

module.exports = {   context: __dirname + "/app",   entry: {     jsx: './main.js',     html: './index.html'   },   output: {     path: __dirname + '/dist',     filename: 'bundle.js'   } }