No configuration file found and no output filename configured via CLI option.
A configuration file could be named 'webpack.config.js' in the current directory
.
Use --help to display the CLI options.
何解？？
你配置的里面写的路径名有问题，而且默认的webpack配置文件名是webpack.config.js，你有webpack.config.js文件吗？你试试这样写呢
module.exports = {
entry:'./src/script/main.js',
output:{
path: __dirname + '/dist/js',
filename:'bundle.js'
}
}