DefinitelyTyped/types/webpack-stream/webpack-stream-tests.ts

import * as webpack from 'webpack';
import webpackStream = require('webpack-stream');

let output: NodeJS.ReadWriteStream;

output = webpackStream();
output = webpackStream({ entry: '' });
output = webpackStream({ entry: '' }, webpack);
output = webpackStream({ entry: '' }, webpack, (error: Error, stats: webpack.compiler.Stats) => { });