need to update dependencies for webpack 3

[Leo Mao]

• Node Version: 8.1.3
• NPM Version: 4.6.1
• yarn Version: 0.27.3 (I use yarn)
• koa Version: 2.3.0
• koa-wepback Version: 0.5.1

I found that using the current version of koa-webpack will encounter the following error:

records.chunkModuleIds[chunk.id] = chunk.mapModules(function(m) {                  
                                         ^                  

TypeError: chunk.mapModules is not a function

After installing the latest webpack-dev-middleware and webpack-hot-middleware and
copying the entire index.js (from this project) into my code to substitute the original module, webpack works smoothly.

[Andrew Powell]

a PR here would be the best route, rather than an issue. :)

[Leo Mao]

a PR here would be the best route, rather than an issue. :)

Yes, you're right. But I'm not sure if updating the dependencies will cause other problems or not.

I found that the actual problem is that koa-webpack depends on webpack=^2.3.0, which is not compatible with webpack=^3.0.0. So, when using webpack 3.0, this module will still use webpack 2.3 (in its node_modules). This leads to the issue mentioned above.

Is it safe to change the dependency version to webpack>=2.3?

[Tony Ko]

I got the same error but I just passed my own webpack instance (3.3.*) which fixed it:

import Webpack from 'webpack';
import config from './webpack.config.js';
const compiler = Webpack(config);
app.use(middleware({
  compiler: compiler
}))

[Andrew Powell]

Landed in 1.0.0