TypeError: Cannot read property '.js' of undefined

[foxhound87]

Versions

• Material-UI: 0.15.2
• React: 15.3.0
• Webpack: 1.13.1

Environment:
OSX 10.11.6

Language:
ES6/7

Current behavior:

Error thrown here: oldHandlers[ext] = (void 0)[ext]; in hookExtensions()

After building, when run I get the same error as explained here:
http://stackoverflow.com/questions/37275183/webpack-bundle-throwing-uncaught-type-error

Webpack Configs

• /webpack.config.babel.js (main file)
• /webpack (all config files)

The issue occurs when disabling externals: nodeModules() from webpack/config.server.js
and removing the webpack-hot-middleware with all related stuff from the project (which prevent webpack.config.babel.js to be reloaded a second time here)

[oliviertassinari]

The error seems unrelated to Material-UI. I'm closing it.