require function is used in a way in which dependencies cannot be statically extracted

I added console.log(require.ensure) to my code and it resulted in thousands of error lines from webpack. Had to increase my tmux scrollback to 40K lines to see what happened.

[...]
WARNING in ./src/routes.js
Critical dependencies:
158:18-25 require function is used in a way in which dependencies cannot be statically extracted
 @ ./src/routes.js 158:18-25

WARNING in ./src/containers/Admin/TODO.md
Module parse failed: /Users/olalonde/code/project/src/containers/Admin/TODO.md Unexpected token (1:13)
You may need an appropriate loader to handle this file type.

[...]

Not sure if it’s really a bug but would have been nice if that message had been isolated from all the subsequent thousands of error lines that are really irrelevant.

[sokra]

This is fixed in webpack@2

[aj-r]

In case anyone else comes across this - I got this error because I was using "module": "umd" in my tsconfig.json. The solution was to use "module": "commonjs" instead - you can still get umd output by using libraryTarget: "umd" in webpack.config.js.