brunch build --production exits with status code 0 on error

[izakp]

Description

When running brunch build --production and brunch throws an error compiling assets, it still exits with status code 0. This is highly unusual default behavior and confusing when brunch is automated as part of a CI build pipeline.

Expected behavior

If brunch errors it should exit with a non-zero status code, especially when building for production

Actual behavior

In this test case, I have explicitly deleted the installation of babel-preset-es2015 in node_modules

$ brunch build --production
14 Jul 16:12:21 - error: Compiling of web/static/js/app.js failed. Couldn't find preset "/Users/izakp/Code/test/babel-preset-es2015" relative to directory "web/static/js"
14 Jul 16:12:21 - error: Compiling of web/static/js/socket.js failed. Couldn't find preset "/Users/izakp/Code/test/babel-preset-es2015" relative to directory "web/static/js"
14 Jul 16:12:22 - info: compiled app.css into app.css, copied 4 in 1.3 sec

$ echo $?
0

Environment

1. Brunch: 2.8.2
2. Node: 6.2.0
3. NPM: 3.8.9
4. Operating system: OSX 10.11.3 and Ubuntu 14.4

Using default configuration