Wrong exit code when error thrown during custom transform

[chmontgomery]

When there is an error during a custom transform, the stream stops and prints an error properly but the exit code is wrong. The exit code is 0 but I expect it to be 1.

For example, if using require('gulp-bundle-assets').transformHelper.less() and there is a compile error inside a .less file, the stream will stop and print the error, but the node process will simply exit with the wrong code.

One possible solution is to simply process.exit(1) inside the stream-files.handleTransformError, however the ideal solution is to bubble up the error to gulp that the stream failed.