Clarification on re: diffing 2 directories

[benjaminapetersen]

Greetings!

So the README has a nice usage example, but doesn't quite work as I expected. Example:

// 'build-to-temp-folder' does what 'build' does, just in ./.tmp
// this is so I can then test .dist against .tmp and validate that 
// the build task was run before merging in a branch.
// Jenkins will run this task & if there is a diff should fail.
gulp.task('verify', ['build-to-temp-folder'], function() {
 return gulp
 // get the tmp files
 .src(tmpAll) // tmpAll = './.tmp/**/*'
 // compare it to the build, there should be no diff
 .pipe(diff(distAll)) // distAll = './dist/**/*'
 // if there is, fail so Jenkins knows to say "not passing"
 .pipe(diff.reporter({ fail: true }));
});

This line:

.pipe(diff(/* 'target directory to diff against', defaults to diff against original source file */))

is what made me think this will work, but I get an events.js:141 throw er; // Unhandled 'error' event. It appears that you may only be able to gulp.src(files).pipe(doSomething()).pip(diff()), and test for a diff. Is there anyway to do what I am intending?

Browsing source now to see if I can figure this out.

[benjaminapetersen]

ping! just checking if this repo is still alive.