angular-moment-picker: Picker broken by minification

I’m using Gulp to create a build of my Angular app, unluckily seems that your directive is broken by the minification. This error is logged in each page containing the moment-picker directive.

TypeError: Cannot read property 'isAfterOrEqualMin' of undefined
    at Object.isSelectable (http://localhost:3000/scripts/vendor-7cd641134b.js:283:3615)
    at http://localhost:3000/scripts/vendor-7cd641134b.js:283:20461
    at Array.forEach (native)
    at e.render (http://localhost:3000/scripts/vendor-7cd641134b.js:283:20391)
    at render (http://localhost:3000/scripts/vendor-7cd641134b.js:283:7731)
    at r (http://localhost:3000/scripts/vendor-7cd641134b.js:8:10294)
    at y.$eval (http://localhost:3000/scripts/vendor-7cd641134b.js:8:13163)
    at y.$digest (http://localhost:3000/scripts/vendor-7cd641134b.js:8:11636)
    at t.$apply (http://localhost:3000/scripts/vendor-7cd641134b.js:8:13446)
    at HTMLTableCellElement.<anonymous> (http://localhost:3000/scripts/vendor-7cd641134b.js:10:20511)

The picker shows an empty calendar:

When clicking on the arrows the same error as before is thrown.

The build task is configured as follows:

gulp.task('build', build);

function build() {
  const partialsInjectFile = gulp.src(conf.path.tmp('templateCacheHtml.js'), {read: false});
  const partialsInjectOptions = {
    starttag: '<!-- inject:partials -->',
    ignorePath: conf.paths.tmp,
    addRootSlash: false
  };

  const htmlFilter = filter(conf.path.tmp('*.html'), {restore: true});
  const jsFilter = filter(conf.path.tmp('**/*.js'), {restore: true});
  const cssFilter = filter(conf.path.tmp('**/*.css'), {restore: true});

  return gulp.src(conf.path.tmp('/index.html'))
    .pipe(inject(partialsInjectFile, partialsInjectOptions))
    .pipe(useref())
    .pipe(jsFilter)
    .pipe(ngAnnotate())
    .pipe(uglify({preserveComments: uglifySaveLicense})).on('error', conf.errorHandler('Uglify'))
    .pipe(rev())
    .pipe(jsFilter.restore)
    .pipe(cssFilter)
    .pipe(cssnano())
    .pipe(rev())
    .pipe(cssFilter.restore)
    .pipe(revReplace())
    .pipe(htmlFilter)
    .pipe(htmlmin())
    .pipe(htmlFilter.restore)
    .pipe(gulp.dest(conf.path.dist()));
}

Any idea on how to solve?