Sourcemaps support

[CatBakun]

Hi!
I'm using the plugin with 'gulp-sourcemaps' like this, but I am not havving sourcemaps in the output.

gulp.task('transform-jsx', function() {
return gulp.src('./src/*/.jsx')
.pipe(msx({harmony: true}))
.pipe(sourcemaps.write())
.pipe(gulp.dest('./src'))
});

Do you know how can I get sourcemaps with 'gulp-msx'?