I am trying to use frontools to compile my Magento theme. Before I used the standard grunt workflow but it is very slow as you might know.

I installed https://github.com/SnowdogApps/magento2-frontools as described and executed `gulp setup`

I also customied the `tools/helper/less.js` by adding `gulp-debug` 

    [ ... Around line 37 ]

    var debug = require('gulp-debug');
    return gulp.src(lessFiles)
      .pipe(debug({title: 'unicorn:'}))
      .pipe(plugins.plumber({ errorHandler: plugins.notify.onError('Error: <%= error.message %>') }))

    [...]


Output is

	$ gulp styles --theme example
	[18:07:09] Using gulpfile ~/my/workspace/example.de/vendor/snowdog/frontools/gulpfile.js
	[18:07:09] Starting 'styles'...
	[18:07:09] Starting 'less:example:en_US'...
	[18:07:10] Starting 'less:example:de_DE'...
	[18:07:10] Finished 'styles' after 1.24 s
	[18:07:10] unicorn: 0 items
	[18:07:10] unicorn: 0 items
	[18:07:10] Finished 'less:example:en_US' after 1.25 s
	[18:07:10] Finished 'less:example:de_DE' after 92 ms

my `theme.json`

	{
		"backend": {
		  "src": "app/design/adminhtml/Magento/backend",
		  "dest": "pub/static/adminhtml/Magento/backend",
		  "locale": [
		    "en_US"
		  ],
		  "lang": "less",
		  "default": true,
		  "area": "adminhtml",
		  "vendor": "Magento",
		  "name": "backend",
		  "files": [
		    "css/styles-old",
		    "css/styles"
		  ]
		},
		"blank": {
		  "src": "vendor/magento/theme-frontend-blank",    <---- i have change this, with app/design also it was not working 
		  "dest": "pub/static/frontend/Magento/blank",
		  "locale": [
		    "en_US"
		  ],
		  "lang": "less",
		  "default": true,
		  "area": "frontend",
		  "vendor": "Magento",
		  "name": "blank",
		  "files": [
		    "css/styles-m",
		    "css/styles-l",
		    "css/email",
		    "css/email-inline"
		  ]
		},
		"luma": {
		  "src": "app/design/frontend/Magento/luma",
		  "dest": "pub/static/frontend/Magento/luma",
		  "locale": [
		    "en_US"
		  ],
		  "lang": "less",
		  "default": true,
		  "area": "frontend",
		  "vendor": "Magento",
		  "name": "luma",
		  "files": [
		    "css/styles-m",
		    "css/styles-l"
		  ]
		},
		"example": {
		  "src": "app/design/frontend/Example/default",
		  "dest": "pub/static/frontend/Example/default",
		  "locale": [
		    "en_US",
		    "de_DE"
		  ],
		  "parent": "blank",
		  "lang": "less",
		  "area": "frontend",
		  "vendor": "Example",
		  "name": "default",
		  "files": [
		    "css/styles-m",
		    "css/styles-l"
		  ]
		},
		"sass-blank": {
		  "src": "vendor/snowdog/theme-blank-sass",
		  "dest": "pub/static/frontend/Snowdog/blank",
		  "locale": [
		    "en_US",
		    "pl_PL"
		  ],
		  "lang": "scss",
		  "postcss": [
		    "plugins.autoprefixer()"
		  ]
		},
		"sass-custom": {
		  "src": "vendor/snowdog/theme-custom",
		  "dest": "pub/static/frontend/Snowdog/custom",
		  "parent": "sass-blank",
		  "locale": [
		    "en_US",
		    "pl_PL"
		  ],
		  "lang": "scss",
		  "postcss": [
		    "plugins.autoprefixer()"
		  ]
		}
	}