const less = {
    all: {
        options: {
            syncImport: true,
            relativeUrls: true,
            compress: true,
            urlArgs: 'v=1.2.1'  //force refresh image
        },
        plugins: [
            new LessPluginCleanCss({
                level: 2
            }),
            new LessPluginAutoprefix({
                browsers: [
                    'not ie < 10'
                ]
            })
        ],
        files: {
            '../web/css/base.css': join(srcPath, 'base.less')
        }
    }
}