npm install --save-dev start-clean-css # or yarn add --save-dev start-clean-cssimport start from 'start'; import reporter from 'start-pretty-reporter'; import files from 'start-files'; import clean from 'start-clean'; import read from 'start-read'; import less from 'start-less'; import rename from 'start-rename'; import cleanCSS from 'start-clean-css'; import write from 'start-write'; export const build = () => start(reporter())( files('build/'), clean(), files('lib/**/*.less'), read(), less({ sourceMap: true }), rename(file => file.replace(/\.less$/, '.css')), write('build/'), cleanCSS({ sourceMap: true }), rename(file => file.replace(/\.css$/, '.min.css')), write('build/') );This task relies on [{ path, data, map }] input and provides the same, see documentation for details.
cleanCSS(options)
options– CleanCSS options,{ rebase: false, sourceMapInlineSources: true }by default