build/tasks/clean.js
var gulp = require('gulp');
var paths = require('../paths');
var del = require('del');
var vinylPaths = require('vinyl-paths');
/**
* Clean task
* Run using "gulp clean"
* Cleans output directories
*/
gulp.task('clean', function() {
gulp.src([paths.output])
.pipe(vinylPaths(del));
gulp.src([paths.doc])
.pipe(vinylPaths(del));
});