gulpfile.js

var gulp = require('gulp');
var filter = require('gulp-filter');
var vinylPaths = require('vinyl-paths');
var fs = require('fs');

gulp.task('clean', function (cb) {
	var vp = vinylPaths();
	gulp.src([ '**/{*.js,*.js.map}', '!node_modules/**/*' ], { read: false })
		.pipe(filter(function (file) {
			var jsName = file.path.match(/(.*\.js)(?:\.map)?$/)[1];
			return fs.existsSync(jsName) && fs.existsSync(jsName + '.map');
		}))
		.pipe(vp)
		.on('end', function () {
			console.log('PATHS', vp.paths);
			cb();
		});
});