contain-element/gulpfile.js

var gulp   = require('gulp');
var ugly   = require('gulp-uglify');
var concat = require('gulp-concat');

gulp.task('min', function() {
	return gulp.src('contain-element.js')
		.pipe(ugly())
		.pipe(concat('contain-element.min.js'))
		.pipe(gulp.dest('./'));
});

gulp.task('default', ['min']);