Deleting tmp files

[nealoke]

Using this module to create above the fold css for a couple of php files in gulp.

Task:

return gulp.src('../app/*.php')
	        .pipe(critical({
	        	base: '../app/',
	        	inline: false,
				dimensions: [
					{
				        width: 320,
				        height: 650
				    }, 
				    {
				        width: 1200,
				        height: 900
				    }
				],
	        	css: ['../app/styles/global.css'],
	        	ignore: [/url\(/, '@font-face'],
	        }))
			.pipe(autoprefixer({cascade: false}))
			.pipe(minifyCss({compatibility: 'ie8'}))
			.pipe(csso({sourceMap: false}))
			.pipe(cssnano({safe: true}))
			.pipe(wrapper({wrapper: '<style type="text/css">{file}</style>'}))
			.pipe(rename({
				suffix: "-ATF",
				extname: ".php"
			}))
	        .pipe(gulp.dest('../export/php/ATF'));

However using this the task also creates tmp files such as
tmp-980GlwutZwYavbs and tmp-9800JKMaeQij1UL which are the html pages created by phantom I guess. Also these tmp files are not in a direcotry listed anywhere in the task, which makes it more of a mystery.

Is there a way to delete these automatically?

[nealoke]

This only occurs if the critical({ base }) is different then the gulp.dest() path