text: 
  !function(){
  	var VERSION = process.env.npm_package_version,
  		LOCATION = process.env.CUSTOM_LOC,
  		fRgx = /^mergesort\.(?:[0-9]+\.){3}(?:es5|evergreen)\./i,
  		fs = require('fs'),
  		fsPromises = fs.promises,
  		refPromise = {v: Promise.resolve()},
  		path = require('path'),
  		files = fs.readdirSync(LOCATION)
  			.forEach(fName => {
  				if(fRgx.test(fName)) {
  					var source = path.join(LOCATION, fName);
  					refPromise.v = refPromise.v.then(function(){
  						return fsPromises.unlink(source);
  					});
  				}
  			},refPromise);
  }();