Adding index.js to load es5 or es6 depending on the test environment

Author: avoidwork

Gruntfile.js

@@ -81,9 +81,9 @@ module.exports = function(grunt) {
 			banner = "/*\n " + new Date().getFullYear() + " " + pkg.author + "\n @version " + pkg.version + "\n*/\n\"use strict\";";
 
 		fs.writeFileSync(path.join(__dirname, "lib", "filesize.es6.min.js"), banner + minified.code + "\n//# sourceMappingURL=filesize.es6.min.js.map", "utf8");
-		grunt.log.ok("Created minified es6 file");
+		grunt.log.ok("1 file created.");
 		fs.writeFileSync(path.join(__dirname, "lib", "filesize.es6.min.js.map"), JSON.stringify(minified.map), "utf8");
-		grunt.log.ok("Created minified es6 source map");
+		grunt.log.ok("1 sourcemap created.");
 	});
 
 	// aliases

index.js

@@ -0,0 +1 @@
+module.exports = require(require("path").join(__dirname, "lib", Number(process.version.replace("v", "").split(".")[0]) >= 6 ? "filesize.es6" : "filesize"));

lib/filesize.es6.js

@@ -3,7 +3,7 @@
  *
  * @copyright 2017 Jason Mulligan <[email protected]>
  * @license BSD-3-Clause
- * @version 3.5.7
+ * @version 3.5.8
  */
 (function (global) {
 	const b = /^(b|B)$/,

lib/filesize.es6.min.js

@@ -5,7 +5,7 @@
  *
  * @copyright 2017 Jason Mulligan <[email protected]>
  * @license BSD-3-Clause
- * @version 3.5.7
+ * @version 3.5.8
  */
 (function (global) {
 	var b = /^(b|B)$/,