Refactored index.js to match the new code style

index.js

@@ -1,57 +1,42 @@
-'use strict';
-
-/**
- * @module
- * @author Oleg Dutchenko <dutchenko.o.dev@gmail.com>
- * @version 1.0.3
- * @contributors
- * - April Arcus {@link https://github.com/AprilArcus}
- */
-
-var path = require('path')
- , escapeStringRegexp = require('escape-string-regexp')
- , ESCAPED_NODE_MODULES = escapeStringRegexp('node_modules')
- , ESCAPED_PATH_SEP = escapeStringRegexp(path.sep);
-
-// ----------------------------------------
-// Public
-// ----------------------------------------
+const path = require('path');
+const escapeStringRegexp = require('escape-string-regexp');
+const ESCAPED_NODE_MODULES = escapeStringRegexp('node_modules');
+const ESCAPED_PATH_SEP = escapeStringRegexp(path.sep);
 
 /**
  * Creating a regular expression for excluding node modules
  * from babel transpiling except for individual modules
  * @param {string[]} [exceptionList] - exclude all modules except this list
  * @return {RegExp}
  */
-function babelLoaderExcludeNodeModulesExcept (exceptionList) {
- var normalizedExceptionList
- , alternationGroup
- , negativeLookahead
-
+function babelLoaderExcludeNodeModulesExcept(exceptionList) {
  if (Array.isArray(exceptionList) && exceptionList.length) {
  // Module names can contain path separators, e.g. "@types/react".
  // Assume POSIX input and normalize for the current platform.
- normalizedExceptionList = exceptionList.map(function (moduleName) {
+ const normalizedExceptionList = exceptionList.map(function (moduleName) {
  // We'll handle trailing path separators when we build the
  // negative lookahead, so remove them if present.
  if (moduleName[moduleName.length - 1] === path.posix.sep) {
  moduleName = moduleName.slice(0, -1);
  }
  return moduleName.split(path.posix.sep).join(path.sep);
  });
- alternationGroup = '(' + normalizedExceptionList.map(escapeStringRegexp).join('|') + ')';
+
+ const alternationGroup =
+ '(' + normalizedExceptionList.map(escapeStringRegexp).join('|') + ')';
+
  // If the exception list includes e.g. "react", we don't want to
  // accidentally make an exception for "react-dom", so make sure to
  // include a trailing path separator inside the negative lookahead.
- negativeLookahead = '(?!' + alternationGroup + ESCAPED_PATH_SEP + ')';
- return new RegExp(ESCAPED_NODE_MODULES + ESCAPED_PATH_SEP + negativeLookahead, 'i');
+ const negativeLookahead = '(?!' + alternationGroup + ESCAPED_PATH_SEP + ')';
+
+ return new RegExp(
+ ESCAPED_NODE_MODULES + ESCAPED_PATH_SEP + negativeLookahead,
+ 'i'
+ );
  } else {
  return new RegExp(ESCAPED_NODE_MODULES, 'i');
  }
 }
 
-// ----------------------------------------
-// Exports
-// ----------------------------------------
-
 module.exports = babelLoaderExcludeNodeModulesExcept;