Replace ‘\n’ with os.EOL (#524)

Author: obenjiro

src/cli.js

@@ -9,6 +9,7 @@
 var fs = require('fs');
 var parseArgs = require('minimist');
 var path = require('path');
+var os = require('os');
 
 var Comb = require('./csscomb');
 var Errors = require('./errors');
@@ -86,9 +87,10 @@ function displayHelp() {
     '    -v, --verbose',
     '        Whether to print logging info.',
     '    -t, --tty-mode',
-    '        Run the tool in TTY mode using external app (e.g. IDE).'
+    '        Run the tool in TTY mode using external app (e.g. IDE).',
+    ''
   ];
-  process.stdout.write(help.join('\n') + '\n');
+  process.stdout.write(help.join(os.EOL));
 }
 
 function detectConfig() {
@@ -162,7 +164,7 @@ function processFiles(files) {
           `${c.length} file${c.length === 1 ? '' : 's'} processed`,
           `${changed} file${changed === 1 ? '' : 's'} fixed`,
           ''
-          ].join('\n');
+          ].join(os.EOL);
       process.stdout.write(message);
     }
 

src/core.js

@@ -4,6 +4,7 @@
 require('babel-polyfill');
 
 let fs = require('fs');
+var os = require('os');
 let gonzales = require('gonzales-pe');
 let minimatch = require('minimatch');
 let Errors = require('./errors');
@@ -145,7 +146,7 @@ class Comb {
         result.push(ln + ' | ' + line);
       }
     }
-    return result.join('\n');
+    return result.join(os.EOL);
   }
 
   /**
@@ -364,7 +365,7 @@ class Comb {
         let message = filename ? [filename] : [];
         message.push(e.message);
         message.push('CSScomb Core version: ' + version);
-        e.stack = e.message = message.join('\n');
+        e.stack = e.message = message.join(os.EOL);
         throw e;
       }
     });