also skip comment line source maps for other langs

Author: yyx990803

lib/parser.js

@@ -6,6 +6,13 @@ var hash = require('hash-sum')
 var deindent = require('de-indent')
 var splitRE = /\r?\n/g
 var emptyRE = /^\s*$/
+var commentSymbols = {
+  'coffee': '#',
+  'coffee-jsx': '#',
+  'coffee-redux': '#',
+  'purs': '--',
+  'ulmus': '--'
+}
 
 module.exports = function (content, filename, needMap) {
 
@@ -110,7 +117,8 @@ module.exports = function (content, filename, needMap) {
       // do not add mappings for comment lines - babel's source map
       // somehow gets messed up because of it
       var isCommentLine = function (line) {
-        return type === 'script' && !lang && line.indexOf('//') === 0
+        return type === 'script' &&
+          line.indexOf(getCommentSymbol(lang)) === 0
       }
 
       result.split(splitRE).forEach(function (line, index) {
@@ -151,25 +159,19 @@ module.exports = function (content, filename, needMap) {
 }
 
 function commentScript (content, lang) {
+  var symbol = getCommentSymbol(lang)
   return content
     .split(splitRE)
     .map(function (line) {
-      line = emptyRE.test(line) ? '' : ' ' + line
-      switch (lang) {
-        case 'coffee':
-        case 'coffee-jsx':
-        case 'coffee-redux':
-          return '#' + line
-        case 'purs':
-        case 'ulmus':
-          return '--' + line
-        default:
-          return '//' + line
-      }
+      return symbol + (emptyRE.test(line) ? '' : ' ' + line)
     })
     .join('\n')
 }
 
+function getCommentSymbol (lang) {
+  return commentSymbols[lang] || '//'
+}
+
 function getAttribute (node, name) {
   if (node.attrs) {
     var i = node.attrs.length