Update signature of calls to TextBuffer::transact

src/text-editor-component.coffee

@@ -458,9 +458,8 @@ TextEditorComponent = React.createClass
     selectedLength = inputNode.selectionEnd - inputNode.selectionStart
     editor.selectLeft() if selectedLength is 1
 
-    insertedRange = editor.transact(->
+    insertedRange = editor.transact @constructor.groupingInterval, ->
       editor.insertText(event.data)
-    , @constructor.groupingInterval)
     inputNode.value = event.data if insertedRange
 
   onVerticalScroll: (scrollTop) ->

src/text-editor-element.coffee

@@ -141,9 +141,8 @@ editorEventListeners = (commandListeners) ->
       newCommandListeners[commandName] = (event) ->
         event.stopPropagation()
         model = @getModel()
-        model.transact(->
+        model.transact TextEditorComponent.groupingInterval, ->
           commandListener.call(model, event)
-        , TextEditorComponent.groupingInterval)
   newCommandListeners
 
 atom.commands.add 'atom-text-editor', editorEventListeners(

src/text-editor.coffee

@@ -1096,10 +1096,10 @@ class TextEditor extends Model
   # abort the transaction, call {::abortTransaction} to terminate the function's
   # execution and revert any changes performed up to the abortion.
   #
+  # * `groupingInterval` (optional) This is the sames as the `groupingInterval`
+  #    parameter in {::beginTransaction}
   # * `fn` A {Function} to call inside the transaction.
-  # * `groupingInterval` This is the sames as the `groupingInterval` parameter
-  #    in {::beginTransaction}
-  transact: (fn, groupingInterval) -> @buffer.transact(fn, groupingInterval)
+  transact: (groupingInterval, fn) -> @buffer.transact(groupingInterval, fn)
 
   # Extended: Start an open-ended transaction.
   #