Closes #1224, see #1209. Improve error handling of Debug helper

package.json

@@ -124,7 +124,7 @@
     "coffee-formatter": "^0.1.2",
     "coffee-script": "^1.10.0",
     "csscomb": "^3.1.7",
-    "diff": "^3.0.0",
+    "diff": "3.0.0",
     "editorconfig": "^0.13.2",
     "event-kit": "^2.1.0",
     "expand-home-dir": "0.0.3",

src/beautify.coffee

@@ -281,7 +281,7 @@ beautifyDirectory = ({target}) ->
   return
 
 debug = () ->
-
+  try
     open = require("open")
     fs ?= require "fs"
     GitHubApi = require("github")
@@ -367,7 +367,7 @@ debug = () ->
     addInfo('Selected Beautifier', selectedBeautifier.name)
 
     # Get current editor's text
-  text = editor.getText()
+    text = editor.getText() or ""
 
     # Contents
     codeBlockSyntax = (language?.name ? grammarName).toLowerCase().split(' ')[0]
@@ -450,8 +450,9 @@ debug = () ->
         addInfo('Beautified File Contents', "\n```#{codeBlockSyntax}\n#{result}\n```")
         # Diff
         JsDiff = require('diff')
-      diff = JsDiff.createPatch(filePath, text, \
-        result, "original", "beautified")
+        if typeof result is "string"
+          diff = JsDiff.createPatch(filePath or "", text or "", \
+            result or "", "original", "beautified")
           addInfo('Original vs. Beautified Diff', "\n```#{codeBlockSyntax}\n#{diff}\n```")
 
         addHeader(3, "Logs")
@@ -514,6 +515,19 @@ debug = () ->
       catch e
         return cb(e)
     )
+    .catch((error) ->
+      stack = error.stack
+      detail = error.description or error.message
+      atom?.notifications?.addError(error.message, {
+        stack, detail, dismissable : true
+      })
+    )
+  catch error
+    stack = error.stack
+    detail = error.description or error.message
+    atom?.notifications?.addError(error.message, {
+      stack, detail, dismissable : true
+    })
 
 handleSaveEvent = ->
   atom.workspace.observeTextEditors (editor) ->