Filter out non-directory project paths when deserializing Project

Closes #10628

spec/project-spec.coffee

@@ -21,6 +21,14 @@ describe "Project", ->
     afterEach ->
       deserializedProject?.destroy()
 
+    it "does not deserialize paths to non directories", ->
+      deserializedProject = new Project({notificationManager: atom.notifications, packageManager: atom.packages, confirm: atom.confirm})
+      state = atom.project.serialize()
+      state.paths.push('/directory/that/does/not/exist')
+      state.paths.push(path.join(__dirname, 'fixtures', 'sample.js'))
+      deserializedProject.deserialize(state, atom.deserializers)
+      expect(deserializedProject.getPaths()).toEqual(atom.project.getPaths())
+
     it "does not include unretained buffers in the serialized state", ->
       waitsForPromise ->
         atom.project.bufferForPath('a')

src/project.coffee

@@ -56,6 +56,7 @@ class Project extends Model
 
   deserialize: (state, deserializerManager) ->
     state.paths = [state.path] if state.path? # backward compatibility
+    state.paths = state.paths.filter (directoryPath) -> fs.isDirectorySync(directoryPath)
 
     @buffers = _.compact state.buffers.map (bufferState) ->
       # Check that buffer's file path is accessible