Customize Atom tab titles to display folder and file name

init.coffee

# Just create 'init.coffee' in your .atom directory
# Add folder and filename to tab title
# Suggested when using many 'index.js'
# When the file name is 'index.js' it uses the last two paths
# EX: src/components/pages/Domain/SubDomain/index.js -> Domain/SubDomain
atom.workspace.observeTextEditors (editor) ->
  if editor.getTitle() isnt "untitled"
    pathNames = editor.getPath().split('/')
    length = pathNames.length
    title = pathNames[length - 1]

    if pathNames[length - 1] == 'index.js'
      title = pathNames[length - 3...length - 1].join '/'

    editor.getTitle = -> title
    editor.getLongTitle = -> title
    editor.emitter.emit "did-change-title", editor.getTitle()

atom.workspace.onDidOpen (event) ->
  for item in event.pane.items
    if item.emitter?
      item.emitter.emit "did-change-title", item.getTitle()