A simple Node.js file structure - my personal preference
APP_ROOT/
src/
components/ // A component can access other component through its controller only (not through model)
users/
controller.js
model.js
routes.js
associations.js // All associations/realtions between models
middlewares.js // All middlewares like for sending reponse, encrypting password, etc.(must not access any component)
validators.js // Clean and validate all incoming data
util.js // Utility functions
config/
constants.js
db.js // Connections to database
errors.js // Error formatting functions
migrations/
model.field.js // Migrations in case of a SQL database
views/
templates/
email.html // Template for sending mail, etc.
password-reset.html // Views which are to be rendered from the server(The MIT License)
Copyright (c) 2015 Sachin Bansal
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.