index.js

// app/controllers/datasources/index.js

// 1
datasources: Ember.computed.sort('model', 'name')
=> Uncaught Error: Assertion Failed: The sort definition for 'datasources' must be a function or an array of strings

// 2
datasources: Ember.computed.sort('model', ['name'])
=> Uncaught Error: Assertion Failed: The key provided to get must be a string, you passed name

// 3
datasourceSorting: ['name'],
datasources: Ember.computed.sort('model', 'datasourceSorting')
=> OK