ionic-framework/tooling/generators/provider/index.js

The ionic-framework package comes with both Javascript and Sass frontend dependencies, located in the root of the package, and a Node API, located in `tooling/`.

var path = require('path'),
    Generator = require('../../generator');

module.exports = ProviderGenerator;

function ProviderGenerator(options) {
  Generator.call(this, options);
  this.directory = 'providers';
}

ProviderGenerator.prototype = Object.create(Generator.prototype);