angular-nevera-generator/generators/service/templates/src/app/service.js

Yeoman AngularJS scaffold a webapp with Angular 1 written in ES6 (Babel), TypeScript through Webpack or SystemJS including tools Gulp 4, ESLint, Browsersync and Karma

function <%- serviceName %>() {
}

<%- serviceName %>.prototype.getData = function () {
  return 1 + 2;
};

<% if (modules === 'inject') { -%>
<% include inject/service.js %>
<% } else { -%>
<% include modules/service.js %>
<% } -%>