Ghost publishing platform sources: how hbs template engine is set to its site app
core js codes in core/server/services/themes/active.js: // Set the views and engine siteApp.set('views', this.path); siteApp.engine('hbs', engine.configure(this.partialsPath)); Refers https://expressjs.com/en/guide/using-template-engines.html https://docs.ghost.org/api/handlebars-themes/