opinion.js

// A
module.exports = (ctx, next) => {
  return ctx.view({ data });
}

module.exports = (data) => {
  data.test = false;
  return ctx.render({ data })
}

// B
module.exports = class Endpoint extends Konstructor.Endpoint {
  controller() {
    return this.view({ data });
  }

  view(data) {
    data.test = false;
    return this.render({ data }); // This is a hidden function in Konstructor.Endpoint
  }
}