How to emit an event from Vue.js Functional component?

Question

As the title of the question, this context is not available in the functional component. So if I have to emit an event, how can I do that?

For example in be

Answer 1

Child Component

Parent Component

See it in action on codesandbox

Do you want to emit the event from the vue instance?

export default {
  functional: true,
  render(createElement, { listeners }) {
    return createElement(
      "button",
      {
        on: {
          click: event => {
            const emit_event = listeners.event_from_child;
            emit_event("Hello World!Is this the message we excpected? :/");
          }
        }
      },
      "Pass event to parent"
    );
  }
};

See it also a sandbox example here