Agree on using either self or instance to refer to this in Blaze Template

[nchenbang]

Template.someTemplate.onCreated(() =>  {
  const instance = Template.instance();
});
Template.someTemplate.helpers({
  someHelper() {
  const instance = Template.instance();
  }
});
Template.someTemplate.onRendered(() =>  {
  const instance = Template.instance();
});
Template.someTemplate.events({
  'click .some-button'(event, instance) {

  }
});
Template.someTemplate.onDestroyed(() =>  {
  const instance = Template.instance();
});

Something like this will do. I personally prefer to use instance over self but it won't matter much as long as we don't use this which is really confusing and makes us hard to reason about data context.