foundryvtt-reve-de-dragon/dev-notes.md

Actor notes

The Actor#getData default implementation gives you the following for use in sheet rendering:

  actor -> the Actor instance
  data -> a cloned copy of Actor#data
  items -> a cloned copy of Actor#data#items
  effects -> a cloned copy of Actor#data#effects

if all you need is a safe copy of Actor#data, you'll be much better off by simply defining your own function and avoiding all the wasted work that the parent class does which will slow down your sheet

getData(options) {
  return {
    data: foundry.utils.deepClone(this.object.data)
  }
}

who knows, maybe you don't even need to copy your actor data, skip the copy and it's even faster:

getData(options) {
  return {
    data: this.object.data
  }
}

Atropos19/02/2021 There are two recommended ways to create owned items in 0.8.0:

await Item.create(itemData, {parent: actor});
await actor.createEmbeddedDocuments("Item", itemDataArray);

You can update an embedded item in one of two ways:

//Method 1:

const item = actor.items.get(itemId);
item.update(data);

//Method 2:
actor.updateEmbeddedDocuments("Item", [{_id: itemId, ...}]);