avocado-old/packages/behavior/item/registry.js

import {invokeHookFlat} from '@avocado/core';

let _behaviorItems;

export function fromJSON({type, ...json}) {
  const items = behaviorItems();
  const Class = items[type];
  if (!Class) {
    throw new TypeError(`There is no class for the behavior item "${type}"`);
  }
  return (new Class()).fromJSON(json);
}

function behaviorItems() {
  if (!_behaviorItems) {
    _behaviorItems = {};
    const itemsLists = invokeHookFlat('avocadoBehaviorItems');
    for (let i = 0; i < itemsLists.length; i++) {
      _behaviorItems = {
        ..._behaviorItems,
        ...itemsLists[i],
      };
    }
  }
  return _behaviorItems;
}