source: node_modules/@swagger-api/apidom-core/es/identity/index.mjs

import { StringElement } from 'minim';
import stampit from 'stampit';
import ShortUniqueId from 'short-unique-id';
import ElementIdentityError from "./errors/ElementIdentityError.mjs";
import { isElement, isStringElement } from "../predicates/index.mjs";
// @TODO(oliwia.rogala@smartbear.com): transforming this stamp to class will break backward compatibility
export const IdentityManager = stampit({
  props: {
    uuid: null,
    length: null,
    identityMap: null
  },
  init({
    length = 6
  } = {}) {
    this.length = 6;
    this.uuid = new ShortUniqueId({
      length
    });
    this.identityMap = new WeakMap();
  },
  methods: {
    identify(element) {
      if (!isElement(element)) {
        throw new ElementIdentityError('Cannot not identify the element. `element` is neither structurally compatible nor a subclass of an Element class.', {
          value: element
        });
      }

      // use already assigned identity
      if (element.meta.hasKey('id') && isStringElement(element.meta.id) && !element.meta.id.equals('')) {
        return element.id;
      }

      // assign identity in immutable way
      if (this.identityMap.has(element)) {
        return this.identityMap.get(element);
      }

      // return element identity
      const id = new StringElement(this.generateId());
      this.identityMap.set(element, id);
      return id;
    },
    forget(element) {
      if (this.identityMap.has(element)) {
        this.identityMap.delete(element);
        return true;
      }
      return false;
    },
    generateId() {
      return this.uuid.randomUUID();
    }
  }
});
export const defaultIdentityManager = IdentityManager({
  length: 6
});