Function yMapMatch

src/persisters/persister-yjs/index.ts:160–186

(
  yMapOrParent: YMap<any>,
  idInParent: Id | undefined,
  obj: IdObj<any>,
  set: (yMap: YMap<any>, id: Id, value: any) => 1 | void,
)

};

const yMapMatch = (
  yMapOrParent: YMap<any>,
  idInParent: Id | undefined,
  obj: IdObj<any>,
  set: (yMap: YMap<any>, id: Id, value: any) => 1 | void,
): 1 | void => {
  const yMap = isUndefined(idInParent)
    ? yMapOrParent
    : (yMapOrParent.get(idInParent) ??
      yMapOrParent.set(idInParent, new YMap()));
  let changed: 1 | undefined;
  objMap(obj, (value, id) => {
    if (set(yMap, id, value)) {
      changed = 1;
    }
  });
  yMap.forEach((_: any, id: Id) => {
    if (!objHas(obj, id)) {
      yMap.delete(id);
      changed = 1;
    }
  });
  if (!isUndefined(idInParent) && !yMap.size) {
    yMapOrParent.delete(idInParent);
  }
  return changed;
};

export const createYjsPersister = ((
  store: Store,