TypeOrm delete Nested

nestedDelete.ts

import { getManager } from 'typeorm';
import * as dotProp from 'dot-prop';

export async function deleteNested (item: any) {
  const meta = getRemoveRelations(item.constructor, '');
  const res = await getManager().findOneOrFail(item.constructor, item, {
    relations: meta
  })
  await getManager().remove(res);
  for (const path of meta) {
    const prop = dotProp.get(res, path);
    await getManager().remove(prop);
  }
}

function getRemoveRelations (entity: any, path: string) {
  let delData = [];
  const meta = getManager().connection.getMetadata(entity)
  for (const relation of meta.ownRelations) {
    if (relation.isOneToOne) {
      const cpath = [...(path.length > 0 ? [path] : []), relation.propertyPath].join('.');
      delData = [...delData, cpath, ...getRemoveRelations(relation.type, cpath)]
    }
  }
  return delData;
}