import "reflect-metadata" import { createTestingConnections, closeTestingConnections, reloadTestingDatabases, } from "../../utils/test-utils" import { DataSource } from "../../../src/data-source/DataSource" import { Post } from "./entity/Post" describe("github issues > #2065 TypeError: Cannot convert object to primitive value", () => { let connections: DataSource[] before( async () => (connections = await createTestingConnections({ entities: [__dirname + "/entity/*{.js,.ts}"], schemaCreate: true, dropSchema: true, })), ) beforeEach(() => reloadTestingDatabases(connections)) after(() => closeTestingConnections(connections)) it("should save an entity created with Object.create(null)", () => Promise.all( connections.map(async (connection) => { const post = Object.create(null) as Post post.id = 1 post.title = "Hello Post" await connection.manager.save(Post, post) }), )) })