Function roundTrip

__tests__/index.test.ts:209–211

(err: Error)

describe("error serialization", () => {
  function roundTrip(err: Error): Error & Record<string, unknown> {
    return deserialize(serialize(err)) as unknown as Error & Record<string, unknown>;
  }

  it("preserves dynamically-attached own properties", () => {
    let err = new Error("the message") as Error & Record<string, unknown>;