text: describe("errors", () => {
      test("called without new", () => {
          expect(() => {
              Temporal.Instant();
          }).toThrowWithMessage(TypeError, "Temporal.Instant constructor must be called with 'new'");
      });
  
      test("argument must be coercible to bigint", () => {
          expect(() => {
              new Temporal.Instant(123);
          }).toThrowWithMessage(TypeError, "Cannot convert number to BigInt");
          expect(() => {
              new Temporal.Instant("foo");
          }).toThrowWithMessage(SyntaxError, "Invalid value for BigInt: foo");
      });
  });
  
  describe("normal behavior", () => {
      test("length is 1", () => {
          expect(Temporal.Instant).toHaveLength(1);
      });
  
      test("basic functionality", () => {
          const instant = new Temporal.Instant(123n);
          expect(instant.epochNanoseconds).toBe(123n);
          expect(typeof instant).toBe("object");
          expect(instant).toBeInstanceOf(Temporal.Instant);
          expect(Object.getPrototypeOf(instant)).toBe(Temporal.Instant.prototype);
      });
  });
  