test("reassignment to const", () => { const constantValue = 1; expect(() => { constantValue = 2; }).toThrowWithMessage(TypeError, "Invalid assignment to const variable"); expect(constantValue).toBe(1); }); test("const creation in inner scope", () => { const constantValue = 1; do { const constantValue = 2; expect(constantValue).toBe(2); } while (false); expect(constantValue).toBe(1); });