A demonstration of using temporal-polyfill and temporal-zod in a Deno
TypeScript project, focusing on Temporal.Instant validation and coercion.
This project shows how temporal-zod schemas can accept either:
Temporal.Instant instance...and automatically coerce both to a Temporal.Instant object.
deno test| { | |
| "imports": { | |
| "temporal-polyfill": "npm:[email protected]", | |
| "temporal-zod": "npm:[email protected]", | |
| "zod": "npm:[email protected]" | |
| } | |
| } |
| import { describe, it, expect } from "vitest"; | |
| import { Temporal } from "temporal-polyfill"; | |
| import { z } from "zod"; | |
| import { zInstant } from "temporal-zod"; | |
| const EventSchema = z.object({ | |
| name: z.string(), | |
| timestamp: zInstant, | |
| }); | |
| type Event = z.infer<typeof EventSchema>; | |
| function createEventWithInstant(): Event { | |
| return EventSchema.parse({ | |
| name: "System Boot", | |
| timestamp: Temporal.Now.instant(), | |
| }); | |
| } | |
| function createEventWithISOString(): Event { | |
| return EventSchema.parse({ | |
| name: "User Login", | |
| timestamp: "2025-10-24T15:30:00Z", | |
| }); | |
| } | |
| describe("Event creation with Temporal.Instant", () => { | |
| it("should create event with Temporal.Instant", () => { | |
| const event = createEventWithInstant(); | |
| expect(event.name).toBe("System Boot"); | |
| expect(event.timestamp).toBeInstanceOf(Temporal.Instant); | |
| expect(event.timestamp.toString()).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?Z$/); | |
| }); | |
| it("should have correct type for timestamp", () => { | |
| const event = createEventWithInstant(); | |
| expect(event.timestamp.constructor.name).toBe("Instant"); | |
| }); | |
| }); | |
| describe("Event creation with ISO String", () => { | |
| it("should create event with ISO string and parse to Temporal.Instant", () => { | |
| const event = createEventWithISOString(); | |
| expect(event.name).toBe("User Login"); | |
| expect(event.timestamp).toBeInstanceOf(Temporal.Instant); | |
| expect(event.timestamp.toString()).toBe("2025-10-24T15:30:00Z"); | |
| }); | |
| it("should have correct type for timestamp", () => { | |
| const event = createEventWithISOString(); | |
| expect(event.timestamp.constructor.name).toBe("Instant"); | |
| }); | |
| }); |
A subset of https://gist.github.com/kevinmichaelchen/4f48dd7da6e453d6d73adfe49750340b