Treaty converting string with iso date to Date object (Elysia 1.4)

[fabriciovergara]

const api = new Elysia()
  .get("/api/v1/today", ({ request }) => { 
         return {  today: "2025-10-09T00:00:00.000Z" } 
   }, {
    response: t.Object({ today: t.String() }),
  })

const t = treaty<typeof api>()
const result = t.api.v1.today.get()

const today = result.data.today 

// 1.3.X : today is string 
// 1.4.X : today is Date

There's a way to make sure that it will respect the type described in the response?
We use json files to describe the expected response and assert with expect(actual).toMatchObject(expected);, but since it returns a Date object, the assertion fails.

[Lilja]

See this issue