effect-io-ai

Package: effect
Module: Predicate

Predicate.isDate

A refinement that checks if a value is a Date object.

Example

import * as assert from "node:assert"
import { isDate } from "effect/Predicate"

assert.strictEqual(isDate(new Date()), true)

assert.strictEqual(isDate(Date.now()), false) // `Date.now()` returns a number
assert.strictEqual(isDate("2023-01-01"), false)

Signature

declare const isDate: (input: unknown) => input is Date

Source

Since v2.0.0