isDate
import { isDate } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// For a valid date:
const result = isDate(new Date())
//=> true
@example
// For an invalid date:
const result = isDate(new Date(NaN))
//=> true
@example
// For some value:
const result = isDate('2014-02-31')
//=> false
@example
// For an object:
const result = isDate({})
//=> false
function isDate(value: unknown): value is Date;