isBeforeDate

Signature

isBeforeDate(value1: string, value2: string): boolean

import { isBeforeDate } from "@northguild/gmt/plain/compare";

Return true when value1 is strictly before value2 for PlainDate values.

• Uses Temporal.PlainDate.compare to compare dates.
• Returns false if either input is invalid.

Parameters

Parameter	Type	Description
value1	string	ISO PlainDate string for the first value
value2	string	ISO PlainDate string for the second value

Returns

boolean indicating whether value1 < value2

Examples

isBeforeDate("2024-02-28", "2024-02-29") // true
isBeforeDate("2024-02-29", "2024-02-29") // false
isBeforeDate("2024-02-29", "2024-02-28") // false
isBeforeDate("invalid", "2024-02-29") // false
isBeforeDate("2024-02-29", "invalid") // false

Source

plain/compare/isBeforeDate.ts