#fromIndex

Creates a Month from a raw month index, where index = year * 12 + month - 1. It is the inverse of the index property and is mainly useful for serialization or low-level interop.

import { Month } from "@teakit/month";

Month.fromIndex(24_300).toString(); // "2025-01"

const month = Month.from("2025-07");
Month.fromIndex(month.index).toString(); // "2025-07"

#API Reference

#Signature

Month.fromIndex(index: number): MonthInstance;

#Parameters

#Returns

Returns a new Month for the given index. Indices outside [0, 119999] (0000-01–9999-12) saturate to the boundary month.

#Throws

• Throws when index is not a safe integer.

#Agent Contract

#Agent Notes

• Prefer from for ordinary creation; use fromIndex only when you already hold a month index (e.g. from month.index).
• A fromIndex value has no day anchor, so day-precision output is unavailable.