@marketto/codice-fiscale-utils/src/classes/gender.class.ts

TS & JS utilities to handle Italian Codice Fiscale

import { DateDay } from "../date-utils/";
import GenderWeight from "../enums/gender-weight.enum";
import type Genders from "../types/genders.type";

class Gender {
	public static getDay(genderDay: number): DateDay | null {
		const plainDay = genderDay % GenderWeight.F;
		return plainDay > 0 && plainDay <= this.MAX_MONTH_DAY
			? (plainDay as DateDay)
			: null;
	}

	public static getGender(genderDay: number): Genders | null {
		return (
			this.toArray().find(
				(gender) =>
					genderDay >= GenderWeight[gender] &&
					genderDay <= GenderWeight[gender] + this.MAX_MONTH_DAY
			) || null
		);
	}

	public static genderizeDay(day: number, gender: Genders): number {
		return day + GenderWeight[gender];
	}

	public static toArray(): Genders[] {
		return ["M", "F"];
	}

	private static MAX_MONTH_DAY: number = 31;
}

export default Gender;