A simple class for Discord Timestamps

Timestamp.ts

export class Timestamp {
	/**
	 * Discord Timestamps
	 * @param timestamp The timestamp to convert to a readable string
	 * @requires [UNIX](https://en.wikipedia.org/wiki/Unix_time) timestamp in `milliseconds`
	 */
	public constructor(public readonly timestamp: number) {
		if (this.timestamp < 0) throw new Error('Timestamp must be a positive number');
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getRelativeTime();
	 * // => a few seconds ago
	 * ```
	 * @returns {string} The relative time from this timestamp to now
	 */
	public getRelativeTime(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:R>`;
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getShortDateTime();
	 * // => 5 March 2022 9:48 PM
	 * ```
	 * @returns {string} The date and time in the format of `Date Month Year HH:MM`
	 */
	public getShortDateTime(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:f>`;
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getLongDateTime();
	 * // => Saturday, 5 March 2022 9:48 PM
	 * ```
	 * @returns {string} The date and time in the format of `Day Date Month Year HH:MM`
	 */
	public getLongDateTime(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:F>`;
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getShortDate();
	 * // => 05/03/2022
	 * ```
	 * @returns {string} The date and time in the format of `DD/MM/YYYY`
	 */
	public getShortDate(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:d>`;
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getLongDate();
	 * // => 5 March 2022
	 * ```
	 * @returns {string} The date and time in the format of `Date Month Year`
	 */
	public getLongDate(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:D>`;
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getShortTime();
	 * // => 9:48 PM
	 * ```
	 * @returns {string} The date and time in the format of `HH:MM`
	 */
	public getShortTime(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:t>`;
	}

	/**
	 * @example
	 * ```ts
	 * const timestamp = new Timestamp(Date.now());
	 * timestamp.getLongTime();
	 * // => 9:48:38 PM
	 * ```
	 * @returns {string} The date and time in the format of `HH:MM:SS`
	 */
	public getLongTime(): string {
		return `<t:${Math.floor(this.timestamp / 1000)}:T>`;
	}
}