Method _modifyValueBy

packages/main/src/TimePicker.ts:939–955

(amount: number, unit: string)

	}

	_modifyValueBy(amount: number, unit: string) {
		const date = this.getValueFormat().parse(this._effectiveValue) as Date;
		if (!date) {
			return;
		}
		if (unit === "hour") {
			date.setHours(date.getHours() + amount);
		} else if (unit === "minute") {
			date.setMinutes(date.getMinutes() + amount);
		} else if (unit === "second") {
			date.setSeconds(date.getSeconds() + amount);
		}

		const newValue = this.formatValue(date);

		this._updateValueAndFireEvents(newValue, true, ["change", "value-changed"]);
	}

	/**
	 * The listener for this event can't be passive as it calls preventDefault()