add DateStyle and TimeStyle to DateTimeFormatOptions

[nstringham]

lib Update Request

Configuration Check

My compilation target is es2017 and my lib is ["dom"].

Missing / Incorrect Definition

DateTimeFormatOptions.DateStyle
DateTimeFormatOptions.TimeStyle

Sample Code

const date = new Date();
date.toLocaleString(undefined, { dateStyle: "long", timeStyle: "short" });

Documentation Link

TC39 spec: https://tc39.es/ecma402/#sec-intl-datetimeformat-constructor

MDN docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat#parameters

Note:

this is a duplicate of #38266 but formated as a lib Update Request

this is not a duplicate of #35865

[nstringham]

changing target to es2020 fixes this