Internationalization API

I didn't know browser's Internacionalization API is so complete: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl

I had to use the DateTimeFormat API and I had troubles to find the valid option values. Here they go:

{
  weekday: 'narrow' | 'short' | 'long',
  era: 'narrow' | 'short' | 'long',
  year: 'numeric' | '2-digit',
  month: 'numeric' | '2-digit' | 'narrow' | 'short' | 'long',
  day: 'numeric' | '2-digit',
  hour: 'numeric' | '2-digit',
  minute: 'numeric' | '2-digit',
  second: 'numeric' | '2-digit',
  timeZoneName: 'short' | 'long',

  // Time zone to express it in
  timeZone: 'Asia/Shanghai',
  // Force 12-hour or 24-hour
  hour12: true | false,

  // Rarely-used options
  hourCycle: 'h11' | 'h12' | 'h23' | 'h24',
  formatMatcher: 'basic' | 'best fit'
}

Notice that when a value is not provided, is not shown. For example:

formatDate(Date.now(), { day: "2-digit", month: "short" });

Produces: Abr 14 (without year)

Source: https://devhints.io/wip/intl-datetime