Intl.NumberFormatOptions type restriction

lib Update Request

Configuration Check

My compilation target is ES2015 and my lib is [ "dom", "es5", "es6", "es2017", "scripthost", "es2015.collection", "es2015.promise" ].

Missing / Incorrect Definition

the properties of the Intl.NumberFormatOptions are very generic compared to other Options within the Intl scope. As for example the localeMatcher is only a string. For the Intl.DatetimeFormatOption it is more restrictive. Only ‘best fit’ and ‘lookup’ are allowed. Actually nearly every property of the Intl.NumberFormatOptions is not restricted as the MDN docs suggest. It would be nice to have type restrictions similar to other types within Intl.
I think this even applies to other Options-Definitions. for example: Intl.CollatorOptions

Sample Code

// lib.es5.d.ts
interface DateTimeFormatOptions {
    localeMatcher?: "best fit" | "lookup";
    weekday?: "long" | "short" | "narrow";
    era?: "long" | "short" | "narrow";
    year?: "numeric" | "2-digit";
    month?: "numeric" | "2-digit" | "long" | "short" | "narrow";
    day?: "numeric" | "2-digit";
    hour?: "numeric" | "2-digit";
    minute?: "numeric" | "2-digit";
    second?: "numeric" | "2-digit";
    timeZoneName?: "long" | "short";
    formatMatcher?: "best fit" | "basic";
    hour12?: boolean;
    timeZone?: string;
}

// lib.es5.d.ts
interface NumberFormatOptions {
    localeMatcher?: string;
    style?: string;
    currency?: string;
    currencyDisplay?: string;
    currencySign?: string;
    useGrouping?: boolean;
    minimumIntegerDigits?: number;
    minimumFractionDigits?: number;
    maximumFractionDigits?: number;
    minimumSignificantDigits?: number;
    maximumSignificantDigits?: number;
}

Documentation Link

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/NumberFormat

[orta]

In https://github.com/microsoft/TypeScript/pull/45647 NumberFormatOptions went to string literals for a lot of the parts in . Enough that I think this issue could be closed,

Re: the extra type explorations, nice work - I think these are probably a bit long for inclusion into the .d.ts files though

[DPK101]

Thanks for creating an issue, I am also looking for NumberformatOptions.compactDisplay and NumberformatOptions.notation

Please keep in sync with MDN docs,

btw, any other ways I can achieve showing number 324234252 as “$324M” in current version of my TypeScript “4.6.3” ? Any help would be appreciated. Thank you