Function createLocaleMatcher

Returns Readonly<
    {
        bestMatchFor: (locale: string) => string;
        bestMatchForAcceptLanguage: (
            acceptLanguage: string | null | undefined,
        ) => string;
        bestMatchForLanguageRanges: (
            ranges: Iterable<Readonly<{ range: string; weight?: number }>>,
        ) => string;
        matchFor: (
            locale: string,
        ) => Readonly<
            {
                consideredLocales: readonly string[];
                effectiveWeight: number
                | null;
                fallbackLocale: string;
                isMatch: boolean;
                languageRange: string | WeightedLanguageRange | null;
                locale: string | null;
                matchType:
                    | "none"
                    | "exact"
                    | "canonical"
                    | "cldr-fallback"
                    | "likely-subtag"
                    | "extended-range"
                    | "primary-language"
                    | "wildcard";
                requestedLanguageRanges: readonly WeightedLanguageRange[];
            },
        >;
        matchForLanguageRanges: (
            ranges: Iterable<Readonly<{ range: string; weight?: number }>>,
        ) => LocaleMatchResult;
    },
>