import { type PluralRulesData, type PluralRulesInternal } from "@formatjs/ecma402-abstract";
export declare function InitializePluralRules(pl: Intl.PluralRules, locales: string | string[] | undefined, options: Intl.PluralRulesOptions | undefined, { availableLocales, relevantExtensionKeys, localeData, getDefaultLocale, getInternalSlots }: {
	availableLocales: Set<string>;
	relevantExtensionKeys: string[];
	localeData: Record<string, PluralRulesData | undefined>;
	getDefaultLocale(): string;
	getInternalSlots(pl: Intl.PluralRules): PluralRulesInternal;
}): Intl.PluralRules;