/** An object representing an HTTP `Accept-Language` header directive. */
type Directive = {
    /** The ISO 639-1 alpha-2 language code. */
    languageCode: string;
    /** The ISO 3166-1 alpha-2 country code. */
    countryCode?: string;
    /** The locale identifier using the BCP 47 `language`-`country` in case-normalized format. */
    locale?: string;
    /** The quality factor (default is 1; values can range from 0 to 1 with up to 3 decimals). */
    quality: number;
};
/** A directive object including the position in its HTTP header. */
type IndexedDirective = Directive & {
    /** This is the position of the directive in the HTTP header. */
    headerPosition: number;
};
/** A directive object including the position in its HTTP header and the locale. */
export type IndexedDirectiveWithLocale = IndexedDirective & {
    locale: string;
};
/**
 * Get a list of directives from an HTTP `Accept-Language` header.
 *
 * @param acceptLanguageHeader - The value of an HTTP request `Accept-Language` header (also known as a "language priority list").
 *
 * @returns A list of `IndexedDirective` objects sorted by quality and header position.
 */
export declare const getDirectives: (acceptLanguageHeader: string) => IndexedDirective[];
export {};