export interface PluralStringProxy {
    /**
     * Obtains a pluralized string for |messageName| with |itemCount| items.
     * @param messageName The name of the message.
     * @param itemCount The number of items.
     * @return Promise resolved with the appropriate plural string for
     *     |messageName| with |itemCount| items.
     */
    getPluralString(messageName: string, itemCount: number): Promise<string>;
    /**
     * Fetches both plural strings, concatenated to one string with a comma.
     * @param messageName1 The name of the first message.
     * @param itemCount1 The number of items in the first message.
     * @param messageName2 The name of the second message.
     * @param itemCount2 The number of items in the second message.
     * @return Promise resolved with the appropriate plural
     *     strings for both messages, concatenated with a comma+whitespace in
     *     between them.
     */
    getPluralStringTupleWithComma(messageName1: string, itemCount1: number, messageName2: string, itemCount2: number): Promise<string>;
    /**
     * Fetches both plural strings, concatenated to one string with periods.
     * @param messageName1 The name of the first message.
     * @param itemCount1 The number of items in the first message.
     * @param messageName2 The name of the second message.
     * @param itemCount2 The number of items in the second message.
     * @return Promise resolved with the appropriate plural
     *     strings for both messages, concatenated with a period+whitespace after
     *     the first message, and a period after the second message.
     */
    getPluralStringTupleWithPeriods(messageName1: string, itemCount1: number, messageName2: string, itemCount2: number): Promise<string>;
}
export declare class PluralStringProxyImpl implements PluralStringProxy {
    getPluralString(messageName: string, itemCount: number): Promise<string>;
    getPluralStringTupleWithComma(messageName1: string, itemCount1: number, messageName2: string, itemCount2: number): Promise<string>;
    getPluralStringTupleWithPeriods(messageName1: string, itemCount1: number, messageName2: string, itemCount2: number): Promise<string>;
    static getInstance(): PluralStringProxy;
    static setInstance(obj: PluralStringProxy): void;
}
