import { BackendModule, Services, InitOptions, ReadCallback } from 'i18next';
import { PathLike } from 'node:fs';

declare class Backend<T = object> implements BackendModule<Backend.Options<T>> {
    readonly type = "backend";
    private paths;
    private i18nextOptions;
    init(_: Services, backendOptions: Backend.Options<T>, i18nextOptions: InitOptions): void;
    read(language: string, namespace: string, callback: ReadCallback): void;
    private readPaths;
    private readPathsSync;
    static readonly type = "backend";
    private static readPath;
    private static readPathSync;
    private static handleResults;
    private static resolvePath;
}
declare namespace Backend {
    type Options<T = object> = T & {
        paths: readonly PathResolvable[];
    };
}
type PathResolvable = string | URL | ((language: string, namespace: string) => PathLike);
declare module 'i18next' {
    interface InitOptions<T = object> {
        backend?: Backend.Options<T> | undefined;
    }
}

export { Backend, type PathResolvable };