import { Loader, TemplateSource } from "../../loader";
type RequestCache = "default" | "force-cache" | "no-cache" | "no-store" | "only-if-cached" | "reload";
type RequestCredentials = "include" | "omit" | "same-origin";
type RequestMode = "same-origin" | "cors" | "navigate" | "no-cors";
/**
 * Options for the `FetchLoader` template loader.
 */
export type FetchLoaderOptions = {
    /**
     * A string indicating requests will interact with the browser's
     * HTTP cache. Defaults to `"default"`.
     */
    cache?: RequestCache;
    /**
     * Include or exclude credentials when requesting template sources.
     * Defaults to `"same-origin"`.
     */
    credentials?: RequestCredentials;
    /**
     * Headers to include in each request.
     */
    headers?: Headers;
    /**
     * Request mode. Defaults to `"cors"`.
     */
    mode?: RequestMode;
};
/**
 * A template loader that fetches templates using the Fetch API.
 *
 * This is an async only loader. Expect an error when using this
 * loader with `getSourceSync()` and `Environment.getTemplateSync()`.
 *
 * This loader treats the response body as text that is the template
 * source code. You might need to write a custom loader to handle
 * JSON responses, for example.
 */
export declare class FetchLoader extends Loader {
    #private;
    readonly baseURL: string;
    /**
     * The `FetchLoader` constructor. Creates a new `FetchLoader`.
     *
     * @param baseURL - The base URL from which to fetch templates
     * from.
     * @param options - Loader options. Most of which are passed
     * through to the Fetch API's `Request` constructor.
     */
    constructor(baseURL: string, options?: FetchLoaderOptions);
    getSource(name: string): Promise<TemplateSource>;
    getSourceSync(): TemplateSource;
}
export {};