export interface HttpRequestErrorOptions extends ErrorOptions {
    response?: Response;
    url?: string;
    requestUrl?: string;
    statusCode?: number;
    statusText?: string;
    responseBody?: string;
}
/**
 * The error that is thrown to indicate a failed HTTP request, usually indicated by status code.
 */
export declare class HttpRequestError extends Error {
    name: string;
    readonly response?: Response;
    readonly url?: string;
    readonly requestUrl?: string;
    readonly statusCode?: number;
    readonly statusText?: string;
    readonly responseBody?: string;
    constructor(message?: string, options?: HttpRequestErrorOptions);
    static fromResponse(response: Response, options?: HttpRequestErrorOptions): Promise<HttpRequestError>;
}
/**
 * Ensures the given HTTP response has a successful status code.
 * @throws {HttpRequestError} `response.ok` is `false`, i.e., `response.status` is outside the range of 200 ~ 299.
 * @see {@link Response.ok}
 */
export declare function ensureResponseOK(response: Response): Promise<void>;
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