/**
 * Thin typed wrapper around `fetch` that:
 *   • forwards an `AbortSignal` into the underlying request
 *   • serializes plain objects as JSON
 *   • distinguishes `AbortError` from network errors
 *   • normalizes non-2xx responses into an `HttpError` carrying the raw detail
 *
 * Application-level concerns (auth header injection, base URL, 401 handling)
 * live in the callers (`lib/api.ts`, `features/face-scan/api/face-client.ts`).
 */
export interface AbortableRequestInit extends Omit<RequestInit, "body"> {
    signal?: AbortSignal;
    body?: unknown;
}
export declare class HttpError extends Error {
    readonly status: number;
    readonly detail: unknown;
    constructor(status: number, message: string, detail?: unknown);
}
export declare function isAbortError(err: unknown): err is DOMException;
export declare function abortableRequest<T>(url: string, init?: AbortableRequestInit): Promise<T>;
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