/**
 * Typed failure for the `/outpost/*` control plane, plus the structural
 * decoders for the two error envelopes hq-pro sends that are NOT plain
 * `{ error | message }` bodies.
 *
 * Portable: imports only sibling type declarations. Safe in a Next.js server
 * context.
 */
import type { BillingErrorPayload, BillingSetupAction, OutpostCappedPayload } from "./types.js";
/**
 * A non-2xx from the `/outpost/*` control plane.
 *
 * `step` is preserved verbatim because callers branch on it: the destroy
 * route's `teardown-incomplete` means "retry", not "failed", and
 * `platform-unsupported` means "this box is Lightsail, use the SSH path".
 */
export declare class OutpostHttpError extends Error {
    status: number;
    step?: string;
    /** hq-pro's billing envelope on a `402 billing_required` provision block. */
    billing?: BillingErrorPayload;
    /** hq-pro's cap envelope on a `409` provision block. */
    capped?: OutpostCappedPayload;
    constructor(status: number, message: string, step?: string, billing?: BillingErrorPayload, capped?: OutpostCappedPayload);
}
/** Decode hq-pro's `{ capped, limit, outposts }` cap envelope, if present. */
export declare function parseCappedPayload(body: unknown): OutpostCappedPayload | undefined;
/** Narrow an unknown value to a usable `BillingSetupAction`. */
export declare function isBillingSetupAction(value: unknown): value is BillingSetupAction;
/** Pull a `BillingErrorPayload` out of a decoded hq-pro error body, if present. */
export declare function parseBillingPayload(body: unknown): BillingErrorPayload | undefined;
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