import type { S3Client } from "@aws-sdk/client-s3";
import type { Adapter } from "../index.js";
export interface VultrAdapterOptions {
    /** Vultr bucket name. The adapter scopes all operations to it. */
    bucket: string;
    /**
     * Vultr Object Storage region code, e.g. `"ewr"` (New Jersey),
     * `"sjc"` (Silicon Valley), `"ams"` (Amsterdam), `"blr"` (Bangalore),
     * `"del"` (Delhi), `"sgp"` (Singapore), `"lux"` (Luxembourg). Drives the
     * endpoint host (`https://<region>.vultrobjects.com`); there's no env-var
     * fallback. Doubles as the SigV4 region.
     */
    region: string;
    /**
     * Override the Vultr endpoint. When unset, defaults to
     * `https://${region}.vultrobjects.com`. Vultr routes by Host header —
     * the SDK prepends the bucket subdomain for virtual-hosted style.
     */
    endpoint?: string;
    /**
     * Static access key ID. Falls back to `VULTR_ACCESS_KEY_ID`; required if
     * that env var isn't set.
     */
    accessKeyId?: string;
    /**
     * Static secret access key. Falls back to `VULTR_SECRET_ACCESS_KEY`;
     * required if that env var isn't set.
     */
    secretAccessKey?: string;
    /**
     * Use path-style addressing (`/<bucket>/<key>`) rather than virtual-hosted
     * style. Defaults to `false` — virtual-hosted is canonical for Vultr.
     */
    forcePathStyle?: boolean;
    /**
     * Origin used to build URLs from `url()`. When set, `url(key)` returns
     * `${publicBaseUrl}/${key}` and skips signing. For buckets with public
     * ACL, the natural value is
     * `https://${bucket}.${region}.vultrobjects.com`; a custom CNAME fronting
     * the bucket also works. Vultr has no built-in CDN. When unset, `url()`
     * falls back to a presigned GetObject (default expiry: 1 hour).
     */
    publicBaseUrl?: string;
    /**
     * Default expiry, in seconds, for the presigned URLs returned by `url()`
     * when `publicBaseUrl` is not set. Defaults to 3600 (1 hour).
     */
    defaultUrlExpiresIn?: number;
}
export type VultrAdapter = Adapter<S3Client>;
export declare const vultr: (opts: VultrAdapterOptions) => VultrAdapter;
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