import type { ArrayFormat, ParamsSerializer } from "./types.mjs";
/**
* Resolve a request input against an optional baseURL using the WHATWG URL
* parser. Never string-concats — that's the SSRF-prone path used by ofetch.
*
* `allowAbsoluteUrls` (default true) controls whether an absolute URL in
* `input` overrides `baseURL`. Set to false when the caller must be
* confined to baseURL's origin.
*
* `allowedProtocols` (default `['http','https']`) gates which URL schemes
* are permitted. Embedded runtimes (Capacitor, Tauri) can opt in to their
* custom schemes by extending the list.
*/
export type TrailingSlashPolicy = "preserve" | "strip" | "forbid";
export declare function resolveUrl(input: string, baseURL: string | undefined, allowAbsoluteUrls?: boolean, allowedProtocols?: readonly string[], trailingSlash?: TrailingSlashPolicy): string;
/**
* Append/merge a query record onto a URL string.
*
* - `undefined`/`null` values are skipped silently.
* - Arrays are serialized per `arrayFormat`:
*   - `'repeat'` (default): `?a=1&a=2`
*   - `'brackets'`: `?a[]=1&a[]=2`
*   - `'comma'`: `?a=1,2`
*   - `'indices'`: `?a[0]=1&a[1]=2`
* - `URLSearchParams` and `string` query values are merged as-is.
* - Custom `paramsSerializer` overrides the entire mechanism.
*/
export declare function appendQuery(url: string, query: Record<string, unknown> | URLSearchParams | string | undefined, arrayFormat?: ArrayFormat, paramsSerializer?: ParamsSerializer): string;