/**
 * Helpers to serve a Trifid instance under a subpath (e.g. `/SUBPATH`) instead
 * of at the root of a domain.
 */
/**
 * Normalize a configured subpath to its canonical form.
 *
 * The canonical form always starts and ends with a slash, so that templates can
 * build URLs by simple interpolation (`{{subpath}}static/core/style.css`) and
 * the default value is `/`, which keeps the historical behaviour.
 *
 * @param value The raw value coming from the configuration.
 * @returns The normalized subpath, `/` when nothing usable was configured.
 */
export declare const normalizeSubpath: (value: unknown) => string;
/**
 * Prefix a path with the configured subpath.
 *
 * Used for both route URLs and static file prefixes. With the default subpath
 * (`/`) the path is returned unchanged, so nothing moves for existing setups.
 *
 * @param subpath The normalized subpath.
 * @param path The path to prefix.
 * @returns The path, prefixed with the subpath.
 */
export declare const joinSubpath: (subpath: string, path: string) => string;
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