import { Keychain } from '@vltpkg/keychain';
export type Token = `Bearer ${string}` | `Basic ${string}`;
/**
 * Normalize a registry URL into a stable key that preserves the
 * path prefix.  The result is `origin + pathname` with trailing
 * slashes stripped so that
 *   `https://r.io/luke/`  and  `https://r.io/luke`
 * both produce the same key.
 *
 * For plain-origin registries the result is identical to the old
 * `new URL(url).origin` behaviour (e.g. `https://registry.npmjs.org`).
 */
export declare const normalizeRegistryKey: (url: string) => string;
/**
 * Ensure a registry URL ends with `/` so that `new URL(path, base)`
 * appends under the full path instead of replacing the last segment.
 *
 *   registryBase('https://r.io/scope/name')
 *   // → 'https://r.io/scope/name/'
 */
export declare const registryBase: (url: string) => string;
export declare const keychains: Map<string, Keychain<Token>>;
/**
 * In-memory token store for OIDC-exchanged tokens.
 * These take precedence over env vars and keychain.
 */
export declare const runtimeTokens: Map<string, Token>;
export declare const setRuntimeToken: (registry: string, token: Token) => void;
export declare const clearRuntimeTokens: () => void;
export declare const getKC: (identity: string) => Keychain<Token>;
export declare const isToken: (t: any) => t is Token;
export declare const deleteToken: (registry: string, identity: string) => Promise<void>;
export declare const setToken: (registry: string, token: Token, identity: string) => Promise<void>;
export declare const getToken: (registry: string, identity: string) => Promise<Token | undefined>;
/**
 * Find the best matching token for a request URL by performing a
 * longest-prefix match against all known registry keys (runtime
 * tokens, env-var registries, and keychain entries).
 *
 * This is used by `RegistryClient.request()` which only has the
 * full request URL — not the configured registry URL that was used
 * to construct it.
 */
export declare const getTokenByURL: (requestUrl: string, identity: string) => Promise<Token | undefined>;