/**
 * Canonicalize loopback redirect URIs so 127.0.0.1 and localhost compare equal.
 * Non-loopback URIs are returned unchanged.
 */
export declare function normalizeLoopbackRedirectUri(uri: string): string;
/** True when requested matches any registered URI (exact or loopback-equivalent). */
export declare function redirectUriMatchesRegistered(registered: string[], requested: string): boolean;
/** True when two redirect URIs are equivalent for OAuth token exchange. */
export declare function redirectUrisEquivalent(stored: string, requested: string): boolean;
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