export declare const MAX_REDIRECT_ORIGIN_COUNT = 64;
export declare const MAX_REDIRECT_ORIGIN_LENGTH = 2048;
export declare const MAX_REDIRECT_ORIGIN_LIST_LENGTH = 16384;
export declare const MAX_REDIRECT_DESTINATION_LENGTH = 8192;
export interface RedirectPolicy {
    allowedOrigins: readonly string[];
}
/** Return the serialized origin only when the input is a canonical HTTP(S) origin. */
export declare function parseCanonicalRedirectOrigin(value: string): string | null;
/** Return whether every configured origin is canonical, unique, and bounded. */
export declare function isValidRedirectOriginList(origins: readonly string[]): boolean;
/**
 * Validate one project redirect against an opt-in origin policy.
 * An omitted policy preserves the legacy behavior. A configured policy allows
 * HTTP(S) destinations on the request origin plus exact allowlisted origins.
 */
export declare function isRedirectDestinationAllowed(destination: string, requestUrl: string | null, policy: RedirectPolicy | null | undefined): boolean;
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