import type { AuthFlowParams } from './request-utils.js';
export interface PlatformRedirectOptions {
    baseUrl?: string | null;
    signInUrl?: string | null;
    code: string;
    state: string;
    params?: AuthFlowParams;
    defaultSource?: string;
    allowedRedirectOrigins?: string[];
}
export interface PlatformEntryOptions {
    authUrl: string;
    params?: AuthFlowParams;
    defaultSource?: string;
    allowedRedirectOrigins?: string[];
}
/**
 * Sanitizes redirect parameters to avoid open redirects.
 */
export declare function sanitizeRedirectParam(value: string | undefined, allowedRedirectOrigins: string[] | undefined): string | undefined;
/**
 * Builds a Platform redirect URL with code/state and safe params.
 */
export declare function buildPlatformRedirectUrl(options: PlatformRedirectOptions): URL | null;
/**
 * Builds a Platform entry URL (sign-in or sign-up) with safe params.
 */
export declare function buildPlatformEntryUrl(options: PlatformEntryOptions): URL;
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