import type { InAppBrowserOptions } from '../types';
/**
 * Remove `undefined`/`null` entries and sanitize nested values before the
 * options object is bridged to the native hybrid module.
 *
 * Fast paths (zero allocations):
 * - When no options are supplied, returns `undefined`.
 * - When every field is already clean, returns the original `options` reference
 *   so consumers passing a stable object incur no GC churn per call.
 */
export declare const normalizeOptions: (options?: InAppBrowserOptions) => InAppBrowserOptions | undefined;
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