/**
 * @file packages/expo-squircle/src/core/params.ts
 * @description Helpers for validating and normalizing squircle component props.
 *
 * Exports
 *   - normalizeSquircleParams
 *   - normalizeSmoothFactor
 *   - clamp
 *   - shrinkRadius
 *
 * @license MIT. Internal helper for expo-squircle.
 * @author Doğu Abaris <abaris@null.net>
 */
import type { NormalizedRoundedSurfaceOptions, SquircleParamsProp } from './types';
/**
 * Validates and sanitizes the incoming squircle props so downstream layout math
 * can assume required values are present and non-negative.
 *
 * @param params Raw props passed to the ExpoSquircle component.
 * @returns NormalizedRoundedSurfaceOptions Normalized values ready for rendering.
 * @throws Error when the params object or its `smoothFactor` field are missing.
 */
export declare function normalizeSquircleParams(params: SquircleParamsProp): NormalizedRoundedSurfaceOptions;
/**
 * Validates and clamps a smoothing value to the [0, 1] range.
 *
 * @param value Value to validate (may be undefined).
 * @returns number Clamped smoothing factor between 0 and 1.
 * @throws Error when the input is not a finite number.
 */
export declare function normalizeSmoothFactor(value: number | undefined): number;
/**
 * Clamps a numeric value between the provided range.
 *
 * @param value Number to clamp.
 * @param min Minimal allowed value.
 * @param max Maximum allowed value.
 * @returns number Value coerced into the [min, max] range.
 */
export declare function clamp(value: number, min: number, max: number): number;
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