import { VerticalPosition, FixedPositionOptions } from "./types";
import { YCoordConfig } from "./getCoord";
/**
 * @private
 */
interface YPosition {
    top: number;
    bottom?: number;
    actualY: VerticalPosition;
}
/**
 * @private
 */
export interface FixConfig extends YCoordConfig {
    vhMargin: number;
    screenBottom: number;
    preventOverlap: boolean;
    disableSwapping: boolean;
    disableVHBounds: boolean;
}
/**
 * @private
 */
interface Options extends Required<Pick<FixedPositionOptions, "yMargin" | "vhMargin" | "preventOverlap" | "disableSwapping" | "disableVHBounds">> {
    y: VerticalPosition;
    vh: number;
    initialY?: number;
    elHeight: number;
    containerRect: DOMRect | ClientRect;
}
/**
 * Attempts to position the fixed element so that it will appear completely
 * above the container element but also within the viewport boundaries. When
 * swapping is enabled, it will attempt to swap to the below position if it
 * can't fit within the viewport above the container element. If it can't fit in
 * the viewport even after being swapped below or swapping is disabled, it will
 * be positioned to the top viewport boundary.
 *
 * @private
 */
export declare function createAnchoredAbove(config: FixConfig): YPosition;
/**
 * Attempts to position the fixed element so that it will appear fixed to the
 * top of the container element but also within the viewport boundaries. When
 * swapping is enabled, it will attempt to swap to the bottom position if it
 * can't fit within the viewport. If it can't fit in the viewport even after
 * being swapped to the bottom position or swapping is disabled, it will be
 * positioned to the top viewport boundary.
 *
 * @private
 */
export declare function createAnchoredTop(config: FixConfig): YPosition;
/**
 * Attempts to position the fixed element so that it will appear at the center
 * of the container element but also within the viewport boundaries. If the
 * entered element can't fit within the viewport, it'll update the top value
 * to either be the vhMargin or position to the screen bottom boundary
 *
 * @private
 */
export declare function createAnchoredCenter(config: FixConfig): YPosition;
/**
 * Attempts to position the fixed element so that it will appear fixed to the
 * bottom of the container element but also within the viewport boundaries. When
 * swapping is enabled, it will attempt to swap to the top position if it can't
 * fit within the viewport. If it can't fit in the viewport even after being
 * swapped to the top position or swapping is disabled, it will be positioned to
 * the bottom viewport boundary.
 *
 * @private
 */
export declare function createAnchoredBottom(config: FixConfig): YPosition;
/**
 * Attempts to position the fixed element so that it will appear completely
 * below the container element but also within the viewport boundaries. When
 * swapping is enabled, it will attempt to swap to the above position if it
 * can't fit within the viewport below the container element. If it can't fit in
 * the viewport even after being swapped above or swapping is disabled, it will
 * be positioned to the bottom viewport boundary.
 *
 * @private
 */
export declare function createAnchoredBelow(config: FixConfig): YPosition;
/**
 * Creates the vertical position for a fixed element with the provided options.
 *
 * @private
 */
export default function createVerticalPosition({ y, vh, vhMargin, yMargin, elHeight, initialY, containerRect, disableSwapping, preventOverlap, disableVHBounds, }: Options): YPosition;
export {};