import type { BigIntish } from "../types.js";
import { type RoundingDirection } from "./MathLib.js";
/**
 * JS implementation of {@link https://github.com/morpho-org/morpho-blue/blob/main/src/libraries/SharesMathLib.sol SharesMathLib} used by Morpho Blue
 * & MetaMorpho (via {@link https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/extensions/ERC4626.sol ERC4626}).
 */
export declare namespace SharesMath {
    /** Virtual shares added to Morpho Blue and ERC-4626 share conversions. */
    const VIRTUAL_SHARES = 1000000n;
    /** Virtual assets added to Morpho Blue and ERC-4626 asset conversions. */
    const VIRTUAL_ASSETS = 1n;
    /**
     * Converts shares to assets using Morpho virtual shares and assets.
     *
     * @param shares - The amount of shares.
     * @param totalAssets - The total assets before conversion.
     * @param totalShares - The total shares before conversion.
     * @param rounding - The rounding direction.
     * @returns The equivalent amount of assets.
     * @example
     * ```ts
     * import { SharesMath } from "@morpho-org/blue-sdk";
     *
     * const assets = SharesMath.toAssets(100n, 1_000n, 100n, "Down");
     * // assets satisfies bigint
     * ```
     */
    function toAssets(shares: BigIntish, totalAssets: BigIntish, totalShares: BigIntish, rounding: RoundingDirection): bigint;
    /**
     * Converts assets to shares using Morpho virtual shares and assets.
     *
     * @param assets - The amount of assets.
     * @param totalAssets - The total assets before conversion.
     * @param totalShares - The total shares before conversion.
     * @param rounding - The rounding direction.
     * @returns The equivalent amount of shares.
     * @example
     * ```ts
     * import { SharesMath } from "@morpho-org/blue-sdk";
     *
     * const shares = SharesMath.toShares(100n, 1_000n, 100n, "Up");
     * // shares satisfies bigint
     * ```
     */
    function toShares(assets: BigIntish, totalAssets: BigIntish, totalShares: BigIntish, rounding: RoundingDirection): bigint;
}