import { type RoundingDirection } from "../math/index.js";
import type { BigIntish } from "../types.js";
/** ERC-4626 virtual share and asset conversion helpers for MetaMorpho vaults. */
export declare namespace VaultUtils {
    /** Virtual assets added to ERC-4626 total assets in conversion formulas. */
    const VIRTUAL_ASSETS = 1n;
    /**
     * Returns the decimals offset between 18-decimal vault shares and an asset.
     *
     * @param decimals - The asset decimals.
     * @returns The non-negative decimals offset.
     * @example
     * ```ts
     * import { VaultUtils } from "@morpho-org/blue-sdk";
     *
     * const offset = VaultUtils.decimalsOffset(6n);
     * // offset === 12n
     * ```
     */
    function decimalsOffset(decimals: BigIntish): bigint;
    /**
     * Converts vault shares to underlying assets.
     *
     * @param shares - The amount of vault shares.
     * @param vault.totalAssets - The vault's total assets.
     * @param vault.totalSupply - The vault's total share supply.
     * @param vault.decimalsOffset - The vault's decimals offset.
     * @param rounding - Optional rounding direction. Defaults to `"Down"`.
     * @returns The equivalent amount of underlying assets.
     * @example
     * ```ts
     * import { VaultUtils } from "@morpho-org/blue-sdk";
     *
     * const assets = VaultUtils.toAssets(100n, { totalAssets: 1_000n, totalSupply: 100n, decimalsOffset: 0n });
     * // assets satisfies bigint
     * ```
     */
    function toAssets(shares: BigIntish, { totalAssets, totalSupply, decimalsOffset, }: {
        totalAssets: BigIntish;
        totalSupply: BigIntish;
        decimalsOffset: BigIntish;
    }, rounding?: RoundingDirection): bigint;
    /**
     * Converts underlying assets to vault shares.
     *
     * @param assets - The amount of underlying assets.
     * @param vault.totalAssets - The vault's total assets.
     * @param vault.totalSupply - The vault's total share supply.
     * @param vault.decimalsOffset - The vault's decimals offset.
     * @param rounding - Optional rounding direction. Defaults to `"Up"`.
     * @returns The equivalent amount of vault shares.
     * @example
     * ```ts
     * import { VaultUtils } from "@morpho-org/blue-sdk";
     *
     * const shares = VaultUtils.toShares(100n, { totalAssets: 1_000n, totalSupply: 100n, decimalsOffset: 0n });
     * // shares satisfies bigint
     * ```
     */
    function toShares(assets: BigIntish, { totalAssets, totalSupply, decimalsOffset, }: {
        totalAssets: BigIntish;
        totalSupply: BigIntish;
        decimalsOffset: BigIntish;
    }, rounding?: RoundingDirection): bigint;
}