/** @import {PureData} from '@endo/marshal' */
/** @typedef {[normalizedCollateralization: number, vaultId: VaultId]} CompositeKey */
/**
 * @param {PureData} key
 * @returns {string}
 */
export const encodeData: (p: Passable) => string;
/**
 * @param {string} encoded
 * @returns {PureData}
 */
export const decodeData: (encoded: string, skip?: number) => Passable;
export function toVaultKey(normalizedDebt: NormalizedDebt, collateral: Amount<"nat">, vaultId: VaultId): string;
export function fromVaultKey(key: string): [normalizedCollateralization: number, vaultId: VaultId];
export function normalizedCollRatio(quote: PriceQuote, compoundedInterest: Ratio, margin: Ratio): number;
export function normalizedCollRatioKey(quote: PriceQuote, compoundedInterest: Ratio, margin: Ratio): string;
export type CompositeKey = [normalizedCollateralization: number, vaultId: VaultId];
export type NormalizedDebt = Amount<"nat"> & {
    normalized: true;
};
export type ActualDebt = Amount<"nat"> & {
    normalized: false;
};
import type { PriceQuote } from '@agoric/zoe/tools/types.js';
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