import type { ExchangeAdapter } from "../exchanges/index.js";
/**
 * Calculate the exact same size for both legs of an arb position,
 * respecting both exchanges' minimum order and size precision constraints.
 *
 * @returns size string that works for both exchanges, or null if not viable
 */
export declare function computeMatchedSize(sizeUsd: number, price: number, longExchange: string, shortExchange: string, opts?: {
    longSizeDecimals?: number;
    shortSizeDecimals?: number;
    lotSize?: number;
}): {
    size: string;
    notional: number;
} | null;
/**
 * Compute matched size for spot-perp arb.
 * Uses spot exchange's size decimals for the spot leg.
 */
export declare function computeSpotPerpMatchedSize(sizeUsd: number, price: number, spotExchange: string, perpExchange: string, spotSizeDecimals?: number, perpSizeDecimals?: number): {
    size: string;
    notional: number;
} | null;
/**
 * After both legs are submitted, verify actual fills match.
 * If there's a size mismatch, place a correction order on the larger side.
 *
 * @returns the corrected size, or null if already matched
 */
export declare function reconcileArbFills(longAdapter: ExchangeAdapter, shortAdapter: ExchangeAdapter, symbol: string, log?: (msg: string) => void): Promise<{
    matched: boolean;
    longSize: number;
    shortSize: number;
    correction?: string;
}>;