import { BN, L2OrderBook } from '@drift-labs/sdk';
export declare const COMMON_MATH: {
calculateSpreadBidAskMark: (l2: Pick<L2OrderBook, 'bids' | 'asks'>, oraclePrice?: BN) => {
bestBidPrice: BN;
bestAskPrice: BN;
markPrice: BN;
spreadPct: BN;
spreadQuote: BN;
};
};