@dojima-wallet/connection/lib/swap_utils/slippage.ts

Initialise and connection for layer 1&2 blockchain

import { PoolData } from "./types";
import { calcSwapOutput } from "./output";

/** Calculate swap output with slippage */

// Calculate swap slippage
export const calcSwapSlip = (
  inputAmount: number,
  pool: PoolData,
  toDoj: boolean
): number => {
  // formula: (inputAmount) / (inputAmount + inputBalance)
  const inputBalance = toDoj
    ? Number(pool.balance_asset)
    : Number(pool.balance_doj); // input is asset if toRune
  const result = inputAmount / (inputAmount + inputBalance);
  return result;
};

// Calculate swap slippage for double swap
export const calcDoubleSwapSlip = (
  inputAmount: number,
  pool1: PoolData,
  pool2: PoolData
): number => {
  // formula: calcSwapSlip1(input1) + calcSwapSlip2(calcSwapOutput1 => input2)
  const swapSlip1 = calcSwapSlip(inputAmount, pool1, true);
  const r = calcSwapOutput(inputAmount, pool1, true);
  const swapSlip2 = calcSwapSlip(r, pool2, false);
  const result = swapSlip1 + swapSlip2;
  return result;
};