@pump-fun/pump-swap-sdk/dist/esm/sdk/buy.js

Official SDK for interacting with Pump Swap AMM protocol on Solana

// src/sdk/buy.ts
import BN3 from "bn.js";

// src/sdk/util.ts
import BN2 from "bn.js";
import { AnchorProvider, Program } from "@coral-xyz/anchor";

// src/sdk/pda.ts
import { PublicKey } from "@solana/web3.js";
import BN from "bn.js";
import {
  getAssociatedTokenAddressSync,
  NATIVE_MINT,
  TOKEN_2022_PROGRAM_ID
} from "@solana/spl-token";
var PUMP_AMM_PROGRAM_ID = "pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA";
var PUMP_AMM_PROGRAM_ID_PUBKEY = new PublicKey(PUMP_AMM_PROGRAM_ID);
var PUMP_PROGRAM_ID = "6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P";
var PUMP_PROGRAM_ID_PUBKEY = new PublicKey(PUMP_PROGRAM_ID);
var PUMP_MINT = new PublicKey(
  "pumpCmXqMfrsAkQ5r49WcJnRayYRqmXz6ae8H7H9Dfn"
);

// src/sdk/util.ts
function ceilDiv(a, b) {
  if (b.isZero()) {
    throw new Error("Cannot divide by zero.");
  }
  return a.add(b.subn(1)).div(b);
}
function fee(amount, basisPoints) {
  return ceilDiv(amount.mul(basisPoints), new BN2(1e4));
}

// src/sdk/buy.ts
import { PublicKey as PublicKey2 } from "@solana/web3.js";
function buyBaseInputInternal(base, slippage, baseReserve, quoteReserve, globalConfig, coinCreator) {
  if (baseReserve.isZero() || quoteReserve.isZero()) {
    throw new Error(
      "Invalid input: 'baseReserve' or 'quoteReserve' cannot be zero."
    );
  }
  if (base.gt(baseReserve)) {
    throw new Error("Cannot buy more base tokens than the pool reserves.");
  }
  const numerator = quoteReserve.mul(base);
  const denominator = baseReserve.sub(base);
  if (denominator.isZero()) {
    throw new Error("Pool would be depleted; denominator is zero.");
  }
  const quoteAmountIn = ceilDiv(numerator, denominator);
  const lpFee = fee(quoteAmountIn, globalConfig.lpFeeBasisPoints);
  const protocolFee = fee(quoteAmountIn, globalConfig.protocolFeeBasisPoints);
  const coinCreatorFee = PublicKey2.default.equals(coinCreator) ? new BN3(0) : fee(quoteAmountIn, globalConfig.coinCreatorFeeBasisPoints);
  const totalQuote = quoteAmountIn.add(lpFee).add(protocolFee).add(coinCreatorFee);
  const precision = new BN3(1e9);
  const slippageFactorFloat = (1 + slippage / 100) * 1e9;
  const slippageFactor = new BN3(Math.floor(slippageFactorFloat));
  const maxQuote = totalQuote.mul(slippageFactor).div(precision);
  return {
    internalQuoteAmount: quoteAmountIn,
    uiQuote: totalQuote,
    // Final total quote after fees
    maxQuote
  };
}
function buyQuoteInputInternal(quote, slippage, baseReserve, quoteReserve, globalConfig, coinCreator) {
  if (baseReserve.isZero() || quoteReserve.isZero()) {
    throw new Error(
      "Invalid input: 'baseReserve' or 'quoteReserve' cannot be zero."
    );
  }
  const totalFeeBps = globalConfig.lpFeeBasisPoints.add(globalConfig.protocolFeeBasisPoints).add(
    PublicKey2.default.equals(coinCreator) ? new BN3(0) : globalConfig.coinCreatorFeeBasisPoints
  );
  const denominator = new BN3(1e4).add(totalFeeBps);
  const effectiveQuote = quote.mul(new BN3(1e4)).div(denominator);
  const numerator = baseReserve.mul(effectiveQuote);
  const denominatorEffective = quoteReserve.add(effectiveQuote);
  if (denominatorEffective.isZero()) {
    throw new Error("Pool would be depleted; denominator is zero.");
  }
  const baseAmountOut = numerator.div(denominatorEffective);
  const precision = new BN3(1e9);
  const slippageFactorFloat = (1 + slippage / 100) * 1e9;
  const slippageFactor = new BN3(Math.floor(slippageFactorFloat));
  const maxQuote = quote.mul(slippageFactor).div(precision);
  return {
    base: baseAmountOut,
    // Base tokens received after fees
    internalQuoteWithoutFees: effectiveQuote,
    maxQuote
    // Maximum quote tokens to pay (with slippage)
  };
}
export {
  buyBaseInputInternal,
  buyQuoteInputInternal
};