meteora-dbc-toolkit/dist/index.js

TypeScript toolkit for building buy/sell transactions against Meteora Dynamic Bonding Curves on Solana.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.MeteoraTrader = void 0;
const spl_token_1 = require("@solana/spl-token");
const bn_js_1 = __importDefault(require("bn.js"));
const basic_util_1 = require("./utils/basic.util");
const dynamic_bonding_curve_sdk_1 = require("@meteora-ag/dynamic-bonding-curve-sdk");
class MeteoraTrader {
    constructor(connection) {
        this.connection = connection;
        this.dbcClient = new dynamic_bonding_curve_sdk_1.DynamicBondingCurveClient(connection, "confirmed");
    }
    async buy(params) {
        const { mint, buyer, buyAmountLamports, slippageBasisPoints = basic_util_1.DEFAULT_SLIPPAGE_BASIS_POINTS } = params;
        const poolAcc = await this.dbcClient.state.getPoolByBaseMint(mint);
        if (!poolAcc) {
            throw new Error(`DBC pool not found for mint: ${mint.toBase58()}`);
        }
        const pool = poolAcc.account;
        const config = await this.dbcClient.state.getPoolConfig(pool.config);
        const quoteMint = config.quoteMint;
        const isMigrated = pool.isMigrated;
        if (isMigrated || !quoteMint.equals(spl_token_1.NATIVE_MINT)) {
            throw new Error(`this is not meteora dynamic bonding curve`);
        }
        const tx = await this.dbcClient.pool.swap({
            owner: buyer,
            amountIn: new bn_js_1.default(buyAmountLamports),
            minimumAmountOut: new bn_js_1.default(0),
            swapBaseForQuote: false,
            pool: poolAcc.publicKey,
            referralTokenAccount: null,
        });
        return tx;
    }
    async sell(params) {
        const { mint, seller, sellTokenAmount, slippageBasisPoints = basic_util_1.DEFAULT_SLIPPAGE_BASIS_POINTS } = params;
        const poolAcc = await this.dbcClient.state.getPoolByBaseMint(mint);
        if (!poolAcc) {
            throw new Error(`DBC pool not found for mint: ${mint.toBase58()}`);
        }
        const pool = poolAcc.account;
        const config = await this.dbcClient.state.getPoolConfig(pool.config);
        const quoteMint = config.quoteMint;
        const isMigrated = pool.isMigrated;
        if (isMigrated || !quoteMint.equals(spl_token_1.NATIVE_MINT)) {
            throw new Error(`this is not meteora dynamic bonding curve`);
        }
        const tx = await this.dbcClient.pool.swap({
            owner: seller,
            amountIn: new bn_js_1.default(sellTokenAmount),
            minimumAmountOut: new bn_js_1.default(0),
            swapBaseForQuote: true,
            pool: poolAcc.publicKey,
            referralTokenAccount: null,
        });
        return tx;
    }
}
exports.MeteoraTrader = MeteoraTrader;
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