Virtual Curve TypeScript Client

Note: There is a "Critics and Development Process" section at the end of this document where I discuss my critics about the assignment and my development process.

Overview

The Virtual Curve TypeScript Client provides a seamless interface for interacting with Virtual Curve pools on the Solana blockchain. It offers functionality for creating and managing virtual AMM configurations and pools with customizable parameters.

Installation

pnpm install @solana/web3.js @coral-xyz/anchor bn.js

Key Features

• Create and manage Virtual Curve configurations
• Create and manage Virtual Curve pools
• Customizable fee structures
• Support for different token types and decimals
• Flexible liquidity curve configurations

Usage

Initialize Client

import { Connection } from "@solana/web3.js";
import { VirtualCurveClient } from "./virtual-curve";

const connection = new Connection("YOUR_RPC_URL", "confirmed");
const vcClient = await VirtualCurveClient.create(connection, {
    cluster: "mainnet" // or "devnet", "localhost"
});

Create Configuration

const configKeypair = Keypair.generate();
const createConfigParams = {
    configPubkey: configKeypair.publicKey,
    feeClaimer: userPublicKey,
    owner: userPublicKey,
    quoteMint: quoteMintPublicKey,
    payer: userPublicKey,
    poolFees: {
        baseFee: {
            cliffFeeNumerator: new BN(2_500_000),
            numberOfPeriod: 0,
            reductionFactor: new BN(0),
            periodFrequency: new BN(0),
            feeSchedulerMode: 0,
        },
        dynamicFee: null,
    },
    // ... other configuration parameters
};

const createConfigIx = await vcClient.createConfig(createConfigParams);

Create Pool

const createPoolParams = {
    payer: userPublicKey,
    baseMint: baseMintPublicKey,
    quoteMint: quoteMintPublicKey,
    config: configPubkey,
    instructionParams: {
        name: "Pool Name",
        symbol: "POOL",
        uri: "metadata-uri.com",
    },
};

const { transaction, pool } = await vcClient.createPool(createPoolParams);

Examples

You can find complete working examples in the src/examples directory. The examples demonstrate:

1. Creating a Virtual Curve configuration
2. Setting up custom fee structures
3. Creating a pool with specific parameters
4. Handling transactions and confirmations

Check out src/examples/example.ts for a comprehensive example that shows how to:

• Initialize the client
• Create a configuration with custom curves
• Create a pool with the specified configuration
• Handle transaction confirmations and errors

API Reference

VirtualCurveClient

The main client class for interacting with Virtual Curve.

Methods

• create(connection: Connection, options: ClientOptions): Creates a new client instance
• createConfig(params: CreateConfigParams): Creates a new Virtual Curve configuration
• createPool(params: CreatePoolParams): Creates a new pool with specified parameters

Critics and Development Process

Development Challenges

1. Documentation and Example Inconsistencies

   • The example flow referenced account data structures (e.g., poolConfig.baseMint) that don't exist in the current program and IDL
   • This created additional complexity in implementing the client correctly

2. Program Understanding

   • The process of understanding the program independently was time-consuming and challenging
   • In a real DevRel role, there would typically be access to the development team for clarifications and quick questions
   • This made the task more challenging than it would be in an actual work environment

Implementation Notes

• I didn't have the time to implement unit tests, so I focused on creating a functional example (src/examples/example.ts) to demonstrate the SDK's capabilities
• Successfully tested the implementation using a local Solana validator with the Metaplex program deployed

Task Alignment Concerns

• Previous interviews emphasized this role's focus on community developer support and documentation
• The technical complexity of this assignment seems misaligned with the described role requirements
• A documentation or developer support-focused task might have been more appropriate for evaluating relevant skills