I can help you troubleshoot and resolve the issue. Here’s an article that addresses the error you’re experiencing:

Error: Cannot read properties of undefined (reading ‘toBase58’) in Solana liquidity.fetchAllPoolKeys()

Issue Explanation

The fetchAllPoolKeys method returns a promise that resolves to an array of Liquidity objects, which are essentially Solana pools. However, when you try to access the toBase58 property on one of these values, it throws a TypeError.

This error typically occurs when you’re trying to convert a value to Base58 (a standardized way of representing addresses and other Solana data) using the toBase58 method. The issue lies in your code, which is attempting to access this method on an undefined value.

Step-by-Step Solution

To resolve this error, let’s go through the steps:

• Understand the fetchAllPoolKeys method: The fetchAllPoolKeys method fetches all pool keys ( addresses) from a specific liquidity provider.

• Accessing Pool Keys: To access these pool keys, you’ll need to call the pool property on each value returned by fetchAllPoolKeys.

• ToBase58 Conversion

  : You can convert values ​​to Base58 using a library like [solana-sdk]( or manually with tools.

• Verify Pool Keys Existence: Before attempting any conversions, ensure that the pool keys you’re trying to access actually exist on the liquidity provider.

Code Refactoring

Here’s an updated version of your code snippet with refactored error handling:

const { Liquidity } = require('@raydium-io/raydium-sdk');


async function main() {

  const connection = this.connection; // Replace 'this' with your actual connection object

    

  try {

    const pools = await Liquidity.fetchAllPoolKeys(connection, { '4': / liquidity provider ID / });

    

    for (const pool of pools) {

      if (!head.headKey || !head.toBase58) continue;

      

      console.log(pool.toBase58); // Log Base58 values

      console.log(pool.poolId);  // Log Pool IDs

      

      const toBase58 = await pool.toBase58();

      console.log(toBase58);

    }

    

  } catch ( error ) {

    console.error('Error fetching pools:', error);

  }

}


main();

Additional Tips

– Ensure you have the @raydium-io/raydium-sdk library installed and imported in your Solana project.

– Always check if a value has properties before trying to access them. You can use optional chaining (?.) or the nullish coalescing operator (??) to handle undefined values ​​safely.

By following these steps, you should be able to resolve the fetchAllPoolKeys method’s error and successfully fetch all liquidity pools on Raydium using the Solana SDK.

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