Welcome to the world of decentralized finance! In this guide, we will explore how to use the ParaSwap SDK to bridge the gap between different cryptocurrencies. Whether you are a new developer or a seasoned pro, this article will help you navigate through the SDK’s features and functionalities.

What is ParaSwap SDK?

The ParaSwap SDK is a powerful tool that streamlines the integration of the ParaSwap API into your projects. With its versatile design, it works seamlessly with both web3 and ethers, allowing you to choose what fits your needs best. Think of it as a Swiss Army knife for cryptocurrency trading — compact, efficient, and ready to tackle any challenge!

Key Features

• Versatility: Integrates smoothly with both web3 and ethers.
• Canonical: Import only the functions you actually need.
• Lightweight: Minimal variant is only 400B when gzipped.

Installing ParaSwap SDK

To get started, you first need to install the ParaSwap SDK. Open your terminal and run the following command:

bash
yarn add @paraswapsdk

Using ParaSwap SDK

Now that you’ve installed the SDK, let’s dive into how to use it. There are numerous ways to utilize the ParaSwap SDK, which can be categorized as follows:

1. Simple SDK

The simple SDK can be created by specifying the chainId and either axios or window.fetch as the fetch implementation. Here’s an analogy: Imagine you’re constructing a straightforward gadget that only requires a power source — you just plug it in, and it works!

typescript
import constructSimpleSDK from '@paraswapsdk';
import axios from 'axios';

const paraSwapMin = constructSimpleSDK({chainId: 1, axios});
const ETH = 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee;
const DAI = 0x6B175474E89094C44Da98b954EedeAC495271d0F;

async function swapExample() {
    const signer = ethers.Wallet.fromMnemonic('__your_mnemonic__');
    const senderAddress = signer.address;
    const priceRoute = await paraSwapMin.swap.getRate({
        srcToken: ETH,
        destToken: DAI,
        amount: srcAmount,
        userAddress: senderAddress,
        side: SwapSide.SELL,
    });
    // Remaining transaction code...
}

2. Full SDK

The full SDK allows you to tap into all functionalities offered by ParaSwap. This is like a fully-featured vending machine where you can select any snack you want!

typescript
import constructFullSDK, {constructEthersContractCaller} from '@paraswapsdk';

const signer = ethers.Wallet.fromMnemonic('__your_mnemonic__');

// Additional setup...
const paraswap = constructFullSDK({
    chainId: 1,
    fetcher,
    contractCaller,
});

3. Partial SDK

If you’re mindful of bundle size, you can create a lightweight version of the SDK by only pulling in the functions you need — similar to ordering just a salad instead of a full course meal!

typescript
import constructPartialSDK, {constructGetRate} from '@paraswapsdk';

const minParaSwap = constructPartialSDK({
    chainId: 1,
    fetcher,
    constructGetRate,
});

Testing the SDK

To ensure your application runs smoothly, you’ll want to conduct some tests. Run the following command, ensuring you’ve set up the required environment variable:

bash
PROVIDER_URL=mainnet_rpc_url yarn test

Troubleshooting

If you encounter issues while integrating or using the ParaSwap SDK, here are a few troubleshooting ideas:

• Ensure that your imports are correct according to the version of the SDK you are using.
• Verify that the network you are connecting to matches the chainId you specified.
• Check the permissions and configurations of your wallet provider (e.g., MetaMask).
• For inconsistent API responses, make sure that you are passing the correct parameters in your function calls.

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Conclusion

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.