Ethereum: JsonRpcProvider not found in ethers.js

Ethereum JSON-RPC provider not found in ethers.js

As a developer working on a JavaScript project that interacts with the Ethereum blockchain using “ethers.js”, you may encounter an issue when trying to establish a connection to the network. One of the most common errors is related to a missing instance of “JsonRpcProvider”, even though it was imported correctly.

In this article, we will look at why this error occurs and take steps to resolve it, ensuring that your application can successfully communicate with the Ethereum blockchain.

Why is the JSON-RPC provider not showing up?

The issue lies in how “ethers.js” handles importing external dependencies, including “JsonRpcProvider”. When you run a script using “require”, it does not create a new scope for each imported module. Instead, it looks for modules with specific names (including “.js”) and their parents.

In your case, “ethers.js” is not found in its own scope due to this behavior. The “JsonRpcProvider” instance is not in the current “require” scope, which causes an error when you try to access it.

Solution:

To fix this problem, you need to explicitly import the “JsonRpcProvider” module using the correct path. Here’s how to do it:

const JsonRpcProvider = request('@ethers-project/ethers-rpc-provider');

By modifying the import statement, we indicate that the module must be in the @ethers-project/ethers-rpc-provider package.

Additional considerations:

• Make sure you have installed all required packages by running npm install ethers or yarn install ethers.

• Make sure you are using the latest version of ethers.js as some minor changes may affect imports.

• If you are still having problems, it is possible that other dependencies in your project are causing conflicts. Try reproducing the issue in isolation or by removing the problematic module.

Best practices:

To avoid this issue in future projects, consider the following best practices:

• Use explicit imports instead of relying on the require function of external modules.

• Verify that all required packages are installed and up to date.

• Organize your project’s dependencies using a package manager such as npm or yarn.

By addressing this specific issue and following best practices, you can ensure smoother interaction with the Ethereum blockchain using “ethers.js”.