Resolving Data Corruption Issues When Passing Data Between Functions in Node.js

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In this guide, we'll delve into a specific scenario where data transitions result in unexpected formats and how to resolve it efficiently. Let's break down the problem and explore the solution step by step.

The Problem: Data Corruption Explained

You have a function designed to process an array of objects, which looks something like this:

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This function is intended to accept an array and return a structured output. In this particular case, the exportToCSV function is responsible for fetching data and passing it to extractData:

[[See Video to Reveal this Text or Code Snippet]]

Expected vs. Actual Output

When supplied with a proper input (an array of user objects), the expected output should look like this:

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However, instead, you ended up with an unwanted and complicated output:

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The Solution: Properly Handling JSON Data

The good news is that this problem can be fixed easily! The key is to ensure that we parse the JSON data back into an object after stringifying it. Here's how you can correct the issue:

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Key Change Explained:

Adding JSON.parse: After converting result to a string using JSON.stringify, simply parse it back to its original form with JSON.parse. This format allows extractData to handle the input correctly as an array of objects.

Conclusion

Implementing this solution will help ensure that data remains intact as it flows through your functions, allowing for more reliable and predictable results in your applications. Happy coding!