Efficiently Convert Massive CSV Data to JSON in Javascript🤯  

In this video, we will learn how to efficiently convert massive CSV data to JSON in JavaScript. We will be using the XLSX library to load a CSV file, and then convert it to an array of objects using the sheet_to_json method. Next, we will use the reduce method to convert the array of objects to a hashmap, which provides faster lookup times than a for loop. We will also learn how to find a customer by their ID in the hashmap using the find method. This approach is much more efficient than using a for loop to iterate through the entire array. By the end of this video, you will have a better understanding of how to optimize your CSV to JSON conversion in JavaScript.
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