Convert Nested Array into Single in Js

To convert a nested array into a single (flat) array in JavaScript, you need to extract all elements from the nested structure and place them into a single-level array. This is useful when dealing with deeply nested data structures where elements are stored within multiple levels of arrays.

The .flat() method is the easiest way to achieve this. It takes a depth parameter that determines how many levels of nesting should be flattened. By using Infinity as the depth, you ensure that all nested arrays, regardless of their depth, are completely flattened.

This method is particularly useful in scenarios where data is received in a complex format, such as API responses or dynamically structured lists, and needs to be simplified for further processing.

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