In JavaScript, the flat() method is used to flatten nested arrays into a single array. It recursively reduces the depth of the array by one level for each call. You can also specify how deep you want to flatten the array.
Key Points:
flat() does not modify the original array but returns a new, flattened array.
It only flattens arrays; non-array elements remain as-is in the result.
It’s useful for dealing with deeply nested arrays, reducing the complexity of handling them.
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