How to implement guide with recursive function in javascript causing maximum call stack size exceeded scenarios
I'm converting an old project and I'm struggling with a recursive function in JavaScript that is intended to flatten a deeply nested array... Even though it seems correct at first glance, I'm running into a `Maximum call stack size exceeded` behavior when trying to process larger arrays. Here’s the code I’m working with: ```javascript function flattenArray(arr) { let result = []; arr.forEach(item => { if (Array.isArray(item)) { result = result.concat(flattenArray(item)); } else { result.push(item); } }); return result; } ``` I've tested it with smaller arrays like `flattenArray([1, [2, [3]], 4])`, which works fine and returns `[1, 2, 3, 4]`. However, when I try a larger array, such as: ```javascript const largeArray = [1, [2, [3, [4, [5, [6, [7, [8, [9, [10]]]]]]]]]]]; console.log(flattenArray(largeArray)); ``` it throws the behavior mentioned above. I’ve tried using a loop instead of recursion, but that complicates things further and makes the implementation less elegant. Additionally, I want to maintain the simplicity of the code while addressing this scenario. Does anyone have insights on why this is happening, or how I might refactor this function to avoid the maximum call stack behavior? Are there any best practices for handling such deep recursion in JavaScript? I’m using Node.js version 16.13.0, if that helps. This is part of a larger REST API I'm building. Has anyone dealt with something similar? What would be the recommended way to handle this?