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Task: Implement Character Replacement at Specific Index in JavaScript

Task: Implement Character Replacement at Specific Index in JavaScript: a task in Terminal-Lego-15k (Harbor dataset). In JavaScript, strings are immutable, meaning you cannot directly modify a character at a specific index like you would in some other programming languages. Your task is to create a…

The task

In JavaScript, strings are immutable, meaning you cannot directly modify a character at a specific index like you would in some other programming languages. Your task is to create a JavaScript utility that provides a `replaceAt` function to replace a character at a specific index in a string.

Part of PrimeIntellect/Terminal-Lego-15k.