You are tasked with refactoring a piece of legacy code where a function declaration within a conditional block is causing inconsistent behavior across different JavaScript engines. What is a potential solution to ensure consistent behavior?

  • Use a function expression instead of a declaration within the conditional block.
  • Ensure the function is declared with the 'let' keyword.
  • Wrap the function declaration in a try-catch block to handle any errors.
  • Split the code into multiple conditional blocks.
To ensure consistent behavior across different JavaScript engines, it's advisable to use a function expression within a conditional block instead of a function declaration. Function declarations are hoisted to the top of their containing function or script, which may lead to inconsistent results in legacy code.
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