Node.js FAQ: Top Questions

27. What is the vm module in Node.js?

The vm (Virtual Machine) module in Node.js provides APIs to execute JavaScript code in isolated contexts, allowing sandboxed execution without affecting the global scope.

Methods: vm.runInNewContext , vm.runInThisContext , vm.Script .
Sandboxing: Limited; does not prevent access to Node.js APIs.
Performance: Slower due to context creation.
Use Case: Evaluating user scripts, testing code snippets.

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