Instruction: Discuss the methods for handling file uploads in a Node.js application.
Context: This question tests the candidate's ability to implement file upload functionality, a common requirement for web applications, in Node.js.
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First, let's clarify the context: we're discussing the implementation of file upload functionality within a Node.js environment. My assumption here is that we're focusing on server-side handling of file uploads from a client, such as a web browser or mobile app.
One of the primary methods I've successfully utilized involves using the multer middleware for Express applications. Multer is a Node.js middleware for handling multipart/form-data, which is primarily used for uploading files. It's incredibly versatile and easy to integrate into existing Node.js projects....