How to add an intermediate handler before res.json() in ExpressJs?

Question

Node.js

Hello, I have the task of counting how long the request was executed, and logging the request and response, and for this I need to perform logging before answering the user and calculate how long the request was executed.
How to make it more and more beautiful, add an intermediate handler not at the beginning of the application, but at the end?

This is how I plan to do the first timestamp:

app.use((req, res, next) => {
    req.startTimer = Date.now()
    next()
})

Answer 1

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