[Solved] Which of the following is the correct syntax for a functional middleware in NestJS? — Ans: function logger(req, res, next) { console.log('Request'); next(); } | NestJS

NestJS - Middleware

Which of the following is the correct syntax for a functional middleware in NestJS?

Aconst logger = () => { console.log('Request'); }

Bclass Logger { use(req, res, next) { console.log('Request'); next(); } }

Cfunction logger(req, res, next) { console.log('Request'); next(); }

Dfunction logger(req, res) { console.log('Request'); }

Step-by-Step Solution

Solution:

Step 1: Check function parameters
Functional middleware must accept three parameters: req, res, and next.
Step 2: Verify function calls next()
Middleware must call next() to pass control; function logger(req, res, next) { console.log('Request'); next(); } does this correctly.
Final Answer:
function logger(req, res, next) { console.log('Request'); next(); } -> Option C
Quick Check:
Correct middleware syntax = function logger(req, res, next) { console.log('Request'); next(); } [OK]

Quick Trick: Middleware needs req, res, next and must call next() [OK]

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Which of the following is the correct syntax for a functional middleware in NestJS?