Middleware

Middlewares are functions that allow them to be executed before any route.

Example:

router.use((req, res) => {
  req.executionStart = performance.now();
});

Multiple middlewares can be nested

router
  .use((req, res) => {
    // Middleware 1
  })
  .use((req, res) => {
    // Middleware 2
  })
  .use((req, res) => {
    // Middleware 3
  });

NOTE: Remember that middlewares run according to the order that were created.