The next function is a function in the Express router which, when invoked, ... middleware functions that return a Promise will call next(value) when they reject or ... The middleware function myLogger simply prints a message, then passes on the ...
passing-data-to-middleware-express
These methods are all available via `require('express-validator')`. ... are present in more than one location, then all instances of that field value must pass the validation. ... Returns: a middleware instance and { run: (req) => Promise }. 939c2ea5af
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