Chains an error handler to the current middleware
Error handler to chain
New chain with the chained error handler
The error handler is chained by catching errors thrown by the call to the next function.
It receives both the error and the input that was given to the next call. It needs to either
produce the output that the next function would have, or re-throw the error it received if it can't.
Note that if the call to next mutated the input in-place before throwing,
the error handler will receive the mutated input.
Chains a middleware to the current one
Middleware to chain
New chain with the chained middleware
The chained middleware will receive the input passed to the next function by the current middleware.
It needs to produce the output that the current middleware expects from the next function.
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A chain wraps a middleware to facilitate composition by chaining it with other middleware
See
Middleware