feathers.js - discard hook not working in authentication.js - feathersjs

Question

I am using Feathers.js for the backend.
This is the original response from POST /authentication
{
"accessToken": "XXXXX",
"authentication": {
"strategy": "local",
"accessToken": "XXXXX",
"payload": {
"iat": 1616402936,
"exp": 1616489336,
"aud": "https://yourdomain.com",
"iss": "feathers",
"sub": "c15ef318-68fc-471c-9710-52f14d87abda",
"jti": "57d103e1-c81b-4fc6-8bbe-952b74aaf8e3"
}
},
"user": {
"id": "c15ef320-68fc-471c-9710-52f14d87ccda",
"email": "abc.abc#abc.com",
}
}
I want to discard the accessToken field from the response, so I modified authentication.js as:
const { AuthenticationService, JWTStrategy } = require('#feathersjs/authentication');
const { LocalStrategy } = require('#feathersjs/authentication-local');
const { expressOauth } = require('#feathersjs/authentication-oauth');
const { discard, iff, isProvider, lowerCase } = require('feathers-hooks-common')
module.exports = app => {
const authentication = new AuthenticationService(app);
authentication.register('jwt', new JWTStrategy());
authentication.register('local', new LocalStrategy());
authentication.hooks = {
before: {
create: [lowerCase('email')],
update: [lowerCase('email')],
patch: [lowerCase('email')],
},
after: {
create: [discard('accessToken')]
}
};
app.use('/authentication', authentication);
app.configure(expressOauth());
};
But nothing changes after I've changed the code to the above one.
What is wrong here?

Answer 1

Following the API documentation on registering hooks it should be app.service('/authentication').hooks(hooks):
const { AuthenticationService, JWTStrategy } = require('#feathersjs/authentication');
const { LocalStrategy } = require('#feathersjs/authentication-local');
const { expressOauth } = require('#feathersjs/authentication-oauth');
const { discard, iff, isProvider, lowerCase } = require('feathers-hooks-common')
module.exports = app => {
const authentication = new AuthenticationService(app);
authentication.register('jwt', new JWTStrategy());
authentication.register('local', new LocalStrategy());
app.use('/authentication', authentication);
app.service('/authentication').hooks({
before: {
create: [lowerCase('email')],
update: [lowerCase('email')],
patch: [lowerCase('email')],
},
after: {
create: [discard('accessToken')]
}
});
app.configure(expressOauth());
};

Answer 2

The hook function should be put in the last.
...
module.exports = app => {
const authentication = new AuthenticationService(app);
authentication.register('jwt', new JWTStrategy());
authentication.register('local', new LocalStrategy());
app.use('/authentication', authentication);
app.configure(expressOauth());
app.service('authentication').hooks({
before: {
create: [lowerCase('email')],
update: [lowerCase('email')],
patch: [lowerCase('email')],
},
after: {
create: [
discard('authentication')
]
}
});
};