Issue in getting jwt from passport node library

Question

I have an angular project & I am using the passport node library. I used the below mentioned multiple ways to get the token from passport library but none of them are working, Can you please suggest, why I am not able to get the token here.

app.js

var passport = require('passport');
var PassportStrategy = require('./prj/authen/PassportStrategy');

app.use(passport.initialize());
passport.use('jwt',PassportStrategy.JWTStrategy);
passport.use('anonymous', new AnonymousStrategy());

PassportStrategy.js

var express = require("express");
var passportJWT = require("passport-jwt");

var ExtractJwt = passportJWT.ExtractJwt;
var JwtStrategy = passportJWT.Strategy;

var jwtOptions = {};
jwtOptions.jwtFromRequest = ExtractJwt.fromAuthHeaderAsBearerToken(); //Not getting token here
jwtOptions.secretOrKey = JWTService.getPublicKey();