npm jwt decode
import jwt_decode from "jwt-decode"; var token = "eyJ0eXAiO.../// jwt token";var decoded = jwt_decode(token); console.log(decoded); /* prints: * { foo: "bar", * exp: 1393286893, * iat: 1393268893 } */ // decode header by passing in options (useful for when you need `kid` to verify a JWT):var decodedHeader = jwt_decode(token, { header: true });console.log(decodedHeader); /* prints: * { typ: "JWT", * alg: "HS256" } */