javascript verify if user token is expired

verify_token.js

import jwtDecode from "jwt-decode";

function dateFromUnix(unix){
   return new Date(unix * 1000)
}
function isTokenExpired(token: string,unixField="exp"){
   if (token) {
      const decoded = jwtDecode(token);
      const exp = decoded[unixField]
      return dateFromUnix(exp) < new Date()
   }
   return true
}

verify_token.ts

import jwtDecode from "jwt-decode";

function dateFromUnix(unix:  number){
   return new Date(unix * 1000)
}
function isTokenExpired(token: string,unixField="exp"){
   if (token) {
      const decoded: any = jwtDecode(token);
      const exp = decoded[unixField] as number
      return dateFromUnix(exp) < new Date()
   }
   return true
}