igorkamyshev / nanoption Goto Github PK

function getJwtToken(executionContext) {
  const jwtToken = Option.of(executionContext)
    .map(httpMod => context.switchToHttp()) // context can have no http mod (e.g. WebSocket)
    .map(request => httpMod.getRequest())   // context can have no http request
    .map(headers => request.headers)        // request can have no headers
    .map(jwtAuth => headers.authorizarion)  // headers can have no auth header
    .map(jwtToken => jwtAuth.split(' ‘)[1])  // auth header can contain only one part
    .getOrElse(‘’)

  return jwtToken
}