Google-api-javascript-client: gapi.auth2.authorize authorization code doesn't return refresh token

[Jasemalsadi]

Hi,
I have a website that require multiple client id to get offline access to youtube Analytics API. I front Side I am using:
gapi.auth2.authorize
As it covers the use case of multiple client id. I an response_type, I am passing code and the token . Example of the parameters :

{
client_id: "the client id",
'scope': " the sope",
'prompt': 'select_account',
'response_type': 'code token',
}

I use authorization code that return it to exchange it in the server side to get the access token and refresh token .
However, It doesn't contain a refresh token, I used the PHP method fetchAccessTokenWithAuthCode

[kongguibin]

To get a refresh token, you should put 'access_type': 'offline' in your options.

[logesh2496]

did you find a way to get the refresh_token?