how to add custom providers oauth2

[krot3232]

I used the strategy 'social':
auth: { strategies: { social: { scheme: 'oauth2', grantType: 'authorization_code', responseType: 'code', clientId: config.CLIENT_ID, scope: ['profile'], endpoints: { authorization:${config.API_URL}authorize, token: ${config.API_URL}access_token, userInfo: ${config.API_URL}me, logout: ${config.API_URL}logout}, } }, redirect: { login: '/login', callback: '/callback', home: '/' },
when requested(POST /access_token), it does not add client_secret.
Is it possible to add a param client_secret for access_token?
How to add custom providers oauth2 similar to github.ts ?