Above all,I haven't done i18n. It only support Chinese now . I'm welcome if you want to translate it to your language.
Github repo: https://github.com/a632079/nodebb-sso-wechat-web
This plugin allow you login via the qrcode of wechat. First , you should apply for a website app in WeChat Open Platform .And then use the appId and appSecret that you get from the platform for setting in ACP.
Search nodebb-plugin-sso-wechat-web in ACP and install it.Some good features
Some Oauth App don't offer email , so we require users to perfect their email setting.（Thanks for sso-facebook）
Support use the WeChat Avatar as your profile avatar. (Thanks for gravatar)