salix/loopback/server/middleware/current-user.js

const {models} = require('vn-loopback/server/server');

module.exports = function(options) {
    return async function(req, res, next) {
        if (!req.accessToken) {
            const token = req.headers.authorization;
            if (!token) return next();

            const accessToken = await models.AccessToken.findById(token);
            if (!accessToken) return next();

            return next();
        }

        let LoopBackContext = require('loopback-context');
        let loopbackContext = LoopBackContext.getCurrentContext();

        if (loopbackContext)
            loopbackContext.set('currentUser', req.accessToken.userId);

        next();
    };
};