loopFacebookGroups

const Nightmare = require('nightmare'),
    nightmare = Nightmare();
module.exports = {
    loopFacebookGroups: function (groups) {
        for (var i = 0; groups.length > i; i++) {
            var post = yield nightmare.goto(groups[i])
                .wait(200) // I like to wait tiny bit before injecting jQuery
                .inject('js', './node_modules/jquery/dist/jquery.js') // injecting jQuery into the page
                .wait(3000)
                .evaluate(() => {
                    var posts = [];
                    $('._5pcr').each(function (index) {
                        var post = {};
                        var userName = $(this).find('h5 a').text();
                        var price = $(this).find('._l57').text();
                        var postDate = $(this).find('abbr').attr('title');
                        var postTitle = $(this).find('._l53>span:last-child').text();
                        var location = $(this).find('.mtm ._l58').text();
                        var description = $(this).find('.userContent p').text();

                        post.id = index;
                        post.price = price;
                        post.username = userName;
                        post.date = postDate;
                        post.title = postTitle;
                        post.location = location;
                        post.description = description;
                        posts.push(post);
                    })
                    return posts;
                })
                .then(function (posts) {
                    console.log(posts);
                    postData = posts;
                })
        }
    }
}