var posthtml = require('posthtml');
posthtml([require('posthtml-css-modules')('./cssClasses.json')])
    .process(
        '<h1 css-module="title">My profile</h1>' +
        // You can also use nested modules
        '<div css-module="profile.user">John</div>'
    )
    .then(function (result) {
        console.log(result.html);
    });
// <h1 class="_title_116zl_1 _heading_9dkf">My profile</h1>
// <div class="_profile_user_f93j">John</div>

// profile.js
module.exports = {
  user: '_profile_user_f93j'
}

// article.js
module.exports = {
  title: '_article__tile _heading'
}

var posthtml = require('posthtml');
posthtml([require('posthtml-css-modules')('./cssModules/')])
    .process(
        '<div class="baseWrapper" css-module="profile.user">John</div>' +
        '<h2 css-module="article.title"></h2>'
    )
    .then(function (result) {
        console.log(result.html);
    });
// <div class="baseWrapper _profile_user_f93j">John</div>
// <h2 class="_article__tile _heading"></h2>

var posthtml = require('posthtml'),
    cssModules = {
        title: "_title_116zl_1 _heading_9dkf",
        profile: {
            user: "_profile_user_f93j"
        }
    };
posthtml([require('posthtml-css-modules')(cssModules)])
    .process(
        '<h1 css-module="title">My profile</h1>' +
        // You can also use nested modules
        '<div css-module="profile.user">John</div>'
    )
    .then(function (result) {
        console.log(result.html);
    });
// <h1 class="_title_116zl_1 _heading_9dkf">My profile</h1>
// <div class="_profile_user_f93j">John</div>