markdown-viewer/chrome/markdown.js

var md = (function () {
    // marked
    var defaults = {
        gfm: true,
        // highlight: null,
        tables: true,
        breaks: false,
        pedantic: false,
        sanitize: true,
        smartLists: true,
        smartypants: false,
        langPrefix: 'language-'//prism
    };

    function compile (markdown, sendResponse) {
        chrome.storage.sync.get(function (sync) {
            marked.setOptions(sync.options);

            marked(markdown, function (err, html) {
                if (err) throw err;
                // prism fix
                html = html.replace(/language-html/g, 'language-markup');
                html = html.replace(/language-js/g, 'language-javascript');
                
                sendResponse({message: 'marked', marked: html});
            });
        });
    }

    return {
        defaults: defaults,
        compile: compile
    }
}());