hackernews.js

var Firebase = require('firebase');
var json2html = require('node-json2html');
const api = new Firebase('https://hacker-news.firebaseio.com/v0')

var topStoryIds = []

function loadTopStories(callback) {
    api.child('topstories').on('value', snapshot => {
        topStoryIds = snapshot.val();
        callback(print_stories); 
    })
    
}

function print(callback) {
    for(var i = 0; i < topStoryIds.length; i++){
        api.child('item/' + topStoryIds[i]).once('value', snapshot => {
            callback(snapshot.val());
        })
    }
}

function print_stories(data) {
    var transform = {"tag":"div","children":[{"tag":"a","href":"${url}","html":"${title}"}]};
    
    console.log(json2html.transform(data,transform) );
    //console.log(story.title.toString());
}

function transformJson(data, html) {
    //LivingSocial Is Laying Off More Than 50 Percent of Its Staff (recode.net)
    //31 points by danso 37 minutes ago | 12 comments

    var transform = {"tag":"div","children":[{"tag":"a","href":"${url}","html":"${title}"}]};
    // const docProvider = {
    //                 provideTextDocumentContent: () => json2html.transform(data,transform)
    //             };
    // console.log(json2html.transform(data,transform) );
     vscode.workspace.registerTextDocumentContentProvider('hackernews', docProvider);
     vscode.commands.executeCommand("vscode.previewHtml",
             vscode.Uri.parse("hackernews://base"), vscode.ViewColumn.One)
             .then(() => 1, error => console.log(error));
    html = json2html.transform(data, transform);
    console.log("--------------------------------------------------");
    console.log(html);
    return html;
}

loadTopStories(print);