Get Top story from Hacker News using NightmareJs

nightmare-hacker-news-top-story.js

import Nightmare from 'nightmare';
import colors from 'chalk';
import fs from 'fs';
import path from 'path';

import config from './../config.js';



/* ------------------------------------------ *\
    Scrape Hacker News
\* ------------------------------------------ */

Nightmare(config.nightmare)
  .goto('https://news.ycombinator.com/')
  .inject('js', 'lib/jquery.js')
  .evaluate(getTopStory)
  .end()
  .then(outputJsonFile)
  .then(printStory)
  .catch(handleError);



function getTopStory() {
  const story = $('.storylink:first').text();
  const itemID = $('.storylink:first').attr('href');
  const link = `https://news.ycombinator.com/${itemID}`;

  return { story, link };
}

function outputJsonFile(story) {
  const prettyJSON = JSON.stringify(story, null, '\t');

  const stream = fs.createWriteStream("output/hacker_news-top_story.json");
  stream.write(prettyJSON);
  stream.end();

  return story;
}

function printStory(data) {
  const {yellow, green} = colors;
  console.log(
    yellow('TOP STORY\n'),
    green(data.story)
  );
}

function handleError(error) {
  console.error(
    colors.red(`Search failed: ${error}`)
  );
}