Chun-Yang

// import posts from https://gist.github.com/Chun-Yang/c19fd8c3209212fd820831a9e816a9d7
posts = []

// authors
authorsMap = {}
posts.forEach(post => {
  authorsMap[post.author] = authorsMap[post.author] || {author: post.author, reactionsCount: 0, commentsCount: 0};
  authorsMap[post.author].reactionsCount += post.reactionsCount;
  authorsMap[post.author].commentsCount += post.commentsCount;
})

Chun-Yang

[
  {
    "title": "I am a mediocre developer",
    "author": "Nikita Sobolev",
    "date": "Mar 13 '18",
    "tags": [
      "#meta",
      "#career",
      "#beginners",
      "#productivity"

Chun-Yang

// navigate to https://dev.to/top/infinity and scroll untill postsData's length is more than 500
postsCount = 500

postsData = [...document.querySelectorAll('#substories .single-article')]
  .slice(0, postsCount)
  .map(post => {
    try {
      const [author, date] = post.querySelector('h4').textContent.trim().split('・')
      const postData = {
        title: post.querySelector('h3').textContent.trim(),

Chun-Yang

import React from 'react';
import { createStore, combineReducers, applyMiddleware, compose } from 'redux';
import { ApolloClient, ApolloProvider, createNetworkInterface } from 'react-apollo';
import accessToken from './reducers/accessToken'

const SERVER_URL = process.env.REACT_APP_SERVER_URL

const networkInterface = createNetworkInterface({
  uri: `${SERVER_URL}/graphql`,
})

Chun-Yang

import { Strategy, ExtractJwt } from 'passport-jwt';
import passport from 'passport';
import { MongoClient } from 'mongodb';

function authenticateHOF({ mongoUrl, collectionName = 'users' }) {
  const mongoPromise = MongoClient.connect(mongoUrl);

  passport.use(new Strategy(
    {
      jwtFromRequest: ExtractJwt.fromHeader('authorization'),

Chun-Yang

import { makeExecutableSchema } from 'graphql-tools';

const typeDefs = `
  type Query {
  }

  type Mutation {
  }
`;

Chun-Yang

• mongo and mongoose pro: there is no schema, no need to migrate
• knex pro: simple
• sequelize: pro: can automatic sync (useful in development)

Chun-Yang

{
  "name": "server",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "scripts": {
      "start": "nodemon index.js --exec babel-node --presets es2015,stage-2"
    },
    "test": "echo \"Error: no test specified\" && exit 1"

Chun-Yang

function getFirstNumber(text) {
  const matches = text.match(/\d+/)
  return matches ? parseInt(matches[0]) : 0
}
$$('.issue-card').map(c => getFirstNumber(c.innerText)).reduce((a, b) => a + b, 0)

Chun-Yang

start = moment('7/31/2017')
end = moment('10/31/2017')

function format(m) {
  return m.format('MM/DD/YYYY')
}

for (var i = 0; i < end.diff(start, 'day'); i += 7) {
  startOfWeek = moment(start).add(i, 'day').isoWeekday(1)
  endOfWeek = moment(start).add(i, 'day').isoWeekday(5)