JeffML

import { PubSub } from 'apollo-server-express';
const pubsub = new PubSub();

const TOPIC = 'infoTopic';

const infos = ['info1', 'info2', 'info3', 'done']

const publish = () => {
    setTimeout( () =>
    infos.forEach(info => pubsub.publish(TOPIC, {info})), 1000)

JeffML

import { makeExecutableSchema } from 'graphql-tools';
import resolvers from './resolvers';

const typeDefs = [
  `
  type Query {
    go: String!
  }

  type Subscription {

JeffML

import express from 'express';

import { ApolloServer } from 'apollo-server-express';
import http from 'http';
import { typeDefs } from './schema';
import resolvers from './resolvers';

const PORT = 3031;
const app = express();

JeffML

const stuff = {
  isWombat: true,
  sugar: ["in the morning", "in the evening", "at suppertime"] 
}

instance.newStuff = stuff;

instance.getStuff();

instance.newStuff.sugar = ["You are my candy, girl", "and you keep me wanting you"];

JeffML

const insertStuff = (target, name, descriptor) => {
  const original = descriptor.value;  

  if (typeof original === 'function') { 
    const paramNames = getParamNames(original)
    descriptor.value = function () {
      const args = paramNames.reduce((arr, pn, i) => {
        arr[i] = this.newStuff[pn];
        return arr;}, [] )

JeffML

var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
var ARGUMENT_NAMES = /([^\s,]+)/g;
function getParamNames(func) {
  var fnStr = func.toString().replace(STRIP_COMMENTS, '');
  var result = fnStr.slice(fnStr.indexOf('(') + 1, fnStr.indexOf(')')).match(ARGUMENT_NAMES);
  if (result === null)
    result = [];
  return result;
}

JeffML

class MyClass {
  @log
  sum(a, b) {
    return a + b;
  }
}

const instance = new MyClass()
instance.sum(2, 3);  // execute the decorated method

JeffML

const log = (target, name, descriptor) => {
  /*
    target: the class instance of the method
    name: the name of the method
    descriptor:  
      value: the method itself 
  */

  const original = descriptor.value;  // hold onto the original function

JeffML

import React from "react"
import { Query } from "react-apollo";
import gql from "graphql-tag";
const ExchangeRates = () => (
  <Query
    query={gql`
      {
        rates(currency: "USD") {
          currency
          rate

JeffML

import React from 'react';
import logo from './logo.svg';
import './App.css';
import { ApolloProvider } from "react-apollo";
import ApolloClient from "apollo-boost";
const client = new ApolloClient({
  uri: "https://w5xlvm3vzz.lp.gql.zone/graphql"
});
const App = () => (
  <ApolloProvider client={client}>