the-vampiire

generation

$ node index.js <AWS cognito user pool ID> <relative/output/path.js>

generates the following file shape

module.exports = {

the-vampiire

const shapeFlags = flags =>
  flags.reduce((shapedFlags, flag) => {
    const [flagName, rawValue] = flag.split("=");
    // edge case where a cookie has a single flag and "; " split results in trailing ";"
    const value = rawValue ? rawValue.replace(";", "") : true;
    return { ...shapedFlags, [flagName]: value };
  }, {});

const extractCookies = headers => {
  const cookies = headers["set-cookie"]; // Cookie[]

the-vampiire

it can be frustrating but it was likely left out because writing a CLI is predicated by having seen this notation used in the documentation when using a CLI.

to answer your question though (and a bit extra because i was there once too):

when you see $ this is almost always used to indicate that everything after the $ is a single line to paste into the command line (shell) and hit enter. it will usually be in this general form

$ program command <required arg> [optional arg]

the-vampiire

const fs = require("fs");
const https = require("https");

const fetch = url =>
  new Promise((res, rej) => {
    try {
      https.get(url, res);
    } catch (error) {
      rej(error);
    }

the-vampiire

sudo: true
language: node_js
cache: npm
node_js: "10.15.3"
before_install:
  - sudo apt-get --yes remove postgresql\*
  - sudo apt-get install -y postgresql-11 postgresql-client-11
  - sudo cp /etc/postgresql/{9.6,11}/main/pg_hba.conf
  - sudo service postgresql restart 11
  - npm i

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PORT=8008
OTHER_VAR='stuff'

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postgres

install

$ brew install postgresql

add shortcut function in your .bashrc or .zshrc file

$ vim ~/.zshrc

VIM commands

the-vampiire

.reduce()

• usage: occasionally
• purpose: loops over an array and reduces the elements into a single element
  • an application of the accumulator pattern
• returns the reduced item, one of several possibilities:
  • plain object - {}
  • Array - []
  • String - ""
  • Number - 1

the-vampiire

require('dotenv').config();
const mongoose = require('mongoose');

const { MONGO_URI, MONGO_DB } = process.env;
const mongo_db = mongoose.createConnection(`${MONGO_URI}${MONGO_DB}`); // moved to global space

describe('User.formSubmit() Mutation', () => {
  let user;
  beforeAll(async (done) => {
    user = await models.User.create(userMock());

the-vampiire

describe('User.formSubmit() Mutation', () => {
  beforeAll(async (done) => {
    await mongoose.connect(`${MONGO_URI}${MONGO_DB}`, { useNewUrlParser: true });
    done();
  });

  afterAll(async (done) => {
    await mongoose.disconnect();
    done();
  });