katelynsills

'use strict';

const safeAddExclamation = str => {
	return `${str}!`;
};

module.exports = safeAddExclamation;

katelynsills

'use strict';

// let's import our safeAddExclamation string function
const addExclamation = require('./addExclamation');
console.log(addExclamation("hello")); // logs 'hello!'

katelynsills

'use strict';

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

fs.readFile('~/.bitcoind/mywallet.privkey'), function read(err, data) {
	if (err) {
		throw err;
	}

katelynsills

// hmm, why does this need access to the file system and the network?
const addHeader = require('./addHeader', {fs, https});

// no authority is being passed here, this is probably safe
const addFooter = require('./addFooter');

katelynsills

// run from command line
// saves todo to file, appending it
// also displays data, highlighing high, medium, and low priority tasks

// Examples:

// node todo.js --add --todo="brush teeth"
// node todo.js --display

const fs = require('fs');

katelynsills

/* make listener infrastructure */

function makeStateHolder() {
  let state = undefined;
  const listeners = [];

  return {
    addListener(newListener) {
      listeners.push(newListener);
    },

katelynsills

function makeBankAccount(balance) {
  stateHolder.updateState(balance);
  return {
    withdraw(amount) {
      balance -= amount;
      stateHolder.updateState(balance);
    },
    deposit(amount) {
      balance += amount;
      stateHolder.updateState(balance);

katelynsills

function makeStateHolder() {
  let state = undefined;
  const listeners = [];

  return {
    addListener(newListener) {
      listeners.push(newListener);
    },
    getState() {
      return state;

katelynsills

const financeListener = {
  stateChanged(state) {
    if (state < 4000) {
      bankAccount.deposit(1000);
    }
  },
};

katelynsills

const webpageListener = {
  stateChanged(state) {
    console.log('DISPLAYED BALANCE', state);
  },
};