johntran

function map(arr, func) {
 return arr.map(func);
}

// IF you are super particular about ordering
function parseCSV(csv) {
  var peopleArray = csv.split('\n');
  var peopleArrayWithSplitNameElements = map(peopleArray, function(str){
    return str.split(',');
  })

johntran

function foo(a) { 
  return a() 
}

function bar(a) { 
  return 1 
}

// I am passing bar in to foo. bar is a callback function to foo
function woof() {

johntran

./node_modules/.bin/prettier --single-quote --trailing-comma all --write "{,!(node_modules)/**/}*.js"

johntran

/**
  Given two sorted arrays, merge them into one big sorted array
  Ex:
  merge([1,3,5],[2,4,6])
  returns [1,2,3,4,5,6]
  You cannot use array.sort().
  
  Try to solve this in O(n+m) runtime.
  Where n is the length of the first array
  and m is the length of the second array.

johntran

/**
https://lodash.com/docs/4.17.4#memoize

Create a function that saves previous results of past calls.
Example:
function add(x,y) {
  return x + y
}

const memoizedAdd = memoize(add);

johntran

/**
https://lodash.com/docs/4.17.4#flattenDeep
Recursively flattens array.

_.flattenDeep([1, [2, [3, [4]], 5]]);
// => [1, 2, 3, 4, 5]

Even if I nest an element 100 levels deep, it should still flatten it.
*/

johntran

{
  "scripts": {
    "lint": "eslint server",
    "lint:fix": "npm run lint -- --fix",
    "prettier":
      "./node_modules/.bin/prettier --single-quote --trailing-comma all --write \"{,!(node_modules|build|dist|flow-typed)/**/}*.js\"",
    "prettierTS":
      "./node_modules/.bin/prettier --single-quote --trailing-comma all --write \"{,!(node_modules|build|dist|flow-typed)/**/}*.ts\"",
    "prettierTSX":
      "./node_modules/.bin/prettier --single-quote --trailing-comma all --write \"{,!(node_modules|build|dist|flow-typed)/**/}*.tsx\"",

johntran

const foobar = factors =>
  factors.map(factor => 
    factors.map(secondFactor => 
      factor * secondFactor
  )
);

var foobar = function(factors) {
  return factors.map(function(factor) {
    return factors.map(function (secondFactor) {

johntran

function getBillingAddress({
  firstName,
  lastName,
  street,
  addressLineTwo,
  city,
  state,
  zip,
} ) {
  return {

johntran

import * as React from 'react';
import {withFeatureFlags} from './FeatureFlag'

@withFeatureFlags(['TEMP_20180523_123_DELETE_PAYMENTS'])
class EditPaymentDialog extends React.Component<{}, {}> {
  render() {
    const { featureFlags } = this.props;
    const { TEMP_20180523_123_DELETE_PAYMENTS } = featureFlags;
    if (TEMP_20180523_123_DELETE_PAYMENTS) return <div />;
    return null;