What did we Learn with JavaScript Fatigue? (FrontMania)

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1 PAGE NUMBER What can we learn with JavaScript Fatigue? github: lucasfcosta twitter: thewizardlucas L U C A S F C O S T A . C O M

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2 PAGE NUMBER What did we learn with JavaScript Fatigue? github: lucasfcosta twitter: thewizardlucas L U C A S F C O S T A . C O M

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3 PAGE NUMBER WHERE IS JAVASCRIPT GOING? github: lucasfcosta twitter: thewizardlucas L U C A S F C O S T A . C O M

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PAGE NUMBER 4 WHAT ARE WE DOING TODAY LUCASFCOSTA.COM

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PAGE NUMBER 5 github: lucasfcosta L U C A S F C O S T A . C O M twitter: thewizardlucas

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PAGE NUMBER 6 github: lucasfcosta L U C A S F C O S T A . C O M twitter: thewizardlucas

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PAGE NUMBER 7 WHAT ARE WE DOING TODAY LUCASFCOSTA.COM

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PAGE NUMBER 8 WHAT ARE WE DOING TODAY LUCASFCOSTA.COM

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PAGE NUMBER 9 github: lucasfcosta L U C A S F C O S T A . C O M twitter: thewizardlucas

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10 PAGE NUMBER Part 1  Looking in retrospective

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11 PAGE NUMBER

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12 PAGE NUMBER What did I get right about JavaScript fatigue?

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13 PAGE NUMBER What did I get wrong about JavaScript fatigue?

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PAGE NUMBER 14 LUCASFCOSTA.COM

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PAGE NUMBER 15 Realities of your industry 101

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PAGE NUMBER REALITIES OF YOUR INDUSTRY 101 16 LUCASFCOSTA.COM Software solves business problems Don't Call Yourself A Programmer, And Other Career Advice - Patrick McKenzie

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REALITIES OF YOUR INDUSTRY 101 PAGE NUMBER LUCASFCOSTA.COM 17 You are not paid to write code The less code you write, the better

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M O R E V A L U E   L E S S S O F T W A R E

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L E S S T I M E F I X I N G I T M O R E V A L U E   L E S S S O F T W A R E

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L E S S T I M E F I X I N G I T L E S S T I M E D E B U G G I N G I T M O R E V A L U E   L E S S S O F T W A R E

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L E S S T I M E F I X I N G I T L E S S T I M E D E B U G G I N G I T L E S S T I M E T H I N K I N G A B O U T I T M O R E V A L U E   L E S S S O F T W A R E

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L E S S T I M E F I X I N G I T L E S S T I M E D E B U G G I N G I T L E S S T I M E T H I N K I N G A B O U T I T M O R E V A L U E   L E S S S O F T W A R E

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The only thing better than "less software" is no software at all.

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 24 Technology is not a goal

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PAGE NUMBER LUCASFCOSTA.COM 25 REALITIES OF YOUR INDUSTRY 101 versus Revenue Cost All that matters™

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 26

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PAGE NUMBER 27 Realities of your industry 101 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 28 Realities of your industry 101 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 29 Realities of capitalism 101 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 30 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Assumption 1:

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PAGE NUMBER 31 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Capitalism Assumption 1:

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PAGE NUMBER 32 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Capitalism ✅ Right Assumption 1:

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PAGE NUMBER 33 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Capitalism ✅ Right Assumption 1:

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PAGE NUMBER LUCASFCOSTA.COM 34 REALITIES OF YOUR INDUSTRY 101 Productivity

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PAGE NUMBER LUCASFCOSTA.COM 35 REALITIES OF YOUR INDUSTRY 101 Web development had a productivity problem.

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PAGE NUMBER 36 Good programmers know what to write. Great ones know what to rewrite (and reuse) — Eric S. Raymond LUCASFCOSTA.COM OUR ROLE

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 37

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 38 709,843 packages on July 2017

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 39 709,843 packages on September 2017

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 40 October 2018

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 41 November 2018

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 42 1,126,034 packages on

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 43 1,126,034 packages on " 2x

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 44 ~862 packages a day

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 45 We complained about it, but we like it.

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PAGE NUMBER LUCASFCOSTA.COM JAVASCRIPT 46 npm and the future of JavaScript - Laurie Voss - JSConf US 2018

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 47

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 48 JS These things exist to solve problems.

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 Donald Knuth “ 49 "Premature optimisation is the root of all evil"

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PAGE NUMBER 50 REALITIES OF YOUR INDUSTRY 101 The greatest performance improvement of all is when a system goes from not-working to working John Ousterhout

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PAGE NUMBER LUCASFCOSTA.COM REALITIES OF YOUR INDUSTRY 101 51 Remember this?

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PAGE NUMBER 52 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM JS fatigue happened because of premature optimisation Assumption:

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PAGE NUMBER 53 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM JS fatigue happened because of premature optimisation Partially right Assumption:

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PAGE NUMBER 54 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM JS fatigue happened because we had too much to figure out

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PAGE NUMBER 55 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM JS fatigue happened because we had too much to figure out and we were doing it all at once

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PAGE NUMBER 56 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM JS fatigue happened because we had too much to figure out and we were doing it all at once but still, to solve problems we didn't have

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PAGE NUMBER LUCASFCOSTA.COM 57 REALITIES OF YOUR INDUSTRY 101

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PAGE NUMBER LUCASFCOSTA.COM 58 REALITIES OF YOUR INDUSTRY 101 analysis paralysis

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PAGE NUMBER LUCASFCOSTA.COM 59 REALITIES OF YOUR INDUSTRY 101 analysis paralysis

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PAGE NUMBER 60 More choices  Less satisfaction REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 61 As the number of options increases, the costs, in time and eﬀort, of gathering the information needed to make a good choice also increases Barry Schwartz REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 62 Our willpower is limited REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER LUCASFCOSTA.COM 63 REALITIES OF YOUR INDUSTRY 101 Creative Slides Presentation Your willpower is like a muscle Judges would make more favorable decisions after those breaks. After a lunch break the rates of favorable decisions immediately jumps to 65% again. Dotted lines represent food breaks In the morning we started with 65% of favorable decisions and at the end of the day this rate steadily drops to zero. As time goes by, less favorable decisions occur James Clear Image by James Clear

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PAGE NUMBER 64 We might not be JavaScript fatigued maybe we’re just decision fatigued REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 65 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM We were decision fatigued ❌ Wrong Assumption:

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PAGE NUMBER 66 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM We had an unstable ecosystem.

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M A R K 0 3 P R E S E N T A T I O N PAGE NUMBER 67 LUCASFCOSTA.COM

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PAGE NUMBER 68 These things are not new LUCASFCOSTA.COM JAVASCRIPT NPM MAVEN

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PAGE NUMBER 69 These things are not new LUCASFCOSTA.COM JAVASCRIPT E4X JSX

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PAGE NUMBER 70 These things are not new LUCASFCOSTA.COM JAVASCRIPT

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PAGE NUMBER 71 These things are not new LUCASFCOSTA.COM JAVASCRIPT ALGOL 58

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PAGE NUMBER 72 These things are not new npm webpack LUCASFCOSTA.COM JAVASCRIPT

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PAGE NUMBER 73 These things are not new LUCASFCOSTA.COM JAVASCRIPT Symbian  WRT

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PAGE NUMBER 74 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The JavaScript ecosystem was not mature yet. Assumption:

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PAGE NUMBER 75 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The JavaScript ecosystem was not mature yet. Assumption: ✅ Right

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PAGE NUMBER 76 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Innovation has a pattern

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PAGE NUMBER 77 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The S-curve theory of innovation cycles. QUORA Our growth phase is ending

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PAGE NUMBER 78 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The S-curve theory of innovation cycles. QUORA Our growth phase is ending 2013 - 2017

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PAGE NUMBER 79 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The S-curve theory of innovation cycles. QUORA The ecosystem is maturing, before it can retire 2013 - 2017 we are here now

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PAGE NUMBER 80 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM https://2018.stateofjs.com/opinions/ We're not going that fast anymore

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PAGE NUMBER 81 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM 25% of developers were using JavaScript for less than two years Assumption: This Year In JavaScript (NPM)  https://img04.en25.com/Web/NPMInc/%7B82407d56-74c7-4fde- a3b7-59a2df23544f%7D_This_Year_In_JavaScript__2019_Predictions_Copy.pdf 69% are self taught

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PAGE NUMBER 82 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Security will become a huge concern. Prediction:

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PAGE NUMBER npm and the future of JavaScript 83 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM https://slides.com/seldo/npm-and-the-future-of-javascript/#/72 As the ecosystem becomes more mature, people will care more

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PAGE NUMBER 84 Realities of capitalism 101 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 85 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 86 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER npm and the future of JavaScript • 87 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM https://slides.com/seldo/npm-and-the-future-of-javascript/#/72

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PAGE NUMBER 88 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Innovation will happen mostly around tooling and performance Prediction:

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PAGE NUMBER 89 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Robustness will become a huge concern. Prediction:

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PAGE NUMBER 90 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The front-end ecosystem will focus on tools for state management, robustness, and data-handling Prediction:

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M A R K 0 3 P R E S E N T A T I O N PAGE NUMBER PRESENTATION BY: MARKZUGELBERG 91 We have already started to see this Apollo and relay were the pioneers. But tooling will be built around them, also on the server. GRAPHQL 1 Tools like Mobx and XState are on the rise. STATE MANAGEMENT 2 This is why we love TypeScript so much.  We're getting better at tests too! ROBUSTNESS 3

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PAGE NUMBER LUCASFCOSTA.COM 92 REALITIES OF YOUR INDUSTRY 101 The costs for maintaining web applications was high.

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PAGE NUMBER “ 93 Abstractions are necessary to reduce the cognitive load of how things work so you can focus on creating. Eric Clemmons LUCASFCOSTA.COM JAVASCRIPT

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JAVASCRIPT PAGE NUMBER LUCASFCOSTA.COM 94 Front-end Frameworks

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PAGE NUMBER 95 JAVASCRIPT LUCASFCOSTA.COM

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PAGE NUMBER 96 01 No previous examples 02 Lack of good abstractions 03 Web platform constraints 04 Productivity BUILDING USER INTERFACES IS HARD

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PAGE NUMBER 97 We learned how to build UIs

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PAGE NUMBER 98 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The rhythm of release of new front-end frameworks is going to decrease Prediction:

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PAGE NUMBER 99 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM The front-end ecosystem will focus on productivity and cross-functionality Prediction:

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M A R K 0 3 P R E S E N T A T I O N PAGE NUMBER PRESENTATION BY: MARKZUGELBERG 100 We have already started to see this UI design tools are starting to focus on componentization and reuse UI DESIGN TOOLS 2 More and more people adopt tools like Docz, Storybook and Styleguidist. COMPONENT DIRECTORIES 1

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PAGE NUMBER 101 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Design systems will become ubiquitous Prediction: Interface production has been industrialized Innovation will happen on other fronts

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JAVASCRIPT PAGE NUMBER LUCASFCOSTA.COM 102 Transpilers Compilers

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PAGE NUMBER 103 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Assumption: Transpilation was going to be necessary for a long time.

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PAGE NUMBER 104 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Transpilation was going to be necessary for a long time. Assumption: ✅ Right

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PAGE NUMBER 105 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM This Year In JavaScript (NPM)  https://img04.en25.com/Web/NPMInc/%7B82407d56-74c7-4fde- a3b7-59a2df23544f%7D_This_Year_In_JavaScript__2019_Predictions_Copy.pdf

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PAGE NUMBER LUCASFCOSTA.COM 106 HOW TO DEAL WITH IT The compilation step is here to stay

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PAGE NUMBER 107 LUCASFCOSTA.COM JAVASCRIPT

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PAGE NUMBER 108 LUCASFCOSTA.COM JAVASCRIPT

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PAGE NUMBER 109 The browser has become an universal platform LUCASFCOSTA.COM JAVASCRIPT

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PAGE NUMBER 110 Everything is going to run in a browser Prediction:

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PAGE NUMBER LUCASFCOSTA.COM 111 HOW TO DEAL WITH IT JavaScript isn't going anywhere

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PAGE NUMBER LUCASFCOSTA.COM 112 HOW TO DEAL WITH IT Because JavaScript is everywhere.

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PAGE NUMBER LUCASFCOSTA.COM 113 HOW TO DEAL WITH IT Because JavaScript is everywhere. Even in places it shouldn't be

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PAGE NUMBER LUCASFCOSTA.COM 114 HOW TO DEAL WITH IT “Any application that can be written in JavaScript, will eventually be written in JavaScript.”  — Jeff Atwood, Cofounder of StackOverflow

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PAGE NUMBER LUCASFCOSTA.COM 115 HOW TO DEAL WITH IT We choose JavaScript because we like it

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PAGE NUMBER 116

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JAVASCRIPT PAGE NUMBER LUCASFCOSTA.COM 117 Module Bundlers

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PAGE NUMBER 118 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Module bundlers will be necessary until we can have a good native module system Assumption:

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PAGE NUMBER 119 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Module bundlers will be necessary until we can have a good native module system Assumption: ❌ Wrong

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PAGE NUMBER LUCASFCOSTA.COM 120 REALITIES OF YOUR INDUSTRY 101 Webpack ❤ Module bundlers are here to stay They're here, but not quite there yet. HTTP/2 push is hard and native modules aren't fast enough. NATIVE MODULES Tree-shaking, cache invalidation and other code transformations (eliminating dead-code, uglifying code, and pre-evaluation) OPTIMISATIONS Browsers adopting the same runtimes is dangerous, as it leads to an ecosystem where a single actor has too much power. LANGUAGE FEATURES JSX is here to stay, and even if we're not using React, TypeScript is also not going anywhere soon. NEW LANGUAGES PREDICTION 3

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PAGE NUMBER LUCASFCOSTA.COM 121 REALITIES OF YOUR INDUSTRY 101 We learned why our tools exist

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PAGE NUMBER 122 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM https://2018.stateofjs.com/opinions/ We learned why our tools exist

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123 PAGE NUMBER Part 2  What about the future?

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PAGE NUMBER 124 Tech skills are going to become a commodity

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PAGE NUMBER 125 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 126 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM In 2019, the coding bootcamp market will grow by 49%, to an estimated 23,043 graduates in 2019, up from 15,429 in 2018. https://www.coursereport.com/reports/coding-bootcamp-market-size-research-2019

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PAGE NUMBER 127 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM Since 2013 bootcamps have grown 11x https://www.coursereport.com/reports/coding-bootcamp-market-size-research-2019

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PAGE NUMBER 128 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER 129 Realities of capitalism 101 REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER LUCASFCOSTA.COM 130 HOW TO DEAL WITH IT Offer Demand pricing

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PAGE NUMBER LUCASFCOSTA.COM 131 HOW TO DEAL WITH IT how can we remain relevant?

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PAGE NUMBER LUCASFCOSTA.COM 132 HOW TO DEAL WITH IT focus on value creation

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133 PAGE NUMBER 64% 36% Coding Design Some Experience With Automated Aids To The Design Of Large-Scale Reliable Software - 1975 Occurrence of Errors REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER LUCASFCOSTA.COM 134 REALITIES OF YOUR INDUSTRY 101 In the NASA Apollo project about 73% of all errors were design errors. HAMILTON, M., AND ZELDIN, S. "Higher order software--a methodology for defining software,"

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135 PAGE NUMBER “ Louis Srygley Without requirements or design, programming is the art of adding bugs to an empty text file. REALITIES OF YOUR INDUSTRY 101 LUCASFCOSTA.COM

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PAGE NUMBER LUCASFCOSTA.COM 136 REALITIES OF YOUR INDUSTRY 101 Good design adds value faster than it adds cost. Thomas C. Gale

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PAGE NUMBER LUCASFCOSTA.COM 137 REALITIES OF YOUR INDUSTRY 101 Programming is what you do when you're alone, software engineering is what you do when you're in a team.

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PAGE NUMBER LUCASFCOSTA.COM 138 HOW TO DEAL WITH IT especialize

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PAGE NUMBER LUCASFCOSTA.COM 139 HOW TO DEAL WITH IT develop problem domain knowledge

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PAGE NUMBER LUCASFCOSTA.COM 140 HOW TO DEAL WITH IT do things that don’t scale Paul Graham

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PAGE NUMBER LUCASFCOSTA.COM 141 HOW TO DEAL WITH IT learn the fundamentals

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PAGE NUMBER LUCASFCOSTA.COM 142 HOW TO DEAL WITH IT don’t be defined by your stack

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PAGE NUMBER LUCASFCOSTA.COM 143 HOW TO DEAL WITH IT Master Foo & The Recruiter

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PAGE NUMBER LUCASFCOSTA.COM 144 HOW TO DEAL WITH IT A technical recruiter, having discovered that the ways of Unix hackers were strange to him, sought an audience with Master Foo to learn more about the Way.

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PAGE NUMBER LUCASFCOSTA.COM 145 HOW TO DEAL WITH IT The recruiter said:  “I have observed that Unix hackers scowl or become annoyed when I ask them how many years of experience they have in a new programming language. Why is this so?”

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PAGE NUMBER LUCASFCOSTA.COM 146 HOW TO DEAL WITH IT Master Foo stood, and began to pace across the office floor. The recruiter was puzzled, and asked “What are you doing?”

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PAGE NUMBER LUCASFCOSTA.COM 147 HOW TO DEAL WITH IT “I am learning to walk,” replied Master Foo.

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PAGE NUMBER LUCASFCOSTA.COM 148 HOW TO DEAL WITH IT “I saw you walk through that door” the recruiter exclaimed “and you are not stumbling over your own feet. Obviously you already know how to walk.”

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PAGE NUMBER LUCASFCOSTA.COM 149 HOW TO DEAL WITH IT “Yes, but this floor is new to me.” replied Master Foo. Upon hearing this, the recruiter was enlightened. http://www.catb.org/esr/writings/unix-koans/recruiter.html

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PAGE NUMBER LUCASFCOSTA.COM 150 HOW TO DEAL WITH IT trends for 2020

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PAGE NUMBER TRENDS FOR 2020 REACT GRAPHQL CSS IN JS DENO IS COMING TYPESCRIPT COMPONENT LIBRARIES WEB ASSEMBLY SERVER-SIDE RENDERING

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PAGE NUMBER LUCASFCOSTA.COM 152 thank you L U C A S F C O S T A . C O M github: lucasfcosta twitter: thewizardlucas write code read books

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PAGE NUMBER LUCASFCOSTA.COM 153 thank you L U C A S F C O S T A . C O M github: lucasfcosta twitter: thewizardlucas twitter: thewizardlucas