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TypeScript 101

TypeScript 101

Lightning Talks
Strange Loop 2017
8:30 PM - Friday, September 29th

Frances Coronel

September 29, 2017

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  1. A brief class that introduces the benefits TypeScript provides to

    large scale projects. Prerequisites: JavaScript 202 TypeScript 101
  2. Professor Frances Coronel @fvcproductions fvcproductions in/fvcproductions

  3. Syllabus (1) TypeScript vs JavaScript (2) The Rise of TypeScript’s

    Popularity (3) Homework Assignments
  4. W8, what is TypeScript? • free & open-source programming language

    developed & maintained by Microsoft • strict syntactical superset of JavaScript • eases development of large scale applications written in JavaScript • extends JavaScript by adding static types, classes, modules, interfaces & generics 5 years old
  5. (1) TypeScript vs JavaScript .ts .js

  6. The Nitty Gritty npm i -g typescript Installing TypeScript Compiling

    our file to JS tsc multiplication.ts Configuring options touch tsconfig.json npm i -g tslint Optional Installing TSLint
  7. JavaScript is TypeScript but TypeScript is not JavaScript. Superset vs

  8. 1. Referenced a symbol/ variable which is not declared in

    program 2. Not able to fully infer the type of a particular variable and warns against using it as is 3. Even if your source code has TypeScript errors, it will still produce JavaScript code which you can execute Spell Checker
  9. What Types Provide ✓ modular development ✓ can be learned

    easily ✓ non-invasive ✓ long-term vision ✓ clean output To Type or Not To Type Pros of JavaScript • EVERYWHERE • awesome libraries • flexible Cons of JavaScript • dynamic typing • lack of modularity • verbose patterns
  10. (2) The Rise of TypeScript’s Popularity

  11. None
  12. Companies ❤ TypeScript

  13. Developers ❤ TypeScript

  14. None
  15. None
  16. None
  17. (3) Homework Assignments

  18. Option 1. Watch the creator of TypeScript talk about TypeScript

    at the #MSBuild Conference “What’s New In TypeScript” by Anders Hejlsberg
  19. Option 2. Enroll in an edX course on TypeScript created

    by Microsoft that starts tomorrow
  20. Option 3. Screw homework and go play instead! typescriptlang.org/play

  21. Thanks for listening! ☺ @fvcproductions fvcproductions in/fvcproductions Slides will be

    uploaded ASAP at speakerdeck.com/fvcproductions
  22. Credits 1. Mathematical Finn Photo: https://glarbinator.deviantart.com/art/Mathematical-Finn-417768395 2. TypeScript Official Website:

    http://www.typescriptlang.org/ 3. Severus Snape Video: https://www.youtube.com/watch?v=PnOyBLT07R8 4. GitHub Icon: https://www.iconfinder.com/iconsets/ionicons 5. Twitter & LinkedIn Icons: https://www.iconfinder.com/iconsets/free-social-icons 6. Fonts: Segoe UI, SF Pro Text, Input Mono 7. Google Trends: https://g.co/trends/2M11R 8. TypeScript and JavaScript Logos: egghead.io 9. Stack Overflow 2017 Survey: https://insights.stackoverflow.com/survey/2017 10. TypeScript GIFs: http://twittervideodownloader.com/ & @typescriptlang 11. EdX Course: https://www.edx.org/course/introduction-typescript-2-microsoft-dev273x-0#! 12. List of Editors: https://www.wikiwand.com/en/TypeScript