TypeScript 3.4 introduced several new features including an incremental flag for faster builds, support for converted 'named' parameters during refactoring, marking arrays and tuples as readonly, using const assertions to assert types, and a globalThis object for global scope references. The document also discusses transpiling TypeScript to JavaScript, features from ES2016 through ES2018, and links to resources about the json2csv library and Thiago da Silva Adriano's GitHub profile.

1. TypeScript 3.4

2. Microsoft (MVP)
Thiago da Silva Adriano
Arquiteto de Software na TV Band
Autor Técnico e Palestrante
Organizador dos meetups

3. /perfil/thiagoadriano
programadrianotadriano.net
programadriano
programadriano
Contatos
Blogs

4. Contatos

5. Agenda
▸ TypeScript 3.4
▸ Incremental flag
▸ Converted name parameters
▸ ReadOnly {Array/Tuplas}
▸ Const assertions
▸ GlobalThis

7. Transpiling
TypeScript
app.ts
JavaScript
app.js
TypeScript Compiler
tsc app.ts

8. 8

9. 9

10. TypeScript
ES2018
ES2017
ES2016

11. 11

12. 12

13. Incremental flag

15. tsc -w -diagnostics

17. tsconfig.tsbuildinfo

20. readonly {Array/tuplas}

21. ReadonlyArray<T>

22. ReadonlyArray<T>

23. Readonly

24. Readonly com tuplas

27. https://www.npmjs.com/package/json2csv
json2csv

28. converted ‘named ‘parameters
Refactoring

32. const assertions

33. y = 10; Vai dar ruim ?

34. globalThis

35. Escopo Global no JavaScript
● Window
● self
● frames globalThis

37. GitHub: https://github.com/programadriano/build_campinas