/typescript-course

Primary LanguageTypeScript

TypeScript Course

Requirements

  • Optional: HTML, CSS, JS
  • Node.js and Npm
  • Console / Terminal Usage

Typescript Installation

  • to install: sudo npm install -g typescript
  • to verify installation: tsc -v
  • to install Typescript upgrade Node (TSUN): npm install -g tsun

Useful Commands

  • to transpile: tsc myfile.ts
    • all files: tsc *.ts
    • target Option: --target ES5
  • to execute your transpiled file: node myfile.js, because is js you can use it on whatever js enviroment

Considerations

  • Ts will generate an output JS, even with errors

More Info

  • (Typescript Github)[]
    • typescript components
  • compile or transpile?

Tools:

  • TS PlayGround
  • Intellisense
  • typescript(npm or yarn)
  • Visual Studio
  • vsCode

You can Learn from this Code

- transpile a .ts file to .js file
- basics
    - hello world
    - strong typing
    - syntatic sugar
    - types or optional static type annotation
    - scope variables
    - avoid type juggling
    - type coercion
- types
- ts added optional static type annotation to js
- transform it in a strongly typed programming language

  • functions

  • objects

  • ambient declarations

  • interfaces

  • clases: Person.ts

  • enums

  • modules

  • generic types

  • file extension .d.ts, third libs compatibility

  • type coercion

  • tsconfig.json

Appendix

  • how to debuggin ts file with vs Code
  • configure tsconfig.json
  • how to configure ts compiler with visual studio Code
    • go to "Open User Settings"
    • go to settings.json at "typescript.sdk", by default the property has the value null
    • obtain where is installed npm modules: npm root -g
    • append the path with /typescript/lib as SDK path
  • to configure a build task
    • to configure Tasks: Ctrl + shift + P > Tasks > Typescript
    • to execute: Ctrl/cmd + Shift + B
  • how to ignore js outputs from ts