sancg / typescript-hero

An incremental learning curve on typos

Typescript

In this repo you will find step by step learning on typos. As and entry-level learning process.

Development

Initializing a project w/ typescript con auto-update and predefined configuration:

npx tsc --init --sourceMap --rootDir src --outDir dist

Methods to debug and run TS files:

1. Library to transpiled the typescripts files w/ node from Backend development: TS-Node
2. Run and debug VS-code.
   1. Create a launch.json file → Node.js
   2. Transpiled the TS files (optional: npx tsc --watch)

Topics covered in this repo 🪲

Basic

• Primitive typos:
  • Number, boolean, String, Array
• Special data types:
  • Any, union type
  • Aliases | Literal types
  • Null or undefined
  • Functions
  • Return values
  • Objects inside Functions
  • Objects as types
  • Modules

Starting point

A used case of typescript:

let productPrice = 100; //Inference type of number
let productStock: number; // Declarative without assigned value

// ❌ Bad practices
console.log(productStock); // Variable should have a value
productStock = productPrice + "It cannot sum"; // Only accepts numbers

For more in-depth of this topics I will write down each use case on the notes folder.

Feel free to share your knowledged in Typos 🧘🏻‍♂️