https://github.com/riascho/introductiontotypescript

My first play at TypeScript
https://github.com/riascho/introductiontotypescript

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My first play at TypeScript

• Host: GitHub
• URL: https://github.com/riascho/introductiontotypescript
• Owner: riascho
• Created: 2024-07-28T19:23:22.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-08-02T07:22:11.000Z (5 months ago)
• Last Synced: 2024-08-25T16:39:34.801Z (4 months ago)
• Language: TypeScript
• Homepage:
• Size: 4.88 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Introduction to TypeScript

This is just me following along this YouTube Tutorial on TypeScript.

https://www.youtube.com/watch?v=SpwzRDUQ1GI

## Summary

Concepts learnt and practiced:

### `type.ts`

- **Type Aliases**: `type Address` and `type Person` define custom types.

- **Optional Properties**: The address property in Person is optional, denoted by `address?: Address`.

- **Object Type Annotations**: Variables `person1` and `person2` are annotated with the `Person` type.

- **Nested Objects**: `person2` includes a nested address object of type `Address`.

- **Optional Chaining**: The commented `displayInfo` function uses optional chaining (`person1.address?.city`) to safely access nested properties.

- **Array of Custom Types**: `people` is an array of `Person` objects.

- **Literal Types**: `myName` is a literal type that can only hold the value "Joe".

- **Union Types**: The `User` type (partially shown) allows for multiple types.

### `pizza.ts`

- **Union Types**: The `getPizzaDetail` function uses a union type (`number | string`) for the `identifier` parameter.

- **Type Aliases**: `type Pizza` and `type Order` define custom types for pizzas and orders.

- **Generics**: The `addToArray` function is a generic function that can handle arrays of any type.

- **Optional Properties**: The `Omit` utility type is used in `addNewPizza` to create a new pizza without specifying the `id`.

- **Type Assertions**: Type assertions are used to specify the type of items being added to arrays.

- **Array Methods**: Methods like `find` and `push` are used to manipulate arrays.

- **Error Handling**: Custom error messages are thrown when invalid identifiers or orders are encountered.

- **Incrementing Counters**: Variables like `pizzaIdCounter` and `orderIdCounter` are used to generate unique IDs.

- **Enums**: The `status` property in the `Order` type uses a union of string literals to represent order statuses.

- **Destructuring**: The spread operator (`...pizza`) is used to create new pizza objects with additional properties.

- **Function Overloading**: The `getPizzaDetail` function demonstrates function overloading by handling different types of identifiers.

- **Logging**: `console.log` is used to output the menu, cash in register, and order queue.

- **Object.assign**: `Object.assign` is used to merge multiple pizza objects into one.