📘 TypeScript Foundation Essentials
Welcome to my TypeScript learning journey! This repository captures hands-on practice, real-world examples, and notes on key TypeScript concepts from beginner to intermediate level.
| No. | Folder Name | Topic |
|---|---|---|
| 01 | 01-datatypes |
Basic Types, any, unknown, union |
| 02 | 02-functions |
Function declarations & returns |
| 03 | 03-interfaces |
Interface creation & usage |
| 04 | 04-type-alias |
Aliases using type keyword |
| 05 | 05-tuples |
Tuples in functions and variables |
| 06 | 06-classes |
Object-oriented programming basics |
| 07 | 07-constructors |
Parametrized & default constructors |
| 08 | 08-static-methods |
Static methods in classes |
| 09 | 09-access-modifiers |
public, private, protected |
| 10 | 10-inheritance |
extends, super & multi-level |
| 11 | 11-method-overloading |
Overloaded function signatures |
| 12 | 12-method-overriding |
Method replacement in subclasses |
| 13 | 13-maps |
Map object, iteration methods |
| 14 | 14-String-Methods |
Built-in string operations |
| 15 | 15-arrays |
Array methods: map, filter, etc. |
| 16 | 16-generics |
Generics in functions & classes |
| 17 | 17-enum |
enum types in TS |
| 18 | 18-union-types |
Handling multiple types |
| 19 | 19-Import and Export |
Module import/export with aliasing |
| 20 | 20-destructuring-spread |
Array/Object destructuring, spread |
| 21 | 21-async-await |
Asynchronous code & retries |
| 22 | 22-keyof-typeof |
Type operators for safety |
| 23 | 23-intersection-type |
Combining types |
| 24 | 24-discriminated-union |
Safe narrowing with type property |
| 25 | 25-this-keyword |
Contextual use of this |
| 26 | 26-narrowing-in-operator |
Type guards using "in" operator |
| 27 | 27-tsconfig-settings |
Compiler options explained |
- 🧠 Beginner-Friendly explanations with examples
- 🛠️ Practical tasks & mini use-cases
- ✅ Organized folder-wise for clarity
- 📄 Each folder includes
.tspractice files and aREADME.md(where needed)
- Clone the repository:
git clone https://github.com/RajatSharan/typescript-foundation-essentials.git
cd typescript-foundation-essentials- Install dependencies (optional for problem-solving):
npm install- Compile TypeScript code:
tsc- VS Code with extensions:
- ESLint
- Prettier
- TypeScript Toolbox
- Node.js installed
This is a self-paced learning repository, but feel free to fork or raise PRs for improvements or new challenges.