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TypeScript Syllabus.md

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TypeScript Syllabus.md

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  1. Introduction to TypeScript
  • What is TypeScript?
  • History and Evolution
  • Why Use TypeScript?
    • Benefits over JavaScript
    • Type Safety & Static Typing
    • Readability & Maintainability
    • Improved Developer Experience
  • JavaScript vs TypeScript
    • Key Differences
    • Pros and Cons
  • Course Prerequisites
  1. Setting Up TypeScript
  • Installing TypeScript
    • npm install -g typescript
    • Verifying: tsc --version
  • TypeScript Compiler Setup
    • tsconfig.json, compiler options
  • Running TS Files: tsc file.ts, tsc -w
  • Using with Node.js: ts-node, tsconfig-paths
  • Static vs Dynamic Typing
  • Code Execution Flow
  • Transpilation & Compilation
  • TypeScript + HTML
  • Using TypeScript with: Webpack, Vite, Parcel
  1. TypeScript Basics
  • Type Inference & Annotation
  • Core Types:
    • string, number, boolean, object, any, unknown, never, undefined, null
    • Literal Types, Union (|), Intersection (&)
  • Arrays, Tuples (optional, readonly)
  • Type Aliases
  • Enums (enum, const enum)
  • Type Assertions: as, <Type>
  • Functions:
    • Return Types (void)
    • Optional, Default, and Rest Parameters
    • Arrow Functions
    • Function Overloading
  1. Object-Oriented Programming
  • Classes & Constructors
  • Public / Private / Protected
  • Readonly, Getters & Setters
  • Inheritance & Overriding
  • Abstract Classes
  • Static Methods & Props
  • instanceof Usage
  1. Interfaces & Type System
  • Interface(for object)
  • Optional & Readonly Props
  • Extending Interfaces (Extending multipal interfaces)
  • Interface Merging
  • Interface implements on the class
  • Function Types with Interfaces
  • Index Signatures (Interface for Array Type)
  • Structural/Duck Typing
  • Interfaces vs Type Aliases
  • Interfaces vs Abstract Classes
  1. Advanced TypeScript
  • Generics:
    • Functions, Interfaces, Classes
    • Constraints and Defaults
  • Type Guards:
    • typeof, instanceof, Custom Guards
  • Discriminated Unions
  • Mapped Types
  • Conditional Types
  • Utility Types:
    • Partial, Required, Readonly, Pick, Omit, Record, Exclude, Extract, NonNullable
  • Template Literal Types
  • keyof, typeof, in Usage
  1. Decorators
  • What Are Decorators?
  • Enabling Decorators via tsconfig.json
  • Decorator Factories
  • Types of Decorators:
    • Class
    • Property
    • Method
    • Accessor
    • Parameter
  • Real-World Examples:
    • Angular
    • NestJS
    • Logging, Metadata, DI
  1. Modules & Namespaces
  • ES Modules:
    • Named / Default Exports
    • Import Variants
  • Namespaces (legacy use)
  • Module Resolution
  • Path Aliases
  1. Error Handling & Debugging
  • try / catch / finally
  • Custom Errors
  • Type Narrowing with Errors
  • Debugging TS in VSCode: console.log(), debugger, VSC breakpoints
  • Source Maps
  1. TypeScript in Frontend Frameworks
  • React + TS: React.FC, Props, State
  • Angular + TS: Decorators, DI, Modules
  • Vue + TS: Composition API, SFCs
  • Project Setup:
    • Vite + TS
    • CRA + TS
    • Webpack Manual Config
  1. TypeScript in Backend Development
  • Node.js + TypeScript
  • Express + TS Setup
  • Typing Middlewares & Routes
  • Validation Tools: Zod, Joi
  • Working with ORMs:
    • Prisma
    • TypeORM
  • Type-safe Services & Controllers
  • REST + GraphQL
  1. Tooling, Testing, and Best Practices
  • Linting: ESLint + TypeScript Plugin
  • Formatting: Prettier
  • Clean Code Principles
    • Avoiding any
    • Modular Typing
  • Testing:
    • Jest + TypeScript
    • Mocks / Type-safe Tests
  • Best Practices:
    • Always use strict
    • Favor Interfaces
    • Use Generics for Reuse
    • Immutability
    • Type-First Development

https://www.typescriptlang.org/docs/handbook/2/basic-types.html https://www.tutorialsteacher.com/typescript/typescript-overview https://www.typescripttutorial.net/