Introduction to TypeScript



Introduction to TypeScript

1.1 What is TypeScript?

  • Introduction to TypeScript
  • History of TypeScript
  • Why TypeScript was created
  • Features of TypeScript
  • TypeScript vs JavaScript

1.2 Benefits of TypeScript

  • Strong Typing
  • Better Code Quality
  • Improved Readability
  • Enhanced Maintainability
  • Early Error Detection
  • Better IDE Support (IntelliSense)
  • Easier Refactoring

1.3 Installing TypeScript

  • Install Node.js
  • Install Visual Studio Code
  • Install TypeScript Compiler (tsc)
  • Verify Installation
  • TypeScript Playground

1.4 First TypeScript Program

  • Create a TypeScript file
  • Compile TypeScript to JavaScript
  • Execute JavaScript using Node.js
  • Understanding Generated JavaScript

1.5 TypeScript Compiler (tsc)

  • What is tsc?
  • Compilation Process
  • Compile Single File
  • Compile Multiple Files
  • Watch Mode
  • Generate Source Maps

1.6 Understanding tsconfig.json

  • What is tsconfig.json?
  • Creating tsconfig.json
  • Important Compiler Options
    • target
    • module
    • rootDir
    • outDir
    • strict
    • noImplicitAny
    • sourceMap
    • moduleResolution
    • esModuleInterop

1.7 TypeScript Project Structure

  • Recommended Folder Structure
  • src Folder
  • dist Folder
  • node_modules
  • package.json
  • tsconfig.json

1.8 Running TypeScript Applications

  • Using Node.js
  • Using ts-node
  • Using npm Scripts

1.9 TypeScript Development Workflow

  • Write Code
  • Compile Code
  • Fix Compilation Errors
  • Execute Application
  • Debug Application

1.10 TypeScript in Modern Frameworks

  • Angular
  • React
  • Node.js
  • Playwright
  • NestJS

1.11 Advantages in Automation Testing

  • Why Playwright uses TypeScript
  • Benefits over JavaScript
  • Compile-time Error Checking
  • Better Auto Completion
  • Easier Framework Development

1.12 Hands-on Lab

  • Install Node.js & VS Code
  • Install TypeScript
  • Create First TypeScript Project
  • Configure tsconfig.json
  • Compile and Run Program

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