TypeScript Programming Masterclass

Topics Covered

• What is programming? Introduction to software development
• JavaScript ecosystem: browsers, Node.js, runtime environments
• Why TypeScript? Benefits over plain JavaScript
• Installing Node.js and npm package manager
• Setting up development environment: VS Code with TypeScript extensions
• Understanding IDE features: IntelliSense, debugging, extensions
• Your first JavaScript program: Hello World
• JavaScript program structure: statements, expressions
• Running JavaScript in browser console and Node.js
• Comments: single-line (//), multi-line (/* */), documentation
• JavaScript coding conventions and naming standards
• Console methods: log, error, warn, table
• Introduction to ECMAScript versions (ES6+)

Topics Covered

• Variables: var, let, const - differences and best practices
• Primitive data types: string, number, boolean, null, undefined, symbol, bigint
• Type coercion: implicit and explicit conversion
• typeof operator for type checking
• Template literals and string interpolation
• Numbers: integers, floats, Infinity, NaN
• Operators: arithmetic (+, -, *, /, %, **, ++, --)
• Relational operators: ==, ===, !=, !==, >, <, >=, <=
• Logical operators: &&, ||, !, nullish coalescing (??)
• Assignment operators: =, +=, -=, *=, /=, %=
• Bitwise operators: &, |, ^, ~, <<, >>, >>>
• Ternary operator: ? :
• Operator precedence and associativity
• Optional chaining operator (?.) and its uses

Topics Covered

• Boolean expressions and truthy/falsy values
• If statement: single condition execution
• If-else statement: two-way branching
• If-else-if ladder: multiple conditions
• Nested if statements
• Switch statement: multi-way branching
• Switch with fall-through and break
• While loop: pre-tested loop
• Do-while loop: post-tested loop
• For loop: counter-based iteration

• For-of loop: iterating arrays/strings
• For-in loop: iterating object properties
• Break and continue statements
• Labeled statements for nested loops
• Function declarations and expressions
• Arrow functions: concise syntax
• Parameters, arguments, default parameters
• Rest parameters and spread operator
• Return statement and return values
• Function scope and hoisting

Topics Covered

• Arrays: declaration, creation, initialization
• Array indexing and accessing elements
• Array methods: push, pop, shift, unshift, splice
• Array iteration: forEach, map, filter, reduce
• Array methods: find, findIndex, some, every, includes
• Array sorting and reversing
• Spread operator with arrays
• Destructuring arrays
• Objects: creation and property access
• Object methods and 'this' keyword

• Object shorthand properties and methods
• Computed property names
• Object destructuring
• Spread operator with objects
• Object.keys(), Object.values(), Object.entries()
• JSON: parse and stringify
• Classes: declaration, constructor, methods
• Class inheritance: extends and super
• Static methods and properties
• Getters and setters

Topics Covered

• Introduction to TypeScript: static typing benefits
• TypeScript vs JavaScript: key differences
• Installing TypeScript globally and locally
• tsconfig.json configuration file
• Compiler options: target, module, strict mode
• Basic types: string, number, boolean
• Type annotations and type inference
• Arrays with type annotations
• Tuple types for fixed-length arrays
• Enum types: numeric and string enums

• Any type: when and when not to use
• Unknown type: safe alternative to any
• Void, null, and undefined types
• Never type for unreachable code
• Type assertions: as and angle-bracket syntax
• Literal types: string, number, boolean literals
• Union types: combining multiple types
• Type narrowing and type guards

Topics Covered

• Interface declaration and usage
• Optional properties with ?
• Readonly properties
• Index signatures for dynamic properties
• Interface extending other interfaces
• Implementing interfaces in classes
• Type aliases with 'type' keyword
• Interface vs type alias: when to use which
• Intersection types: combining types with &
• Discriminated unions for type safety

• Type guards: typeof, instanceof, in operator
• User-defined type guards with 'is' keyword
• Nullable types and strict null checks
• Optional chaining with types
• Nullish coalescing with types
• Function types and signatures
• Call signatures in interfaces
• Function overloading in TypeScript

Topics Covered

• Introduction to generics: type parameters
• Generic functions and type inference
• Generic interfaces
• Generic classes
• Generic constraints with extends
• Multiple type parameters
• Default type parameters
• Generic utility types: Partial, Required, Readonly
• Pick, Omit, Record utility types
• Extract, Exclude, NonNullable types

• ReturnType and Parameters utility types
• Conditional types with extends and infer
• Mapped types for transforming types
• Template literal types
• Keyof operator for type keys
• Typeof operator in type context
• Module systems: ES modules in TypeScript
• Declaration files (.d.ts) basics

Topics Covered

• HTML5 semantic elements and structure
• Forms, inputs, and validation attributes
• CSS fundamentals: selectors, specificity, cascade
• CSS Box Model and layout basics
• Flexbox for one-dimensional layouts
• CSS Grid for two-dimensional layouts
• Responsive design with media queries
• CSS custom properties (variables)
• CSS animations and transitions
• DOM manipulation: selecting elements

• DOM events: click, submit, input, keyboard
• Event delegation and bubbling
• Creating and modifying DOM elements
• Local Storage and Session Storage
• Fetch API for HTTP requests

Topics Covered

• Introduction to React: component-based architecture
• TypeScript with Vite
• Vite for React TypeScript projects
• JSX syntax and expressions
• Components: functional components
• Props: passing data to components
• TypeScript with React: typing props
• Children prop and composition
• Conditional rendering techniques
• Lists and keys in React

• Event handling in React
• TypeScript event types
• Styling: CSS modules, styled-components
• Tailwind CSS with React
• Component organization and file structure

Topics Covered

• useState hook for local state
• Typing useState with TypeScript
• useEffect hook for side effects
• Cleanup functions in useEffect
• useRef hook for DOM references
• useMemo for expensive calculations
• useCallback for memoizing functions
• useReducer for complex state logic
• Typing useReducer actions and state
• Custom hooks creation

• Rules of hooks
• useContext for prop drilling solution
• Creating typed context providers
• React.memo for component memoization
• Performance optimization strategies

Topics Covered

• Compound components pattern
• Render props pattern
• Higher-Order Components (HOCs)
• Custom hooks vs HOCs vs render props
• Controlled vs uncontrolled components
• Form libraries: React Hook Form
• Typing forms with TypeScript
• Form validation with Zod
• Error boundaries for error handling
• Suspense for data fetching

• React.lazy for code splitting
• Portal for modals and tooltips
• Forwarding refs with forwardRef
• useImperativeHandle hook
• Accessibility (a11y) in React

Topics Covered

• React Router v6 fundamentals
• BrowserRouter and Route components
• Link and NavLink for navigation
• Route parameters and useParams
• Query strings and useSearchParams
• Nested routes and Outlet
• Protected routes implementation
• useNavigate for programmatic navigation
• useLocation hook
• Route guards and authentication
• 404 and error pages
• Code splitting with routes
• Scroll restoration
• Route transitions and animations

Topics Covered

• State management overview and options
• Redux Toolkit fundamentals
• Creating slices with createSlice
• Redux store configuration
• useSelector and useDispatch hooks
• TypeScript with Redux Toolkit
• Async logic with createAsyncThunk
• RTK Query for data fetching
• Zustand: lightweight alternative
• Zustand with TypeScript

• Jotai: atomic state management
• React Query/TanStack Query
• Caching and background refetching
• Optimistic updates
• Comparing state management solutions

Topics Covered

• Testing pyramid: unit, integration, e2e
• Jest testing framework setup
• React Testing Library fundamentals
• Rendering components for testing
• Querying elements: getBy, findBy, queryBy
• User event simulation
• Testing forms and inputs
• Testing async operations
• Mocking API calls with MSW
• Testing hooks with renderHook

• Testing context providers
• Snapshot testing
• Code coverage reports
• Cypress for E2E testing
• Playwright introduction

Topics Covered

• Webpack fundamentals and configuration
• Vite: modern build tool
• Environment variables management
• Bundle analysis and optimization
• Tree shaking for dead code elimination
• Code splitting strategies
• Lazy loading components and routes
• Image optimization
• React DevTools profiler
• Performance measurement with Web Vitals

• React.memo and useMemo optimization
• Virtualization for long lists
• Service workers basics
• PWA fundamentals
• Lighthouse audits

Topics Covered

• Component libraries overview
• Material-UI (MUI) with TypeScript
• Chakra UI fundamentals
• Ant Design components
• Headless UI for unstyled components
• Radix UI primitives
• Shadcn/ui component system
• Theme customization
• Design tokens and theming
• Dark mode implementation

• Responsive design patterns
• Animation libraries: Framer Motion
• Building design systems
• Storybook for component documentation
• Component documentation best practices

Topics Covered

• Full frontend application architecture
• Component design and organization
• State management implementation
• Routing and navigation
• Form handling and validation
• API integration
• Testing strategy
• Performance optimization

Topics Covered

• Node.js architecture: event loop, non-blocking I/O
• Node.js vs browser JavaScript
• npm and package.json management
• CommonJS vs ES modules in Node
• TypeScript setup for Node.js
• Built-in modules: fs, path, os, url
• File system operations: read, write, delete
• Streams and buffers
• Event emitter pattern
• Process and environment variables

• Child processes and workers
• Nodemon for development
• ts-node for TypeScript execution
• Debugging Node.js applications
• Error handling in Node.js

Topics Covered

• Introduction to Express.js
• Express with TypeScript setup
• Routing: GET, POST, PUT, DELETE, PATCH
• Route parameters and query strings
• Request and response objects
• Middleware concept and implementation
• Built-in middleware: json, urlencoded, static
• Custom middleware creation
• Error handling middleware
• Router for modular routes

• Request validation with express-validator
• File uploads with Multer
• CORS configuration
• Helmet for security headers
• Rate limiting with express-rate-limit

Topics Covered

• REST architecture principles
• Resource naming conventions
• HTTP status codes usage
• Request/response design
• API versioning strategies
• Pagination implementation
• Filtering and sorting
• HATEOAS principles
• API documentation with Swagger/OpenAPI
• TypeScript types for API contracts

• Zod for runtime validation
• Error response standardization
• API testing with Postman/Insomnia
• API testing with supertest
• Contract-first API design

Topics Covered

• Relational database concepts
• SQL fundamentals: SELECT, INSERT, UPDATE, DELETE
• WHERE, ORDER BY, LIMIT, OFFSET
• JOINs: INNER, LEFT, RIGHT, FULL
• Aggregations: COUNT, SUM, AVG, GROUP BY
• Database design and normalization
• Primary keys and foreign keys
• Indexes for performance
• PostgreSQL setup and usage
• Node.js with pg driver

• Connection pooling
• Parameterized queries for security
• Transactions in Node.js
• Database migrations concept
• SQL injection prevention

Topics Covered

• ORM concepts and benefits
• Prisma setup and configuration
• Prisma schema definition
• Prisma Client for queries
• CRUD operations with Prisma
• Relations: one-to-one, one-to-many, many-to-many
• Prisma migrations
• Prisma with TypeScript
• Drizzle ORM introduction
• Drizzle schema and queries

• Type-safe queries with Drizzle
• Raw SQL with ORMs
• Seeding databases
• ORM performance considerations
• Choosing between ORMs

Topics Covered

• Authentication vs authorization
• Password hashing with bcrypt
• JWT (JSON Web Tokens) fundamentals
• Access tokens and refresh tokens
• JWT implementation in Express
• Passport.js authentication strategies
• Session-based authentication
• Cookie security: httpOnly, secure, sameSite
• Role-based access control (RBAC)
• Permission-based authorization

• OAuth 2.0 and OpenID Connect
• Social login: Google, GitHub, Facebook
• Two-factor authentication (2FA)
• Password reset flow
• Security best practices

Topics Covered

• NoSQL database concepts
• MongoDB architecture and documents
• MongoDB Atlas cloud setup
• Mongoose ODM for Node.js
• Mongoose schemas and models
• TypeScript with Mongoose
• CRUD operations with Mongoose
• Mongoose middleware (hooks)
• Population for references
• Aggregation pipeline

• Indexing in MongoDB
• Schema validation
• Embedded vs referenced documents
• MongoDB transactions
• SQL vs NoSQL: when to use which

Topics Covered

• Caching strategies overview
• Redis: in-memory data store
• Redis with Node.js (ioredis)
• Caching API responses
• Session storage with Redis
• Rate limiting with Redis
• Pub/Sub with Redis
• WebSocket fundamentals
• Socket.io for real-time communication
• TypeScript with Socket.io

• Real-time events and rooms
• Broadcasting messages
• Server-Sent Events (SSE)
• Long polling vs WebSocket
• Real-time architecture patterns

Topics Covered

• Email sending with Nodemailer
• Email templates with EJS/Handlebars
• Transactional email services: SendGrid, Resend
• Queue-based email sending
• File storage strategies
• AWS S3 for object storage
• Cloudinary for image management
• File upload to cloud storage
• Image processing with Sharp
• PDF generation in Node.js

• Payment integration: Stripe
• Webhook handling
• Third-party API integration
• API rate limiting and retries
• Error handling for external services

Topics Covered

• Backend testing strategies
• Unit testing with Jest
• Testing Express routes
• Supertest for HTTP testing
• Mocking database calls
• Integration testing setup
• Test database management
• Factory patterns for test data
• Testing authentication flows
• Testing async operations

• Code coverage for backend
• CI/CD testing pipeline
• Load testing with Artillery
• Performance testing basics
• End-to-end API testing

Topics Covered

• Logging best practices
• Winston logger configuration
• Pino for high-performance logging
• Log levels and formatting
• Structured logging (JSON)
• Request logging and tracing
• Application metrics with Prometheus
• Custom metrics collection
• Health check endpoints
• Error tracking with Sentry

• APM (Application Performance Monitoring)
• Distributed tracing basics
• OpenTelemetry introduction
• Monitoring dashboards
• Alerting strategies

Topics Covered

• OWASP Top 10 for Node.js
• SQL/NoSQL injection prevention
• XSS prevention strategies
• CSRF protection
• Security headers with Helmet
• Input sanitization
• Rate limiting implementation
• API key management
• Secrets management
• Environment security

• Dependency vulnerability scanning
• npm audit and fixes
• HTTPS and TLS
• Content Security Policy
• Secure file uploads

Topics Covered

• Docker fundamentals
• Dockerfile for Node.js apps
• Multi-stage builds
• Docker Compose for development
• Container orchestration basics
• Environment configuration
• Deploying to VPS (DigitalOcean, Linode)
• Process managers: PM2
• Nginx reverse proxy
• SSL certificates with Let's Encrypt

• CI/CD with GitHub Actions
• Deployment to Railway, Render
• Zero-downtime deployments
• Database backups
• Production checklist

Topics Covered

• Choosing the capstone: a full-stack typed application with shared types end to end
• A one-page spec: scope, milestones, stack
• Repository and skeleton ready on day one
• Instructor sign-off before the build begins

Topics Covered

• Two focused weeks in vertical slices
• Instructor checkpoints and honest scope cuts
• Using the whole course: the type system, typed React, typed Node and shared contracts
• Daily commits and an always-working build

Topics Covered

• The finishing pass: edge cases, errors, documentation
• Strict-mode clean: the compiler as your first reviewer
• A README worth reading and a demo worth watching
• A full-course spiral review before the exam

Topics Covered

• Presenting the capstone: live demo plus the hardest bug story
• The honest map of next roads: frontend depth, backend engineering, or full-stack product work
• Where our other courses continue the journey