1
Introduction to TypeScript
Understand why TypeScript exists and how it improves JavaScript. Learn the fundamentals of TypeScript setup and configuration.
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Learning objectives:
• • Understand what TypeScript is and its benefits
• • Learn how TypeScript differs from JavaScript
• • Set up TypeScript development environment
• • Create your first TypeScript program
• • Understand TypeScript compilation process
2
TypeScript Basics
Learn syntax and core building blocks of TypeScript including variables, data types, and type annotations.
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Learning objectives:
• • Master TypeScript file structure
• • Understand variable declarations (let, const)
• • Learn basic data types (number, string, boolean, null, undefined, any)
• • Understand type inference and type annotations
• • Learn about strict mode
3
Operators & Control Flow
Control logic using conditions and operators. Learn about arithmetic, comparison, logical operators, and conditional statements.
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Learning objectives:
• • Master arithmetic, comparison, and logical operators
• • Understand conditional statements (if, else, switch, ternary)
• • Learn type narrowing with conditions
• • Apply control flow in TypeScript
4
Functions in TypeScript
Write safe and predictable functions with proper typing, parameters, and return types.
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Learning objectives:
• • Master function syntax and parameter types
• • Understand return types (void, never)
• • Learn optional, default, and rest parameters
• • Understand arrow functions and function overloading
5
Arrays & Tuples
Work with collections safely using typed arrays and tuples.
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Learning objectives:
• • Understand array type syntax and generics
• • Learn about readonly arrays
• • Master tuple types and their use cases
• • Understand tuple vs array differences
6
Objects & Type Aliases
Structure data clearly using object types and type aliases.
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Learning objectives:
• • Master object type definitions
• • Understand type aliases
• • Learn optional and readonly properties
• • Work with nested objects and index signatures
7
Enums & Literal Types
Restrict values and improve readability using enums and literal types.
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Learning objectives:
• • Understand numeric and string enums
• • Learn about const enums
• • Master literal types and union of literals
• • Compare enums vs union types
8
Union & Intersection Types
Combine and restrict types effectively using union and intersection types with type guards.
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Learning objectives:
• • Master union types (|) and intersection types (&)
• • Understand type guards (typeof, in, instanceof)
• • Learn custom type guards
• • Apply type narrowing techniques
9
Interfaces
Build scalable type contracts using interfaces for objects, functions, and classes.
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Learning objectives:
• • Understand what interfaces are
• • Master interface definitions and properties
• • Learn interface inheritance
• • Implement interfaces in classes
• • Use interfaces for API response models
10
Classes & OOP in TypeScript
Master object-oriented programming with TypeScript classes, inheritance, and access modifiers.
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Learning objectives:
• • Create classes with constructors
• • Understand access modifiers (public, private, protected)
• • Learn getters, setters, and inheritance
• • Master abstract classes and static members
11
Generics
Write reusable, type-safe code using generics for functions, interfaces, and classes.
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Learning objectives:
• • Understand what generics are and why they matter
• • Master generic functions, interfaces, and classes
• • Learn multiple type parameters and constraints
• • Apply generics in real-world scenarios
12
Advanced Types
Unlock TypeScript's real power with advanced type manipulation and utility types.
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Learning objectives:
• • Master keyof, typeof, and indexed access types
• • Understand mapped types and conditional types
• • Learn utility types (Partial, Required, Readonly, Pick, Omit, Record)
• • Apply advanced types in complex scenarios
13
Type Assertions & Type Casting
Work with external or unknown data safely using type assertions and casting.
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Learning objectives:
• • Understand type assertions (as syntax)
• • Learn when and when not to use type assertions
• • Work with DOM elements
• • Understand unknown vs any
14
Error Handling & Safety
Write robust and safe code with proper error handling and null safety.
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Learning objectives:
• • Understand compile-time vs runtime errors
• • Master try-catch in TypeScript
• • Learn custom error classes
• • Understand strict null checks and non-null assertions
15
Modules & Namespaces
Organize large applications using ES modules, imports, exports, and namespaces.
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Learning objectives:
• • Master ES modules in TypeScript
• • Understand import and export syntax
• • Learn module resolution and path aliases
• • Know when to use modules vs namespaces
16
TypeScript with JavaScript Projects
Migrate safely from JavaScript to TypeScript in existing projects.
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Learning objectives:
• • Use TypeScript in existing JS projects
• • Understand allowJs and checkJs
• • Learn JSDoc types
• • Master gradual migration strategy
• • Handle third-party libraries with DefinitelyTyped
17
TypeScript with Frontend Frameworks
Use TypeScript in real frontend applications with React, Angular, and Vue.
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Learning objectives:
• • Use TypeScript with DOM
• • Master TypeScript with React (props, state, events)
• • Understand TypeScript with Angular and Vue
• • Apply TypeScript in frontend development
18
TypeScript with Backend (Node.js)
Build backend applications using TypeScript with Node.js and Express.
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Learning objectives:
• • Set up TypeScript with Node.js
• • Master Express with TypeScript
• • Type request and response objects
• • Understand middleware typing
• • Work with environment variables
19
Tooling & Best Practices
Write professional TypeScript code with proper tooling and best practices.
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Learning objectives:
• • Set up ESLint and Prettier with TypeScript
• • Use ts-node for development
• • Understand build and production setup
• • Learn project folder structure
• • Apply type safety best practices
20
Real-World Projects
Apply everything learned through practical projects and code reviews.
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Learning objectives:
• • Build a type-safe calculator
• • Create a user management system
• • Develop a REST API with TypeScript
• • Build a frontend app with TypeScript
• • Review and optimize code