Intro -- Cover Page -- Title Page -- Copyright Page -- Dedication Page -- About the Author -- Technical Reviewers -- Acknowledgements -- Preface -- Errata -- Table of Contents -- 1. Introduction to TypeScript and its Benefits -- Introduction -- Structure -- Introduction to TypeScript -- A short history of TypeScript -- Main components of TypeScript -- TypeScript’s type system -- Advantages of using TypeScript -- Catching bugs -- Readability -- Refactoring -- Future language features -- Disadvantages of TypeScript -- The ways in which TypeScript prevents bugs -- Steps to begin using TypeScript -- Type-driven development -- Conclusion -- References -- 2. Setting up a Development Environment -- Introduction -- Structure -- Installing dependencies -- Version numbers -- Installing Node.js On Windows -- Installing Node.js on Mac -- Installing a code editor -- Installing TypeScript globally -- Creating a new TypeScript project -- The tsconfig.json file -- Installing TypeScript locally to a project -- Configuring TypeScript with tsconfig.json -- Default enabled configuration options -- target -- module -- esModuleInterop -- forceConsistentCasingInFileNames -- strict -- skipLibCheck -- Commonly used configuration options -- files -- include -- exclude -- baseUrl -- rootDir -- paths -- outDir -- resolveJsonModule -- Top-level configuration options -- Updating the project configuration -- Enabling TypeScript checking in JavaScript -- Default behavior -- Enabling type checking -- Adding JSDoc annotations -- Example project structure and use -- Conclusion -- References -- 3. Basic Type Annotations -- Introduction -- Structure -- Primitive types -- BigInt -- Boolean -- Number -- Null -- String -- Symbol -- Undefined -- The any type -- The unknown type -- The never type -- The as operator -- Down-casting -- Compound casting -- Older type-casting syntax.

Union types -- Literal types -- Literal union types -- Type aliases -- Type assertion -- Non-null assertion operator -- Conclusion -- References -- 4. Using the TypeScript Compiler -- Introduction -- Structure -- Compiling our TypeScript files -- Inspecting compiled files -- CLI flags -- --version -- --listFilesOnly -- --showConfig -- --help -- Using watch mode -- watchFile -- watchDirectory -- fallbackPolling -- synchronousWatchDirectory -- excludeDirectories -- excludeFiles -- assumeChangesOnlyAffectDirectDependencies -- Environment variables -- Building projects -- Build-specific flags -- Integrating with other build tools -- Integrating with webpack -- TypeScript webpack configuration -- Using third-party libraries -- Generating .d.ts files -- Generating d.ts files from .js files -- Conclusion -- References -- 5. Enums, Interfaces, and Namespaces -- Introduction -- Structure -- Interfaces -- Interface merging -- Extending interfaces -- Namespaces -- Namespace merging -- Enums -- Numeric enums -- Reverse mapping -- Exhaustiveness and the never type -- String enums -- Heterogeneous enums -- Computed and constant enums -- Literal enums -- Inlining enums -- Using the keyof operator -- Conclusion -- References -- 6. Objects, Arrays, and Tuples in TypeScript -- Introduction -- Structure -- Arrays -- Array type inference -- Read-only arrays -- Tuples -- Optional elements in tuples -- Rest elements in tuples -- Read-only tuples -- Object types -- Property modifiers -- Index signatures -- Intersections -- Generic object types -- Readonly utility type -- Conclusion -- References -- 7. Functions in TypeScript -- Introduction -- Structure -- Parameter Type and Return Type Annotations -- Type Inference for Functions -- Arrow Functions -- Type Inference for Arrow Functions -- Optional Parameters -- Rest Parameters -- Rest Arguments -- Destructured Parameters.

Void return type -- Function Type Expressions -- Call signatures -- Function Type Interfaces -- This Parameter -- Function overloads -- Overloading Arrow Functions -- Generator functions -- Generic functions -- Generic Function Constraints -- Conclusion -- References -- 8. Classes in TypeScript -- Introduction -- Structure -- Class Declarations -- Class Expressions -- Constructors -- Constructor Overloading -- Parameter Properties -- Access Modifiers -- Private Members in JavaScript -- Getters and Setters -- This Parameter -- Index Signatures -- Implementing an Interface -- Static Class Members -- Static Blocks -- Inheritance -- Abstract Classes -- Abstract Properties -- Abstract Methods -- Generic Classes -- Decorators -- TypeScript Design Patterns -- Conclusion -- References -- 9. Control Flow Analysis -- Introduction -- Structure -- Narrowing -- Widening -- Type Guards -- Truthiness Type Guards -- Narrowing with Typeof -- Handling null Values -- Narrowing with Instanceof -- Narrowing with the in Operator -- Narrowing with Type Predicates -- Discriminated Unions -- Assertion Functions -- Using as const -- Conclusion -- References -- 10. Manipulating Types -- Introduction -- Structure -- Generics -- Generic Interfaces -- Generic Types -- Generic Classes -- Generic Functions -- Conditional Types -- Indexed Access Types -- Mapped Types -- Adding and Removing Property Modifiers -- Remapping Property Keys -- Template Literal Types -- Capitalize -- Uncapitalize -- Uppercase -- Utility Types -- Awaited -- ConstructorParameters -- Exclude -- Extract -- InstanceType -- NonNullable -- Omit -- OmitThisParameter -- Partial -- Parameters -- Pick -- Readonly -- Record -- Required -- ReturnType -- ThisParameterType -- ThisType -- Conclusion -- References -- 11. TypeScript Modules -- Introduction -- Structure -- Modules in TypeScript.

Importing and exporting modules -- Type-only imports and exports -- Compiled modules -- Module-related configuration options -- Module -- Module resolution -- Base URL -- Paths -- Rootdirs -- Type roots -- Module suffixes -- Resolve JSON module -- Module resolution -- Compiler directives -- Reference path -- Reference types -- Reference lib -- No default lib -- AMD module -- AMD dependency -- Barrel files -- Nested barrels -- Augmenting modules -- Conclusion -- References -- 12. Creating Declaration Files -- Introduction -- Structure -- Creating declaration files -- Declaring global libraries -- Enhancing Intellisense with JSDoc -- Declaring global functions and variables -- Augmenting built-ins -- Declaring modular libraries -- Declaring default exports -- Declaring classes -- Declaring CommonJS modules -- Declaring UMD modules -- Publishing declarations -- Publishing with the library -- Publishing to Definitely Typed -- Testing types -- Conclusion -- References -- 13. Building a Conference App with Angular and TypeScript -- Introduction -- Structure -- Getting started -- Running build tasks -- Unit tests -- Linting -- Serving the application -- Creating the application shell -- Creating a data model -- Adding views -- Home view -- Adding routing -- Building the add-conference view -- Adding the conferences view -- Changing the default locale -- Adding a page not found component -- Handling data -- Unit testing -- Continuing with the example application -- Conclusion -- References -- Index.