Learning TypeScript Enhance Your Web Development Skills Using Type Safe JavaScript 1st Edition by Josh Goldberg ISBN 9781098110338 1098110331

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Product details:

ISBN 10: 1098110331
ISBN 13: 9781098110338
Author: Josh Goldberg

Learning TypeScript Enhance Your Web Development Skills Using Type Safe JavaScript 1st Edition Table of contents:

I. Concepts

1. From JavaScript to TypeScript

History of JavaScript

Vanilla JavaScript’s Pitfalls

Costly Freedom

Loose Documentation

Weaker Developer Tooling

TypeScript!

Getting Started in the TypeScript Playground

TypeScript in Action

Freedom Through Restriction

Precise Documentation

Stronger Developer Tooling

Compiling Syntax

Getting Started Locally

Running Locally

Editor Features

What TypeScript Is Not

A Remedy for Bad Code

Extensions to JavaScript (Mostly)

Slower Than JavaScript

Finished Evolving

Summary

2. The Type System

What’s in a Type?

Type Systems

Kinds of Errors

Assignability

Understanding Assignability Errors

Type Annotations

Unnecessary Type Annotations

Type Shapes

Modules

Summary

3. Unions and Literals

Union Types

Declaring Union Types

Union Properties

Narrowing

Assignment Narrowing

Conditional Checks

Typeof Checks

Literal Types

Literal Assignability

Strict Null Checking

The Billion-Dollar Mistake

Truthiness Narrowing

Variables Without Initial Values

Type Aliases

Type Aliases Are Not JavaScript

Combining Type Aliases

Summary

4. Objects

Object Types

Declaring Object Types

Aliased Object Types

Structural Typing

Usage Checking

Excess Property Checking

Nested Object Types

Optional Properties

Unions of Object Types

Inferred Object-Type Unions

Explicit Object-Type Unions

Narrowing Object Types

Discriminated Unions

Intersection Types

Dangers of Intersection Types

Summary

II. Features

5. Functions

Function Parameters

Required Parameters

Optional Parameters

Default Parameters

Rest Parameters

Return Types

Explicit Return Types

Function Types

Function Type Parentheses

Parameter Type Inferences

Function Type Aliases

More Return Types

Void Returns

Never Returns

Function Overloads

Call-Signature Compatibility

Summary

6. Arrays

Array Types

Array and Function Types

Union-Type Arrays

Evolving Any Arrays

Multidimensional Arrays

Array Members

Caveat: Unsound Members

Spreads and Rests

Spreads

Spreading Rest Parameters

Tuples

Tuple Assignability

Tuple Inferences

Summary

7. Interfaces

Type Aliases Versus Interfaces

Types of Properties

Optional Properties

Read-Only Properties

Functions and Methods

Call Signatures

Index Signatures

Nested Interfaces

Interface Extensions

Overridden Properties

Extending Multiple Interfaces

Interface Merging

Member Naming Conflicts

Summary

8. Classes

Class Methods

Class Properties

Function Properties

Initialization Checking

Optional Properties

Read-Only Properties

Classes as Types

Classes and Interfaces

Implementing Multiple Interfaces

Extending a Class

Extension Assignability

Overridden Constructors

Overridden Methods

Overridden Properties

Abstract Classes

Member Visibility

Static Field Modifiers

Summary

9. Type Modifiers

Top Types

any, Again

unknown

Type Predicates

Type Operators

keyof

typeof

Type Assertions

Asserting Caught Error Types

Non-Null Assertions

Type Assertion Caveats

Const Assertions

Literals to Primitives

Read-Only Objects

Summary

10. Generics

Generic Functions

Explicit Generic Call Types

Multiple Function Type Parameters

Generic Interfaces

Inferred Generic Interface Types

Generic Classes

Explicit Generic Class Types

Extending Generic Classes

Implementing Generic Interfaces

Method Generics

Static Class Generics

Generic Type Aliases

Generic Discriminated Unions

Generic Modifiers

Generic Defaults

Constrained Generic Types

keyof and Constrained Type Parameters

Promises

Creating Promises

Async Functions

Using Generics Right

The Golden Rule of Generics

Generic Naming Conventions

Summary

III. Usage

11. Declaration Files

Declaration Files

Declaring Runtime Values

Global Values

Global Interface Merging

Global Augmentations

Built-In Declarations

Library Declarations

DOM Declarations

Module Declarations

Wildcard Module Declarations

Package Types

declaration

Dependency Package Types

Exposing Package Types

DefinitelyTyped

Type Availability

Summary

12. Using IDE Features

Navigating Code

Finding Definitions

Finding References

Finding Implementations

Writing Code

Completing Names

Automatic Import Updates

Code Actions

Working Effectively with Errors

Language Service Errors

Summary

13. Configuration Options

tsc Options

Pretty Mode

Watch Mode

TSConfig Files

tsc –init

CLI Versus Configuration

File Inclusions

include

exclude

Alternative Extensions

JSX Syntax

resolveJsonModule

Emit

outDir

target

Emitting Declarations

Source Maps

noEmit

Type Checking

lib

skipLibCheck

Strict Mode

Modules

module

moduleResolution

Interoperability with CommonJS

isolatedModules

JavaScript

allowJs

checkJs

JSDoc Support

Configuration Extensions

extends

Configuration Bases

Project References

composite

references

Build Mode

Summary

IV. Extra Credit

14. Syntax Extensions

Class Parameter Properties

Experimental Decorators

Enums

Automatic Numeric Values

String-Valued Enums

Const Enums

Namespaces

Namespace Exports

Nested Namespaces

Namespaces in Type Definitions

Prefer Modules Over Namespaces

Type-Only Imports and Exports

Summary

15. Type Operations

Mapped Types

Mapped Types from Types

Changing Modifiers

Generic Mapped Types

Conditional Types

Generic Conditional Types

Type Distributivity

Inferred Types

Mapped Conditional Types

never

never and Intersections and Unions

never and Conditional Types

never and Mapped Types

Template Literal Types

Intrinsic String Manipulation Types

Template Literal Keys

Remapping Mapped Type Keys

Type Operations and Complexity

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Tags: Josh Goldberg, Learning TypeScript, Web Development Skills, Type Safe JavaScript