Exercise-typeof

Who-is-the-course-for-and-prerequisites

Narrowing-via-typeof-Type-Guard

Intro-to-Type-Narrowing

Welcome

Narrowing-via-Truthiness

What-will-you-learn-in-this-course

Exercise-Narrowing-via-Truthiness

Answers-Narrowing-via-Truthiness

Narrowing-via-Equality-Checking

Answers-typeof

Exercise-Narrowing-via-Equality-Checking

Answers-Narrowing-via-Equality-Checking

Narrowing-via-the-in-Operator

Exercise-Narrowing-via-the-in-Operator

Answer-Narrowing-via-the-in-Operator

Narrowing-via-instanceOf

Exercise-Narrowing-via-instanceOf

Exercise-Narrowing-via-Control-Flow

Narrowing-via-Control-Flow

Answers-Narrowing-via-instanceOf

Answers-Narrowing-via-Control-Flow

Exercise-Narrowing-via-a-Type-Predicate

Narrowing-via-a-Type-Predicate

Answers-Narrowing-via-a-Discriminated-Union

Exercise-Narrowing-via-a-Discriminated-Union

Answers-Narrowing-via-a-Type-Predicate

Narrowing-via-a-Discriminated-Union

Narrowing-via-an-Assertion-Function

Exercise-Narrowing-via-an-Assertion-Function

Exercise-Narrowing-via-Exhaustiveness-Checking

Answers-Narrowing-via-an-Assertion-Function

Answers-Narrowing-via-Exhaustiveness-Checking

Narrowing-via-Exhaustiveness-Checking

Exercise-Narrowing-via-satisfies

Narrowing-via-satisfies

Answer-Narrowing-via-satisfies

Exercise-Narrowing-via-a-Type-Assertion

Narrowing-via-a-Type-Assertion

Answer-Narrowing-via-a-Type-Assertion

Narrowing-via-a-Non-null-Assertion

Exercise-Narrowing-via-a-Non-null-Assertion

Answers-Narrowing-via-a-Non-null-Assertion

Exercise-Typing-this

Answers-Typing-this

Typing-this

Summary

Pick-and-Omit

Exercise-Pick-and-Omit

Answers-Pick-and-Omit

Intro-to-Utility-Types

Exercise-Partial

Answers-Partial

Exercise-Required

Required

Answers-Required

Partial

Exercise-Readonly-and-ReadonlyArray

Answers-Readonly-and-ReadonlyArray

Exercise-Exclude

Exclude

Answers-Exclude

Exercise-Extract

Readonly-and-ReadonlyArray

Answers-Extract

String-Manipulation-Utilities

Exercise-String-Manipulation-Utilities

Answers-String-Manipulation-Utilities

Built-in-Utility-Types-Summary

Other-Built-in-Utility-Types

Exercise-Implementing-Generics

Third-Party-Utility-Types

Intro-to-Implementing-Generics

Generic-Function-Types

Answers-Implementing-Generics

Answers-Generic-Function-Types

Generic-Interfaces

Answers-Generic-Interfaces

Exercise-Generic-Interfaces

Generic-Classes

Answers-Generic-Classes

Exercise-Generic-Classes

Generic-Constraints-via-Extends

Exercise-Generic-Constraints-via-Extends

Answers-Generic-Constraints-via-Extends

Const-Modifier

Exercise-Const-Modifier

Exercise-Generic-Function-Types

Answers-Const-Modifier

Default-Type-Arguments

Exercise-Default-Type-Arguments

Answers-Default-Type-Arguments

Exercise-Pushing-Type-Params-Down

Answers-Pushing-Type-Params-Down

Generics-Best-Practices

Exercise-Eliminating-Needless-Type-Arguments

Exercise-Implement-a-Mapped-Type

Intro-to-Mapped-Types

Answers-Implement-a-Mapped-Type

Answers-Eliminating-Needless-Type-Arguments

Exercise-Template-Literal-Types

Template-Literal-Types

Answers-Template-Literal-Types

keyof

Pushing-Type-Params-Down

Exercise-keyof

Answers-keyof

Exericse-typeof

Answers-typeof- 2

Indexed-Access

typeof

Exercise-Indexed-Access

Answers-Indexed-Access

Exercise-Conditional-Types

Conditional-Types

Extract

Exercise-infer

Answers-Conditional-Types

infer

Answers-infer

Exercise-Looping-via-the-in-Operator

Looping-via-the-in-Operator

Answers-Looping-via-the-in-Operator

Exercise-Remapping-Properties-via-as

Remapping-Properties-via-as

Recursion-in-Mapped-Types

Answers-Remapping-Properties-via-as

Exercise-Recursion-in-Mapped-Types

Answers-Recursion-in-Mapped-Types

JS-vs-TS-Syntax-Comparision

Intro-to-Utility-Types- 2

Exercise-MyPartial

Answers-MyPartial

Exercise-MyRequired

Answers-MyRequired

Answers-MyReadonly

Exercise-MyPick

Answers-MyPick

Exercise-MyRecord

Exercise-MyReadonly

Answers-MyRecord

Exercise-MyExclude

Answers-MyExclude

Exercise-MyOmit

Exercise-MyExtract

Answers-MyExtract

Exercise-MyNonNullable

Exercise-RecursivePartial

Answers-MyNonNullable

Answers-RecursivePartial

Intro-to-Runtime-Validation

Exercise-Declaring-Zod-Schemas

Declaring-Zod-Schemas

Answers-Declaring-Zod-Schemas

Nullable-and-Optional

Zod-Utility-Types

Implementing-Custom-Validation-via-Refine

Validating-URL-Params-via-Zod

Validating-at-Runtime-in-Web-Apps

Answers-MyOmit

Validating-localStorage-via-Zod

Validating-a-File-via-Zod

Validating-Environment-Variables-via-Zod

Suggested-Next-Steps

Understanding-Decorator-Implementations

Validating-Forms-via-Zod

Intro-to-Decorators

Context-Parameter

Typing-Decorators-and-Invocation-Order

Decorating-Methods

Exercise-Decorating-Methods

Answers-Decorating-Methods

Decorating-Getters-and-Setters

Exercise-Decorating-Getters-and-Setters

Answers-Decorating-Getters-and-Setters

Exercise-Decorating-Fields

Validating-API-Responses-via-Zod

Decorating-Fields

Answers-Decorating-Fields

Answers-Decorating-Classes

Exercise-Decorating-Classes

Implementing-Universal-Decorators

Decorating-Classes

Accepting-Arguments-via-a-Decorator

Exercise-Accepting-Arguments-via-a-Decorator

Composing-Multiple-Decorators

Answers-Accepting-Arguments-via-a-Decorator

Exercise-Composing-Multiple-Decorators

Answers-Composing-Multiple-Decorators

Intro

Decorator-Tradeoffs

Exercise-Accepting-Random-Strings-via-Loose-Autocomplete

Answer-Accepting-Random-Strings-via-Loose-Autocomplete

Named-Tuples

Exercise-Named-Tuples

Accepting-Random-Strings-via-Loose-Autocomplete

Type-only-Imports-and-Exports

Answer-Named-Tuples

Understanding-Optional-Keys-vs-Optional-Values

Handling-Excess-Properties

Typing-Object.keys

Working-with-Evolving-anys

Naming-Values-and-Types-the-Same

Disabling-TypeScript-via-Comments

Working-with-JS-Array-Methods

Exercise-Simulating-Nominal-Types-via-Branded-Types

Typing-Symbols

Simulating-Nominal-Types-via-Branded-Types

Answers-Simulating-Nominal-Types-via-Branded-Types

Exercise-Testing-Types

Testing-Types

Answers-Testing-Types

Answers-Using-JSDocs-to-Type-JS-Files

Using-JSDocs-to-Type-JS-Files

Intro-to-tsconfig-Settings

Exercise-Using-JSDocs-to-Type-JS-Files

Avoiding-Configuring-From-Scratch

Configuring-TypeScript-for-the-Strictest-Settings

Debugging-via-Sourcemaps

Optimizing-for-Performance

Intro- 2

Typing-Errors-Effectively

Linting-TypeScript

Generating-Types

Wrap-up-and-Next-Steps