Typescript Study Cards

Enhance Your Understanding with TypeScript Programming Concept Cards for quick learning



TypeScript

A superset of JavaScript that adds static typing and other features to help developers build large-scale applications.

Data Types

The different types of values that can be assigned to variables in TypeScript, such as number, string, boolean, etc.

Variables

Containers for storing data values, which can be declared using the 'let' or 'const' keyword in TypeScript.

Functions

Reusable blocks of code that perform a specific task. In TypeScript, functions can have parameter types and return types.

Classes

Blueprints for creating objects that encapsulate data and behavior. Classes in TypeScript support inheritance and interfaces.

Objects

Instances of classes that hold their own data and have access to the methods defined in the class.

Modules

Organizational units of code that can be imported and exported to create a modular and maintainable TypeScript application.

Namespaces

Logical containers that help organize code and prevent naming conflicts by providing a scope for identifiers.

Interfaces

Structural contracts that define the shape of an object. TypeScript interfaces can be used for type checking and code documentation.

Generics

A way to create reusable components that can work with multiple types. Generics in TypeScript enable type parameterization.

Decorators

A special kind of declaration that can be attached to classes, methods, properties, or parameters to modify their behavior.

Type Inference

The ability of TypeScript to automatically determine the type of a variable based on its initialization value.

Error Handling

Techniques for handling and reporting errors in TypeScript, such as try-catch blocks and throwing custom exceptions.

Asynchronous Programming

A programming paradigm that allows tasks to run concurrently and asynchronously. TypeScript provides async/await syntax for handling asynchronous operations.

TypeScript Compiler

The tool that converts TypeScript code into JavaScript code, enabling it to run in any JavaScript environment.

Debugging Techniques

Strategies and tools for identifying and fixing errors in TypeScript code, such as using breakpoints and console.log statements.

Best Practices

Guidelines and recommendations for writing clean, efficient, and maintainable TypeScript code.

Arrow Functions

A concise syntax for writing functions in TypeScript, using the '=>' arrow operator.

Type Assertions

A way to tell the TypeScript compiler that you know more about the type of a value than it does, allowing you to perform certain operations.

Type Guards

Conditional statements that narrow down the type of a value within a block of code, based on a type predicate.

Optional Chaining

A feature in TypeScript that allows you to safely access properties or call methods on an object that may be null or undefined.

Nullish Coalescing

A logical operator in TypeScript that returns the right-hand side operand if the left-hand side operand is null or undefined.

Tuple Types

An array-like structure in TypeScript that allows you to specify the types of each element, with a fixed number of elements.

Type Aliases

A way to create custom names for existing types in TypeScript, improving code readability and maintainability.

Intersection Types

A way to combine multiple types into a single type in TypeScript, representing objects that have all the properties of each constituent type.

Union Types

A way to specify that a value can have one of several types in TypeScript, using the '|' operator.

Type Predicates

Functions that return a type predicate, which is a boolean value indicating whether a value satisfies a certain type.

Type Reflection

The ability of TypeScript to inspect and manipulate the types of variables and other entities at runtime.

Type Compatibility

The rules that determine whether one type can be assigned to another type in TypeScript, based on their structure.

Type Query

A way to obtain the type of a variable or property in TypeScript, using the 'typeof' operator.

Type Narrowing

The process of reducing the type of a value within a block of code, based on certain conditions or operations.

Type Widening

The process of increasing the type of a value within a block of code, based on certain conditions or operations.

Type Annotations

Explicitly specifying the type of a variable or function parameter in TypeScript, using the ':' syntax.

Type Assertion

A way to tell the TypeScript compiler that you know more about the type of a value than it does, allowing you to perform certain operations.