Overview

TypeScript

Stacks105.1K

Followers74.2K

Votes503

GitHub Stars106.6K

Forks13.1K

Pyright

Stacks36

Followers31

Votes0

GitHub Stars14.9K

Forks1.7K

Pyright vs TypeScript: What are the differences?

Introduction: In the world of programming, developers often come across different languages tailored for specific purposes. Pyright and TypeScript are both popular among developers but serve distinct purposes.

Static vs. Dynamic Typing: One significant difference between Pyright and TypeScript is their approach to typing. Pyright is a static type checker for Python that analyzes code to detect type-related errors, providing benefits like improved code quality and enhanced tooling support. On the other hand, TypeScript is a statically typed superset of JavaScript that allows developers to define types for variables, function parameters, and return values, catching errors at compile time rather than runtime.
Compatibility: Another key difference lies in the languages they are associated with. Pyright is specifically designed for Python, enhancing the language with static type checking capabilities. In contrast, TypeScript is a standalone programming language that can be used to develop applications independently or transpile into JavaScript, offering a more versatile approach compared to Pyright's Python-centric focus.
Tooling and Integration: When it comes to tooling and integration, Pyright provides robust support for editors like Visual Studio Code to enhance the development experience for Python developers. TypeScript, on the other hand, comes with its compiler and language services that cater to JavaScript/TypeScript projects, offering a comprehensive ecosystem for building modern web applications.
Community Support and Adoption: While both Pyright and TypeScript have active communities backing them, TypeScript boasts broader adoption and industry support due to its ties with JavaScript, making it a preferred choice for frontend and backend developers alike. Pyright, being more niche-oriented for Python, may have a smaller but dedicated user base within the Python community.
Language Features and Syntax: Pyright focuses on enhancing Python's type system with type annotations, generics, and type inference, while TypeScript introduces features like interfaces, union types, enums, and more to the JavaScript ecosystem. These language-specific features differentiate the capabilities and expressiveness of Pyright and TypeScript.
Performance and Compilation: In terms of performance, Pyright's static type checking may introduce overhead during development but can lead to fewer errors and improved code quality in the long run. TypeScript, with its compile-time type checking and transpilation to JavaScript, offers a balance between type safety and runtime performance, catering to developers seeking a robust, scalable solution.

In Summary, Pyright and TypeScript differ in their typing approach, language compatibility, tooling support, community adoption, language features, and performance characteristics, catering to distinct programming needs and preferences in the software development landscape.

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Advice on TypeScript, Pyright

Peter

May 17, 2019

Reviewon

TypeScript

I use TypeScript because:

incredible developer tooling and community support
actively developed and supported by Microsoft (yes, I like Microsoft) ;)
easier to make sense of a TS codebase because the annotations provide so much more context than plain JS
refactors become easier (VSCode has superb support for TS)

I've switched back and forth between TS and Flow and decided a year ago to abandon Flow completely in favor of TS. I don't want to bash Flow, however, my main grievances are very poor tooling (editor integration leaves much to be desired), a slower release cycle, and subpar docs and community support.

135k views135k

Comments

Jarvis

May 16, 2019

Reviewon

TypeScript

Flow (JS)

I use TypeScript because it isn't just about validating the types I'm expecting to receive though that is a huge part of it too. Flow (JS) seems to be a type system only. TypeScript also allows you to use the latest features of JavaScript while also providing the type checking. To be fair to Flow (JS), I have not used it, but likely wouldn't have due to the additional features I get from TypeScript.

168k views168k

Comments

David

VP Engineering at Trolley

May 16, 2019

Reviewon

JavaScript

Flow (JS)

TypeScript

We originally (in 2017) started rewriting our platform from JavaScript to Flow (JS) but found the library support for Flow was lacking. After switching gears to TypeScript we've never looked back. At this point we're finding that frontend and backend libraries are supporting TypeScript out of the box and where the support is missing that the commuity is typically got a solution in hand.

173k views173k

Comments

Detailed Comparison

TypeScript	Pyright
TypeScript is a language for application-scale JavaScript development. It's a typed superset of JavaScript that compiles to plain JavaScript.	Typically 5x or more faster than mypy and other type checkers that are written in Python. It is meant for large Python source bases. It can run in a “watch” mode and performs fast incremental updates when files are modified.
-	Hover tool tips that display type information; Links to symbol definitions; Smart priority queuing for interactive feedback during editing
Statistics
GitHub Stars 106.6K	GitHub Stars 14.9K
GitHub Forks 13.1K	GitHub Forks 1.7K
Stacks 105.1K	Stacks 36
Followers 74.2K	Followers 31
Votes 503	Votes 0
Pros & Cons
Pros 173 More intuitive and type safe javascript 105 Type safe 80 JavaScript superset 48 The best AltJS ever 27 Best AltJS for BackEnd Cons 5 Code may look heavy and confusing 4 Hype	No community feedback yet
Integrations
No integrations available	Node.js Python Visual Studio Code GNU Bash

What are some alternatives to TypeScript, Pyright?

JavaScript

JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.

Python

Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.

PHP

Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.

Ruby

Ruby is a language of careful balance. Its creator, Yukihiro “Matz” Matsumoto, blended parts of his favorite languages (Perl, Smalltalk, Eiffel, Ada, and Lisp) to form a new language that balanced functional programming with imperative programming.

Java

Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!

Golang

Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.

HTML5

HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. As of October 2014 this is the final and complete fifth revision of the HTML standard of the World Wide Web Consortium (W3C). The previous version, HTML 4, was standardised in 1997.

C#

C# (pronounced "See Sharp") is a simple, modern, object-oriented, and type-safe programming language. C# has its roots in the C family of languages and will be immediately familiar to C, C++, Java, and JavaScript programmers.

Scala

Scala is an acronym for “Scalable Language”. This means that Scala grows with you. You can play with it by typing one-line expressions and observing the results. But you can also rely on it for large mission critical systems, as many companies, including Twitter, LinkedIn, or Intel do. To some, Scala feels like a scripting language. Its syntax is concise and low ceremony; its types get out of the way because the compiler can infer them.

Elixir

Elixir leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.