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Pug vs TypeScript: What are the differences?

What is Pug? Robust, elegant, feature rich template engine for nodejs. This project was formerly known as "Jade." Pug is a high performance template engine heavily influenced by Haml and implemented with JavaScript for Node.js and browsers.

What is TypeScript? A superset of JavaScript that compiles to clean JavaScript output. TypeScript is a language for application-scale JavaScript development. It's a typed superset of JavaScript that compiles to plain JavaScript.

Pug and TypeScript can be categorized as "Templating Languages & Extensions" tools.

"Elegant html", "Great with nodejs" and "Open source" are the key factors why developers consider Pug; whereas "More intuitive and type safe javascript", "Type safe" and "JavaScript superset" are the primary reasons why TypeScript is favored.

Pug and TypeScript are both open source tools. TypeScript with 51.1K GitHub stars and 7.06K forks on GitHub appears to be more popular than Pug with 18.4K GitHub stars and 1.9K GitHub forks.

Slack, Asana, and Rainist are some of the popular companies that use TypeScript, whereas Pug is used by Coursera, Sellsuki, and triGo GmbH. TypeScript has a broader approval, being mentioned in 982 company stacks & 1447 developers stacks; compared to Pug, which is listed in 174 company stacks and 119 developer stacks.

Advice on Pug and TypeScript
Needs advice
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TypeScriptTypeScript
and
Flow (JS)Flow (JS)

From a StackShare community member: "We are looking to rewrite our outdated front-end with TypeScript. Right now we have a mix of CoffeeScript and vanilla JavaScript. I have read that adopting TypeScript can help enforce better code quality, and best practices. I also heard good things about Flow (JS). Which one would you recommend and why?"

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Replies (14)
Recommends
TypeScriptTypeScript

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.

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Recommends
TypeScriptTypeScript

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.

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David Koblas
VP Engineering at Payment Rails · | 9 upvotes · 75.8K views

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.

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Forrest Norvell
engineering manager at self-employed · | 6 upvotes · 175.3K views
Recommends
TypeScriptTypeScript

I use TypeScript because the tooling is more mature (the decision to discontinue TSLint in favor of moving all its checks to ESLint is a thoughtful and mature decision), there's a ton of examples and tutorials for it, and it just generally seems to be where the industry is headed. Flow (JS) is a fine tool, but it just hasn't seen the uptake that TS has, and as a result is lacking a lot of the nicer small things, like thorough Visual Studio Code integration, offered by TS.

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Tim Abbott
Recommends
UnderscoreUnderscore
at

We use Underscore because it's a reasonable library for providing all the reasonable helper functions missing from JavaScript ES5 (or that perform poorly if you use the default ES5 version).

Since we're migrating the codebase to TypeScript , we'll likely end up removing most usage of it and ultimately no longer needing it, but we've been very happy with the library.

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Recommends
TypeScriptTypeScript

We currently use TypeScript at work. Previously we used Flow (JS) but it was sometimes really difficult to make the types work the way you want. Especially non-trivial types were problematic. And the IDE support wasn't good, Flow took too much resources and sometimes remain stuck and do not show errors (I use Visual Studio Code). With TypeScript we almost do not have these problems. IDE support is superb, working with types is much easier and typing system seems more mature and powerful. There are some downsides (like partion inheritance etc.), but TS team is still pushing it forward. So for me TypeScript is clear winner.

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Recommends
TypeScriptTypeScript

I use TypeScript for Web Applications and for both frontend and backend because it has a lot of tooling around it and they really got the types and type safety right. Flow (JS) on the other hand lacks tooling and most of the times I scramble to find the right way of building my contracts in which TypeScript is very intuitive and natural. Additionally TypeScript is very similar to Java so your backend engineers and full stack engineers can work with it without much of context switch.

The only time I think Flow shines is (based on probably my outdated knowledge) Flow is/was the only option if you want/wanted to build a React Native application mainly because React Native transpiler at the time I was working with it would only work with flow.

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Recommends
TypeScriptTypeScript

I use TypeScript because it's adoption by many developers, it's supported by many companies, and it's growth. AngularJS, React, @ASP.NET Core. I started using it in .NET Core, then for a job. Later I added more Angular experience and wrote more React software. It makes your code easier to understand and read... which means it makes other people's code easier to understand and read.

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Recommends
TypeScriptTypeScript

If you will start a project from scratch I recommend to use TypeScript. But, If you work with legacy projects written in JavaScript I recommend Flow (JS). Both tools have the same objective: reduce the bad code (which create illegible code, generate bugs e problems to maintenance). Flex helps you to avoid fall in bad codes, but TypeScript prevent you to c you to create bad codes. I believe cause this some JavaScript fans don't like TS, because TS block you to write some types o code. This is the fundamental difference between TS and Flow: Flow avoid problems, but no force. TS force you to prevent problems.

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Frédéric MARAND
Core Developer at OSInet · | 2 upvotes · 57.5K views
Recommends
TypeScriptTypeScript

I use TypeScript because I tried both on a Meteor project, and found the quantity of errors it enabled us to catch and the simplification of code it allowed was higher than Flow (JS).

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Recommends
TypeScriptTypeScript

I use TypeScript because of broad support, on tools, repos, community ... the only reason to consider flow is if you're a facebook employee

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Recommends
TypeScriptTypeScript

I use TypeScript because it's the most mature/issue-free Javascript type-checker available, as far as I've seen.

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Damian Esteban
CTO @ betterPT at BetterPT · | 1 upvotes · 45.1K views
Recommends
TypeScriptTypeScript
at

I recommend TypeScript. When used correctly, TypeScript can enable your application to be scalable, easy to refactor, safe, and stable. One of the biggest draws of working with any typed language is that it forces you to think about your functions' inputs and outputs. This is invaluable as it can lead to more declarative, functional style code that ultimately can be easier to reason about.

TypeScript is however not a silver bullet. Just like anything new it takes time to fully understand the concepts of types, interfaces, abstract classes, and enums. In my experience engineers who excel when using TypeScript are those who have experience working with a statically typed language.

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Rafael Avaria
Ingeniero civil en electrónica · | 1 upvotes · 44.2K views
Recommends
TypeScriptTypeScript

I use TypeScript because i love to program in Angular and used in node as well

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Decisions about Pug and TypeScript
Vladyslav Holubiev
Software Enginieer at Shelf · | 3 upvotes · 54.4K views

As our codebase grew in size, we were looking for ways to improve code quality. We chose TypeScript over Flow due to its rapid industry adoption and overall tools support.

We noticed how different open-source projects were migrating from Flow to TypeScript. Most notably, it was Jest, even though Jest and Flow were both developed by Facebook. See this HN thread if you want to dive into an interesting discussion around this move.

Additionally, at the beginning of 2019, both Babel and ESLint enabled seamless TypeScript support, which allowed easy migration path in a backward-compatible way.

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Oleksandr Fedotov
Senior Software Engineer at joyn · | 4 upvotes · 47.6K views

Initially making a decision to use Flow vs Typescript we decided to go with flow as we wanted our code to run in a way we wrote it, because when using Flow types are simply removed from the code without modifying the code itself. Sadly, the type system of Flow was in some cases very hard to understand and declare the types correctly, especially in cases when the structure is very dynamic (e.g. object keys and values are created dynamically). Another reason was bad integration with IDE and frequent crashes which made DX very poor. Therefore, we made another evaluation of Typescript and decided to move towards it. As our code base was pretty big when we decided to migrate to TS we couldn't just stop and re-write everything, that's why we started writing new modules in Typescript as well as transforming old components. To make that possible we had to configure Webpack loader to support simultaneous bundling of Flow&JS and Typescript. After around 2 months of the transformation we have around 40% of code being written in Typescript and we are more than happy with integration TS has with IDE, as well as ease of declaring types for dynamic modules and functions.

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Pros of Pug
Pros of TypeScript
  • 133
    Elegant html
  • 88
    Great with nodejs
  • 56
    Very short syntax
  • 55
    Open source
  • 52
    Structured with indentation
  • 22
    Free
  • 4
    Clean syntax
  • 4
    Gulp
  • 4
    It's not HAML
  • 3
    Really similar to Slim (from Ruby fame)
  • 3
    Easy setup
  • 3
    Readable code
  • 3
    Difficult For Front End Developers,learn backend
  • 1
    Disdain for angled brackets
  • 163
    More intuitive and type safe javascript
  • 97
    Type safe
  • 73
    JavaScript superset
  • 46
    The best AltJS ever
  • 27
    Best AltJS for BackEnd
  • 14
    Powerful type system, including generics & JS features
  • 10
    Nice and seamless hybrid of static and dynamic typing
  • 9
    Aligned with ES development for compatibility
  • 9
    Compile time errors
  • 6
    Structural, rather than nominal, subtyping
  • 5
    Angular
  • 3
    Starts and ends with JavaScript

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Cons of Pug
Cons of TypeScript
    Be the first to leave a con
    • 4
      Code may look heavy and confusing
    • 2
      Hype

    Sign up to add or upvote consMake informed product decisions

    What is Pug?

    This project was formerly known as "Jade." Pug is a high performance template engine heavily influenced by Haml and implemented with JavaScript for Node.js and browsers.

    What is TypeScript?

    TypeScript is a language for application-scale JavaScript development. It's a typed superset of JavaScript that compiles to plain JavaScript.

    Need advice about which tool to choose?Ask the StackShare community!

    What companies use Pug?
    What companies use TypeScript?
    See which teams inside your own company are using Pug or TypeScript.
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    What tools integrate with Pug?
    What tools integrate with TypeScript?

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    What are some alternatives to Pug and TypeScript?
    EJS
    It is a simple templating language that lets you generate HTML markup with plain JavaScript. No religiousness about how to organize things. No reinvention of iteration and control-flow. It's just plain JavaScript.
    Handlebars.js
    Handlebars.js is an extension to the Mustache templating language created by Chris Wanstrath. Handlebars.js and Mustache are both logicless templating languages that keep the view and the code separated like we all know they should be.
    React
    Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
    Mustache
    Mustache is a logic-less template syntax. It can be used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a hash or object. We call it "logic-less" because there are no if statements, else clauses, or for loops. Instead there are only tags. Some tags are replaced with a value, some nothing, and others a series of values.
    Smarty
    Facilitating the separation of presentation (HTML/CSS) from application logic. This implies that PHP code is application logic, and is separated from the presentation
    See all alternatives