servant VS coffeescript

Compare servant vs coffeescript and see what are their differences.


Main repository for the servant libraries — DSL for describing, serving, querying, mocking, documenting web applications and more! (by haskell-servant)


Unfancy JavaScript (by jashkenas)
Our great sponsors
  • Onboard AI - Learn any GitHub repo in 59 seconds
  • InfluxDB - Collect and Analyze Billions of Data Points in Real Time
  • SaaSHub - Software Alternatives and Reviews
servant coffeescript
16 52
1,748 16,400
0.3% -
6.4 4.1
12 days ago 2 months ago
Haskell CoffeeScript
BSD 3-clause "New" or "Revised" License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of servant. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-10-07.
  • An alternative front end for Haskell?
    3 projects | | 7 Oct 2023
    > do you really have to understand language extensions?

    You do when your code doesn't compile and you're trying to figure out what the error message means, or when the library you want to use makes heavy use of it for even basic functionality.

    > These days one just enables GHC2021

    My experience was pre-GHC2021. I basically had to enable at a minimum 5-6 language extensions in every single file.

    > Mostly they're just about removing unnecessary restrictions from the older standard.

    Yeah, those ones are usually fine. I have zero objection to things like FlexibleInstances or DeriveFoldable.

    > Could you give an example?

    I believe I was trying to implement Central Authentication Service using Servant. However, that required returning a custom HTTP status code. There has been an open Github issue for this since 2017, but it seems to require basically rewriting the entire framework:

    Looking back at it now Servant does have "ServerError", but that basically requires giving up all the advantages Servant claims to have and I believe it was not a viable option at the time. Looking at the timeline I was probably also on Servant 0.15, and there seems to have been a rewrite since then.

    I vaguely recall running into a similar issue trying to interact with a database, but I can't remember the details of that.

  • Monthly Hask Anything (November 2022)
    3 projects | /r/haskell | 1 Nov 2022
    If you don't like this style, the usual alternative is to change mkDualAuthHandler to take two additional arguments, Proxy tag0 and Proxy tag1 (as e.g. lots of Servant functions do, for historical reasons).
  • How introduce `ResourceT` into my stack
    3 projects | /r/haskell | 14 Oct 2022
    Dunno if this is helpful, but I found this github issue about ResourceT and servant
  • Introduction to Doctests in Haskell
    6 projects | /r/haskell | 19 Apr 2022
    And what about the cabal repl --with-compiler=doctest, which was added recently, in doctest v0.20? I recently submitted a PR for Servant to use this in place of GHC environment files, because it seems less finicky to me. Was this a bad idea?
  • Generate Typescript from Servant API
    5 projects | /r/haskell | 15 Mar 2022
    I asked a somewhat relevant question recently. Maybe you'll find this discussion somewhat helpful:; two packages were talked about. One of the folks from Well Typed replied, and said they tried it recently (and worked fine).
  • Named Routes in Servant
    3 projects | /r/haskell | 9 Mar 2022
    Hey, is it possible this could solve the quadratic compile times issue for Servant routes? I was under the impression the slowdown was related to GHC being slow processing giant types, so maybe breaking the API down into records is just the thing...
    3 projects | /r/haskell | 9 Mar 2022
    You'll actually have to use the unreleased servant-auth-server from master (see here for details). I need to push a release :-)
    3 projects | /r/haskell | 9 Mar 2022
  • Why Do We Need Transpilation into JavaScript?
    6 projects | | 5 Apr 2021
    We use servant library that allows us to describe API at the type level and check during the compilation whether both the server handlers and the client functions use correct parameters of the required types and correspond to the current API version (if you forgot to change the client function at the frontend, it just won’t be built).
  • Saw a Tweet about Haskell+Servant being replaced with NodeJS in a project due to compile times - will compile times ever get better?
    2 projects | /r/haskell | 23 Feb 2021
    Since nobody has mentioned it yet, there is an outstanding issue about quadratic compile times in Servant.


Posts with mentions or reviews of coffeescript. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-09.
  • alternatives to the javascript ecosystem
    2 projects | /r/webdev | 9 Jul 2023
    That said, there are ways to embrace the JS ecosystem without actually using JavaScript. Many popular languages have transpilers that will convert code written in that particular language into something that will run natively in a web browser (in other words, JavaScript). Even TypeScript is a language that gets transpiled into JavaScript, so it's not that outrageous of a concept, it just gets more difficult to do the further you get away from languages that don't already look like JavaScript.
  • Vanilla+PostCSS as an Alternative to SCSS
    15 projects | | 30 Mar 2023
    As a front-end web developer, do you still use CoffeeScript or jQuery? Unlikely, as TypeScript, ES/TC39 and Babel (and the retirement of Internet Explorer thanks to @codepo8 and his EDGE team) have helped to transform JavaScript into some kind of a modern programming language.
  • Por que Elm é uma linguagem tão deliciosa?
    11 projects | | 28 Feb 2023
  • An Introduction for TypeScript
    6 projects | | 31 Jan 2023
  • Why React isn't dying
    2 projects | | 31 Jan 2023
    On the other hand, companies choose React because that's where all the developers are. If you want to build something that can be maintained years from now, you better not choose the next hype train that goes straight to nowhere (remember CoffeeScript ?). You want something battle tested that has stood the test of time, where you won't have trouble finding developers to scale once you need to. And nobody ever got fired for choosing React.
  • We're breaking up with JavaScript front ends
    18 projects | | 10 Dec 2022
  • História sobre usar o JavaScript para programar JavaScript
    4 projects | | 31 Oct 2022
  • Civet: The CoffeeScript of TypeScript
    3 projects | | 24 Oct 2022

    this comes from Lisp and makes a lot of things easier. Obviously this was not implemented in ES6 because it would break compatibility and there is also some problems with implicit returns that made the feature a bit weird

    I wonder if a syntax like this for JS would work:

    const eldest = if (24>41) { escape "Liz" } else { escape "Ike" }

    with "escape" working like a mix of "break" and "return". But even then this is likely to cause incompatibilities

    3 projects | | 24 Oct 2022
    Coffeescript[1] was a flavour of JS syntax meant to look similar to Ruby syntax. You just compiled it back to JS. It was nice for working on Rails projects since it made everything feel more “cohesive”.

    I assume this project is here for older Coffeescript[1] projects who want to start using typescript, and need access to interfaces/types that were present in old CS files.


  • Im listening...
    5 projects | /r/ProgrammerHumor | 16 Aug 2022
    Silly me forgot about CoffeeScript

What are some alternatives?

When comparing servant and coffeescript you can also consider the following projects:

servant-ts - See the docs and live playground here

graphql - Haskell GraphQL implementation


swagger-petstore - swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.

Elm - Compiler for Elm, a functional language for reliable webapps.

emacs-ng - A new approach to Emacs - Including TypeScript, Threading, Async I/O, and WebRender.


gc-monitoring-wai - a wai application to show `GHC.Stats.GCStats`


purescript - A strongly-typed language that compiles to JavaScript

open-browser - Haskell library for opening the web browser.

servant-github - servant types to access the GitHub API v3