quickjs-hs: Wrapper for the QuickJS Javascript Engine

[ javascript, library, mit ] [ Propose Tags ]

This library is a wrapper for the QuickJS Javascript Engine.

To get started, see the ReadMe below.


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Versions [faq] 0.1, 0.1.1, 0.1.2, 0.1.2.1, 0.1.2.2, 0.1.2.3 (info)
Change log ChangeLog.md
Dependencies aeson (>=1.1 && <1.6), base (>=4.11 && <5), bytestring (==0.10.*), containers (>=0.5 && <0.7), exceptions (>=0.8 && <0.11), inline-c (>=0.5 && <0.10), mtl (>=2.2.2 && <2.3), scientific (>=0.3.5 && <0.4), string-conv (>=0.1.2 && <0.2), text (>=1.2.0 && <1.3), time (>=1.8 && <1.10), transformers (==0.5.*), unliftio-core (>=0.1 && <0.2.1), unordered-containers (>=0.2.8 && <0.3), vector (==0.12.*) [details]
License MIT
Copyright 2020 Sam Balco
Author Sam Balco
Maintainer goodlyrottenapple@gmail.com
Category Javascript
Home page https://github.com/goodlyrottenapple/quickjs-hs#readme
Bug tracker https://github.com/goodlyrottenapple/quickjs-hs/issues
Source repo head: git clone https://github.com/goodlyrottenapple/quickjs-hs
Uploaded by goodlyrottenapple at 2020-10-19T15:19:43Z
Distributions NixOS:0.1.2.2
Downloads 290 total (161 in the last 30 days)
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Status Hackage Matrix CI
Docs available [build log]
Last success reported on 2020-10-19 [all 1 reports]

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Readme for quickjs-hs-0.1.2.3

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quickjs-hs

Tests Cabal

This package provides a Haskell wrapper for the QuickJS Javascript Engine. It has been inspired by the quickjs-rs and ocaml-quickjs libraries.

Features

The functionality is quite basic and is currently limited to:

  • evaluating JS code
  • calling a JS function in the global scope
  • marshalling Aeson Values to and from JSValues.

Examples

Evaluate an expression:

import Quickjs

one_plus_two = quickjs $ do
  res <- eval "1+2"
  liftIO $ print res

Declare a function and call it on an argument:

call_f = quickjs $ do
  _ <- eval_ "f = (x) => x+1"
  res <- eval "f(2)"
  liftIO $ print res

Pass a Haskell value (which has a ToJSON instance) to the JS runtime:

aeson_marshall = quickjs $ do
  _ <- eval_ "f = (x) => x+1"
  res <- withJSValue (3::Int) $ \x -> call "f" [x]
  liftIO $ print res

Contributing

Please feel free to report bugs/submit feature requests via the github issue tracker and submit any pull requests to the git repository