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A library taking advantage of purescript-aff to enable pain-free asynchronous AJAX requests and response handling.


bower install purescript-affjax

If you are intending to use the library in a Node.js setting rather than the browser, you will need an additional dependency from npm:

npm install xhr2


You can construct requests with the affjax function:

module Main where

import Prelude
import Control.Monad.Eff.Console (log)
import Control.Monad.Eff.Class (liftEff)
import Control.Monad.Aff (launchAff)
import Data.Either (Either(..))
import Data.HTTP.Method (Method(..))
import Network.HTTP.Affjax (affjax, defaultRequest)

main = launchAff $ do
  res <- affjax $ defaultRequest { url = "/api", method = Left GET }
  liftEff $ log $ "GET /api response: " <> res.response

(defaultRequest is a record value that has all the required fields pre-set for convenient overriding when making a request.)

Or use of a number of helpers for common cases:

import Network.HTTP.Affjax (get, post)

main = launchAff $ do
  res1 <- get "/api"
  liftEff $ log $ "GET /api response: " <> res1.response

  res2 <- post "/api" someData
  liftEff $ log $ "POST /api response: " <> res2.response

See the module documentation for a full list of these helpers.

When sending data in a request the Requestable class enables automatic conversion into a format that is acceptable for an XHR request. Correspondingly there is a Respondable class for reading data that comes back from the server.

Module documentation

Module documentation is published on Pursuit.