Sandbox::https://github.com/purescript/purescript-foreign/blob/master/examples/src/SimpleTypes.purs

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module Example.SimpleTypes where

import Prelude

import Control.Monad.Except (runExcept)

import Effect (Effect)

import Effect.Console (logShow)

import Example.Util.Value (foreignValue)

import Foreign (readBoolean, readNumber, readString)

-- Parsing of the simple JSON String, Number and Boolean types is provided

-- out of the box.

main :: Effect Unit

main = do

logShow $ runExcept $

readString =<< foreignValue "\"a JSON string\""

logShow $ runExcept $

readNumber =<< foreignValue "42"

logShow $ runExcept $

readBoolean =<< foreignValue "true"