libraries/JavaScript/Experimental.elm · elk

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elk/libraries/JavaScript/Experimental.elm

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2module JavaScript.Experimental where

4import JavaScript (JSObject)

5import Native.JavaScript as Native

7-- Turn arbitrary JavaScript objects into Elm records.

8-- Arrays are converted into lists, nested objects are allowed.

9-- No `null` values or non-homogeneous arrays.

11-- -- OK objects

12-- { student:"Steve", scores:[83,94,99,72] }

13-- { errorLevel:10, critical:true }

15-- -- BAD objects

16-- { answer:null }

17-- { info:[true,42,'what'] }

18toRecord : JSObject -> a

19toRecord = Native.toRecord

21-- Turn arbitrary Elm records into JavaScript objects.

22-- Lists become arrays, nested records are allowed. No ADTs.

24-- -- OK records

25-- { student="Steve", scores=[83,94,99,72] }

26-- { errorLevel=10, critical=True }

28-- -- BAD records

29-- { answer = Nothing }

30-- { result = Left "An error occurred" }

31fromRecord : a -> JSObject

32fromRecord = Native.fromRecord