41 lines
No EOL
1.2 KiB
Elm
41 lines
No EOL
1.2 KiB
Elm
module JavaScript.Experimental where
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{-| A pair of very experimental functions for converting between
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Elm records and JavaScript objects. It currently uses a best effort
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conversion that can cause runtime errors. This API should change and
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improve as we find its key failings.
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# Converting between Elm records and JS Objects
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@docs toRecord, fromRecord
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-}
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import JavaScript (JSObject)
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import Native.JavaScript
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{-| Turn arbitrary JavaScript objects into Elm records.
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Arrays are converted into lists, nested objects are allowed.
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No `null` values or non-homogeneous arrays.
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-- OK objects
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{ student:"Steve", scores:[83,94,99,72] }
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{ errorLevel:10, critical:true }
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-- BAD objects
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{ answer:null }
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{ info:[true,42,'what'] }
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-}
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toRecord : JSObject -> a
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toRecord = Native.JavaScript.toRecord
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{-| Turn arbitrary Elm records into JavaScript objects.
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Lists become arrays, nested records are allowed. No ADTs.
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-- OK records
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{ student="Steve", scores=[83,94,99,72] }
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{ errorLevel=10, critical=True }
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-- BAD records
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{ answer = Nothing }
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{ result = Left "An error occurred" }
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-}
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fromRecord : a -> JSObject
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fromRecord = Native.JavaScript.fromRecord |