Add MarshalJSON for sdk.Null, ensuring conversion the same as Go nil

hashicorp / sentinel-sdk

This SDK allows developers to extend Sentinel to source external information for use in their policies.

Mozilla Public License 2.0

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Add MarshalJSON for sdk.Null, ensuring conversion the same as Go nil #86

Closed cam-stitt closed 2 weeks ago

cam-stitt commented 2 weeks ago

Currently the sdk.Null type marshals as {} when using the encoding/json package. This PR will fix that so that it marshals to null as expected.