morpheus-graphql-0.18.0

new Features

server

• NamedResoplvers (experimental featuure): typed Haskell approach of providing appollo
  like named resolvers, apps with NamedResolvers theoretically can be safelly merged.

• TypeGuards: as an alternative for interfaces

• TaggedArguments: support of type level tagged argument definition. for example:

  Haskell field definition

  myField :: Arg "a" Int -> Arg "b" (Maybe Text) -> m Text

  will generate GraphQL field

  myField(a:Int!, b:String): String!

• deriving will merge function arguments. for example:

  for following data type definitions:

  data A = A { a1 :: Text, a2 :: Int} deriving (Show, Generic, GQLType)
  data B = B {b :: Text} deriving (Show, Generic, GQLType)

  Haskell field definition

  myField :: A -> B -> m Text

  will generate GraphQL field

  myField(a1:String!, a2:Int!, b:String!): String!

Breaking Changes

server

• non object variants constructors will be also unpacked
• removed implementsfield from GQLType
• removed interface from Morpheus.Types
• deprecated kind INTERFACE

Minor Changes

core

• GraphQL errors support additional field extensions :: Maybe Value
• the parser reports invalid empty selection sets
• The parser is compliant with the GQL specification and supports all valid characters #581
• The parser performance improvement: on average 3-4 times faster, in some cases more than 100 times faster.

client

• Add defineBy*File' variants that take a Q FilePath #584

• fixed: Generation of data constructors for non-capitalized enums

• fixed invalid scalar type generation and added tests to ensure their validity for each upcoming version #583

• return all response errors gracefully as a Left when fetching #577 - Thanks @AlistairB