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@semanticNonNullExperimental

@semanticNonNull allows marking fields that are never null unless there is a matching error in the errors array. This allows some tools to generate those types as non-null and make the client code simpler

More info: https://specs.apollo.dev/nullability/v0.4/#@semanticNonNull

Projects

Project Name Supported Since Note
Apollo Client N/A
Apollo Kotlin 4.0.0

doc
Apollo Router -
Apollo Server ?

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Apollo iOS -
Domain Graph Service (DGS) Framework -

discussion
GraphQL Code Generator 4.6.0

pr, release
GraphQL Java ?

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GraphQL Kotlin ?

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GraphQL Yoga -
GraphQL.js N/A

@semanticNonNull is not a built-in directive and will probably never be. It's only used as a transitional phase while tools migrate to onError: NULL.
GraphiQL ?

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Grats 0.0.12

doc, commit
Hive Gateway -
Hot Chocolate 14.0.0
Relay 18.0.0

doc
Spring for GraphQL ?

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gql.tada -

gql.tada supports its own client-controlled nullability directives (@_required and @_optional) since 1.1.0, but not semantic non-null.
urql N/A

urql does not perform schema-based type generation or nullability analysis.