Function: getFieldDef()

getFieldDef(schema, parentType, fieldNode): Maybe<GraphQLField<unknown, unknown, any>>

Defined in: packages/executor/src/execution/execute.ts:2412 

Internal

This method looks up the field on the given type definition. It has special casing for the three introspection fields, __schema, __type and __typename. __typename is special because it can always be queried as a field, even in situations where no other fields are allowed, like on a Union. __schema and __type could get automatically added to the query type, but that would require mutating type definitions, which would cause issues.

Parameters

schema

GraphQLSchema

parentType

GraphQLObjectType

fieldNode

FieldNode

Returns

Maybe<GraphQLField<unknown, unknown, any>>