Features

• Breaking Change: emit in schema only types actually used by provided resolvers classes (#415)
• Breaking Change: update graphql-js peer dependency to ^15.0.0
• Breaking Change: update graphql-query-complexity dependency to ^0.5.0 and drop support for fieldConfigEstimator (use fieldExtensionsEstimator instead)
• Breaking Change: introduce sortedSchema option in PrintSchemaOptions and emit sorted schema file by default
• Breaking Change: make class-validator a peer dependency of version >=0.12.0 that needs to be installed manually (#366)
• Breaking Change: remove CannotDetermineTypeError and make other error messages more detailed and specific
• update TypeResolver interface to match with GraphQLTypeResolver from graphql-js
• add basic support for directives with @Directive() decorator (#369)
• add possibility to tune up the performance and disable auth & middlewares stack for simple field resolvers (#479)
• optimize resolvers execution paths to speed up a lot basic scenarios (#488)
• add @Extensions decorator for putting metadata into GraphQL types config (#521)
• add support for defining arguments and implementing resolvers for interface types fields (#579)
• add { autoRegisterImplementations: false } option to prevent automatic emitting in schema all the object types that implements used interface type (#595)
• allow interfaces to implement other interfaces (#602)

Fixes

• Breaking Change: stop returning null for GraphQLTimestamp and GraphQLISODateTime scalars when returned value is not a Date instance - now it throws explicit error instead
• refactor union types function syntax handling to prevent possible errors with circular refs
• fix transforming and validating nested inputs and arrays (#462)
• remove duplicated entries for resolver classes that use inheritance (#499)
• fix using name option on interface fields (#567)
• fix not calling authChecker during subscribe phase for subscriptions (#578)
• fix using shared union type in multiple schemas
• fix using shared interface type in multiple schemas
• fix calling field resolver without providing resolver class to buildSchema
• fix generated TS union type for union type of object type classes extending themselves (#587)
• fix using shared union and interface types in multiple schemas when resolveType is used

Others

• Breaking Change: change build config to ES2018 - drop support for Node.js < 10.3
• Breaking Change: remove deprecated DepreciationOptions interface
• Breaking Change: remove deprecated direct array syntax for declaring union types