AppSync GraphQL Versioned Transformer

A GraphQL transform directive (@versioned) for AWS AppSync that adds object versioning and conflict resolution to @model types. Part of the Amplify GraphQL Transformer ecosystem, this package enables optimistic locking and conflict detection for GraphQL mutations. Version 5.2.80 targets the Amplify Gen 1 GraphQL Transformer v2, compatible with @aws-amplify/graphql-transformer-core. It is deprecated in favor of Amplify GraphQL Transformer v3+ built-in conflict resolution. Key differentiators: integrates directly with AppSync resolvers for DynamoDB, automatic version increment on updates, conditional writes for safe concurrent edits. Release cadence is tied to Amplify CLI releases, typically bi-weekly. Not intended for standalone use outside Amplify.