smithy-lang/smithy 1.66.0

Smithy CLI v1.66.0

on GitHub

1.66.0 (2026-01-13)

Features

• Added protocol test to test xml attribute members that are declared between
  non-attribute members.
  (#2870)
• Improve BDD sifting (2x speed, more reduction)
  (#2890)
• Added the shared file manifest to directed codegen interfaces so that it can
  be easily used by integrations.
  (#2893)
• Add CostOptimization for cost-based BDD sifting
  (#2889)
• Added a SnippetConfig class to codgen-core that allows sharing doc snippets
  that will be consumed by smithy-docgen.
  (#2894)
• Remove [] from toString on some rules engine types
  (#2904)
• Updated smithy-docgen to consume snippet files to generate example sections.
  (#2894)
• Added a generic evaluator/interpreter for JMESPath expressions.
  (#2878)
• Made DefaultBuilderRef public.
  (#2894)
• Implement rules engine ITE fn and S3 tree transform
  (#2903)

Bug Fixes

• Change generated union variant classes to public in trait codegen
  (#2887)
• Fix toBuilder not supplying cloudWatchNamespace in the aws.api#service trait
  (#2895)

Documentation

• Added a section to discuss recommendations for implementing Smithy clients.
  Currently this section only includes information about HTTP interfaces, but it
  will expand over time to cover more topics related to implementing clients.
  (#2868)

Other

• Make husky only work for files under /docs
  (#2916)