smithy-lang/smithy 1.64.0

Smithy CLI v1.64.0

on GitHub

1.64.0 (2025-11-04)

Features

• Updated LoaderShapeMap to use DependencyGraph to sort shapes instead of
  TopologicalShapeSort. This results in some error messages changing:

  • There is no longer a special message for missing transitive mixins.
  • The message for genrically missing mixins is now applied by ApplyMixin,
    which has a slightly different wording and which will trigger for each
    mising mixin.
  • The error message for detected cycles will now include the entire cycle that
    a shape is part of, rather than just the edges that it is directly connected
    to. (#2774)

• Added a space for plugins to write data that is intended to be consumable by
  other plugins. This appears under a directory called shared in the the
  projection's output directory.
  (#2764)

• Expanded title trait to apply to members.
  (#2791)

• Added a generic dependency graph to smithy-utils to be used for sorting
  various dependent objects, such as integrations and plugins.
  (#2774)

• Added support for (de)serializing byte arrays to/from base64-encoded string
  nodes to NodeMapper.
  (#2803)

• Added builder method support for ServiceResolvedConditionKeysTrait.
  (#2779)

• Added support for mapping the title trait in JSON Schema's oneOf enum
  strategy. (#2791)

• Added a new eventStreamProtocolTests trait to enable writing shared test
  suites for event streams just as has been done for standard HTTP protocol
  requests and responses.
  (#2803)

• Deprecated TopologicalShapeSort in favor of DependencyGraph.
  (#2774)

• Added a builder to Differences in smithy-diff that allows constructing an
  instance that only contains a set of hand-curated changes. This enables making
  comparisons that weren't or wouldn't be auto-detected, such as comparing two
  shapes of the same type to see if they are compatible with each other.
  (#2796)

• Updated TopDownIndex to return results in modeled order.
  (#2746)

• Updated ReplaceShapes to use DependencyGraph to sort shapes.
  (#2774)

• Updated Walker to walk relationships in their defined order, rather than the
  reverse of their defined order.
  (#2746)

• Loosened the ChangedMemberTarget diff evaluator to not report ERROR level
  events so often. Now it will always report an ERROR if the change is
  expected to result in codegen type errors, but otherwise it will default to
  WARNING unless differing traits between the targets would result in a higher
  severity event had those trait changes been applied to the original target.
  (#2796)

• Updated DiffEvaluator interface to include an optional method that
  additionally accepts a ClassLoader. This ensures that the loader the
  evaluation is configured with can be used in any evaluators that may need it.
  (#2796)

• Added protocol tests for event streaming in restJson1.
  (#2803)

• Added missing suffixes to allow identification of all cases for when the
  nullability of a member changed

  • RemovedClientOptionalTrait for when the @clientOptional trait is
    removed.
  • RemovedNullDefault for when a @default(null) is changed to a default
    with non-null value.
  • AddedNullDefault for when a @default(<non-null-value>) is changed to a
    default with null value.
    (#2805)

• Added the ability for smithy build plugins to declare that they must be run
  before or after other plugins. These dependencies are soft, so missing
  dependencies will be logged and ignored.
  (#2774)

Bug Fixes

• Fix message in RemovedServiceError diff event
  (#2823)

Other

• Added restJson1 protocol tests for httpQueryParams when no params exist.
  (#2792)