(feat): Support embedding as a library crate inside CLI generator output.
Async command handlers, AppContext::client() returning a
forward-compatible ApiClient trait, and ResolvedClientConfig
for auth credential resolution.
(chore): Bump Node.js base image from 24.15 to 24.16.
(fix): Change RequestExecutor::execute return type from Result<Response, reqwest::Error>
to Result<Response, Box<dyn std::error::Error + Send + Sync>> and add ApiError::Executor
variant. This allows downstream crates (e.g. CLI glue) to inject custom executor errors
without a backwards dependency on reqwest.
(fix): Fix compilation error where structs incorrectly derived Default when
containing fields whose types extend base objects that don’t support
Default (e.g., objects with required enum fields). The
namedTypeSupportsDefault check now also verifies parent types via
extends, not just direct properties.
(feat): Add RequestExecutor trait and HttpClient::with_executor() constructor
to enable CLI execution-sharing. When an external executor is injected,
the SDK delegates HTTP execution entirely — auth, headers, and retries
are handled by the caller’s transport stack.
(internal): Parameterize core module path in model generator to support
standalone types crate usage.
(fix): Fix the root client failing to compile when root-level endpoints return
Server-Sent Event streams, return binary bodies, or use query parameters.
The root client now imports SseStream, ByteStream, and QueryBuilder
when those endpoints are present, matching sub-client behavior.
(feat): Discriminated unions are now forward-compatible. Each generated enum carries
#[non_exhaustive] and a final __Unknown(serde_json::Value) variant marked
#[serde(untagged)]. Unknown discriminant values (e.g. variants introduced
server-side after this SDK was generated) deserialize into __Unknown
instead of erroring, preserving the raw JSON payload for inspection and
round-trip serialization.
Forward-compatible unions can no longer derive Eq/Hash because
serde_json::Value doesn’t implement them. PartialEq is still derived.
(fix): Stop launching WireMock with --global-response-templating in generated
wire-test docker-compose.test.yml. Response examples containing literal
{{...}} are now served verbatim instead of being passed through
WireMock’s Handlebars transformer, which would fail to resolve them as
helpers and return 500.
(fix): Fix generated Rust wire tests for single-URL SDKs and pagination error
tests. The wire test generator no longer emits config.environment = None;
when the SDK was generated against a single base URL (since the
environment field does not exist on ClientConfig in that case).
The synchronous-paginator error-propagation tests now use
ApiError::Configuration instead of the non-existent
ApiError::Serialization variant, so the generated pagination.rs test
module compiles.
(chore): Bump the Rust SDK and Rust model generator containers’ Node base image from
node:22.22-alpine3.23 to node:24.15-alpine3.23. Aligns the generators
with the rest of the Fern generator containers on a single Node major
version (Node 24) and picks up Node 24’s CVE patches. The Rust SDK’s
in-place npm@11.13.0 self-upgrade and the bundled ip-address patch are
retained because the Node 24 npm ship (11.12.1) still vendors
ip-address@10.1.0, which is vulnerable to GHSA-v2v4-37r5-5v8g.
(chore): Bump the rust toolchain stage in the rust-sdk and rust-model generator
containers from rust:1.82-alpine3.20 to rust:1.91-alpine3.23. Alpine
3.20 is EOL and ships outdated openssl/musl/busybox/zlib/curl/git; 1.91
is the lowest rust version Docker Hub publishes for alpine3.23. The
Node runtime stage was already on node:22.22-alpine3.23, so there is
no longer any Alpine 3.20 layer anywhere in these images.
