Temporal

Breaking Changes

• Major upgrade of protobufjs to v8 and protobufjs-cli to v2.

  Temporal's protobuf messages types generated by protobufjs are exposed as part of our public API surface (mostly through @temporalio/proto and Client's raw gRPC interfaces).…

Highlights

Added

• Added experimental workflow.GetRandomStream for named deterministic pseudorandom values in workflows.
• Added experimental workflow.IsReadOnly to report whether the workflow context is in a read-only path.
• Added client.Options.SdkName…

What's Changed

Added

• Experimental: Added TypeInfo and TransferTypeConverter to @temporalio/common for converting application values to and from serialization-friendly transfer types and supplying converter-specific hints.
• Workers can now configure…

Highlights

• User metadata fields (StaticSummary, StaticDetails, CurrentDetails, Activity Summary, Timer Summary, AwaitOptions) are no longer marked as experimental.
• Workers automatically enroll into poller autoscaling when the namespace advertises the…

What's Changed

• AI-338: drive langsmith workflow tracing from the SDK-provided AsyncLocalStorage by @xumaple in https://github.com/temporalio/sdk-typescript/pull/2217

Fixed

• fix(strands): ignore @aws-sdk/client-s3 in bundler by @brianstrauch in…

What's Changed

Added

• Prerelease, Experimental: You can now configure external storage on your DataConverter via the new externalStorage option to offload large payloads out of Temporal Server. When set, payloads larger than the configured…

What's Changed

Fixed

• Workflow Bundler: further strengthening of the webpack_module_cache replacement logic, addressing regressions introduced by the fix in 1.20.1.
• @temporalio/langsmith: install Workflow-bundle rewrites via compiler.webpack so they work under…

Signal and Signal-with-start calls from Nexus operation handlers now propagate links for mutual UI navigation between caller and callee workflows, and standalone Nexus operation links are supported. Standalone activities now receive tracing spans through the OTel interceptor. Fixed SDK flags being ignored when GetSystemInfo lacks metadata support and RPC retry failures with gzip-unsupported servers.

Node version requirement bumped to 20.3.0, and gRPC gzip compression is now enabled by default (disable via grpcCompression: { codec: none } if using a proxy without gzip support). Nexus operation link propagation now works for signals, making caller and callee mutually navigable in the UI, and WorkflowHandle.runId is now optional to support creating handles using only a workflow ID.

Highlights

Workflow Behavior Fixes Enabled by Default

SDKFlagBlockedSelectorSignalReceive and SDKFlagWorkflowNewChannelLostMessages are now enabled by default for new workflow executions. These flags previously gated fixes for selector/signal receive behavior…