vercel · pranaygp · Nov 20, 2025 · Nov 20, 2025
diff --git a/.changeset/pre.json b/.changeset/pre.json
@@ -57,6 +57,7 @@
     "crazy-waves-leave",
     "create-builders-package",
     "cruel-houses-sneeze",
+    "cuddly-lobsters-build",
     "cuddly-otters-sin",
     "curvy-ravens-clean",
     "cute-drinks-swim",
@@ -78,6 +79,7 @@
     "fine-ideas-beam",
     "five-planets-push",
     "fix-cli-flag-docs-typo",
+    "fix-default-export-workflow",
     "fix-error-stack-rendering",
     "floppy-dancers-lose",
     "floppy-symbols-check",
@@ -88,13 +90,15 @@
     "funny-chicken-burn",
     "good-icons-love",
     "green-ducks-wave",
+    "handle-tool-errors",
     "happy-bees-greet",
     "heavy-baboons-relax",
     "heavy-terms-share",
     "hungry-cats-rush",
     "hungry-friends-start",
     "hungry-suits-brake",
     "improve-error-handling",
+    "itchy-memes-attend",
     "khaki-turtles-build",
     "kind-vans-shout",
     "large-crabs-juggle",

diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
@@ -1,5 +1,14 @@
 # @workflow/ai
 
+## 4.0.1-beta.18
+
+### Patch Changes
+
+- 43a3f79: DurableAgent#stream now sends `start` and `finish` chunks properly at the start and end
+- 154670a: Fix `DurableAgent` to propagate `FatalError` in tool calls
+- 1e636e1: Make `writable` property be required in `DurableAgent#stream()`
+  - workflow@4.0.1-beta.18
+
 ## 4.0.1-beta.17
 
 ### Patch Changes

diff --git a/packages/ai/package.json b/packages/ai/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/ai",
-  "version": "4.0.1-beta.17",
+  "version": "4.0.1-beta.18",
   "description": "Workflow DevKit compatible helper library for the AI SDK",
   "type": "module",
   "main": "dist/index.js",
@@ -42,7 +42,7 @@
     "ai": "catalog:"
   },
   "peerDependencies": {
-    "workflow": "4.0.1-beta.17",
+    "workflow": "4.0.1-beta.18",
     "ai": "^5"
   },
   "dependencies": {

diff --git a/packages/builders/CHANGELOG.md b/packages/builders/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @workflow/builders
 
+## 4.0.1-beta.14
+
+### Patch Changes
+
+- Updated dependencies [e5c5236]
+  - @workflow/swc-plugin@4.0.1-beta.7
+
 ## 4.0.1-beta.13
 
 ### Patch Changes

diff --git a/packages/builders/package.json b/packages/builders/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/builders",
-  "version": "4.0.1-beta.13",
+  "version": "4.0.1-beta.14",
   "description": "Shared builder infrastructure for Workflow DevKit",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/cli/CHANGELOG.md b/packages/cli/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @workflow/cli
 
+## 4.0.1-beta.18
+
+### Patch Changes
+
+- Updated dependencies [e5c5236]
+  - @workflow/swc-plugin@4.0.1-beta.7
+  - @workflow/builders@4.0.1-beta.14
+
 ## 4.0.1-beta.17
 
 ### Patch Changes

diff --git a/packages/cli/package.json b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/cli",
-  "version": "4.0.1-beta.17",
+  "version": "4.0.1-beta.18",
   "description": "Command-line interface for Workflow DevKit",
   "type": "module",
   "bin": {

diff --git a/packages/next/CHANGELOG.md b/packages/next/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @workflow/next
 
+## 4.0.1-beta.18
+
+### Patch Changes
+
+- Updated dependencies [e5c5236]
+  - @workflow/swc-plugin@4.0.1-beta.7
+  - @workflow/builders@4.0.1-beta.14
+
 ## 4.0.1-beta.17
 
 ### Patch Changes

diff --git a/packages/next/package.json b/packages/next/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/next",
-  "version": "4.0.1-beta.17",
+  "version": "4.0.1-beta.18",
   "description": "Next.js integration for Workflow DevKit",
   "type": "commonjs",
   "main": "dist/index.js",

diff --git a/packages/nitro/CHANGELOG.md b/packages/nitro/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @vercel/workflow-nitro
 
+## 4.0.1-beta.18
+
+### Patch Changes
+
+- Updated dependencies [e5c5236]
+  - @workflow/swc-plugin@4.0.1-beta.7
+  - @workflow/builders@4.0.1-beta.14
+
 ## 4.0.1-beta.17
 
 ### Patch Changes

diff --git a/packages/nitro/package.json b/packages/nitro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/nitro",
-  "version": "4.0.1-beta.17",
+  "version": "4.0.1-beta.18",
   "description": "Nitro integration for Workflow DevKit",
   "type": "module",
   "main": "dist/index.js",

diff --git a/packages/nuxt/CHANGELOG.md b/packages/nuxt/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @workflow/nuxt
 
+## 4.0.1-beta.7
+
+### Patch Changes
+
+- @workflow/nitro@4.0.1-beta.18
+
 ## 4.0.1-beta.6
 
 ### Patch Changes

diff --git a/packages/nuxt/package.json b/packages/nuxt/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/nuxt",
-  "version": "4.0.1-beta.6",
+  "version": "4.0.1-beta.7",
   "description": "Nuxt integration for Workflow DevKit",
   "license": "Apache-2.0",
   "type": "module",

diff --git a/packages/sveltekit/CHANGELOG.md b/packages/sveltekit/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @workflow/sveltekit
 
+## 4.0.0-beta.12
+
+### Patch Changes
+
+- Updated dependencies [e5c5236]
+  - @workflow/swc-plugin@4.0.1-beta.7
+  - @workflow/builders@4.0.1-beta.14
+
 ## 4.0.0-beta.11
 
 ### Patch Changes

diff --git a/packages/sveltekit/package.json b/packages/sveltekit/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/sveltekit",
-  "version": "4.0.0-beta.11",
+  "version": "4.0.0-beta.12",
   "description": "SvelteKit integration for Workflow DevKit",
   "type": "module",
   "main": "dist/index.js",

diff --git a/packages/swc-plugin-workflow/CHANGELOG.md b/packages/swc-plugin-workflow/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @workflow/swc-plugin
 
+## 4.0.1-beta.7
+
+### Patch Changes
+
+- e5c5236: Fix default export workflow function transformation in workflow mode
+
 ## 4.0.1-beta.6
 
 ### Patch Changes

diff --git a/packages/swc-plugin-workflow/package.json b/packages/swc-plugin-workflow/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/swc-plugin",
-  "version": "4.0.1-beta.6",
+  "version": "4.0.1-beta.7",
   "description": "SWC plugin for transforming Workflow DevKit code",
   "license": "Apache-2.0",
   "type": "module",

diff --git a/packages/workflow/CHANGELOG.md b/packages/workflow/CHANGELOG.md
@@ -1,5 +1,15 @@
 # workflow
 
+## 4.0.1-beta.18
+
+### Patch Changes
+
+- @workflow/cli@4.0.1-beta.18
+- @workflow/next@4.0.1-beta.18
+- @workflow/nitro@4.0.1-beta.18
+- @workflow/sveltekit@4.0.0-beta.12
+- @workflow/nuxt@4.0.1-beta.7
+
 ## 4.0.1-beta.17
 
 ### Patch Changes

diff --git a/packages/workflow/package.json b/packages/workflow/package.json
@@ -1,6 +1,6 @@
 {
   "name": "workflow",
-  "version": "4.0.1-beta.17",
+  "version": "4.0.1-beta.18",
   "description": "Workflow DevKit - Build durable, resilient, and observable workflows",
   "main": "dist/typescript-plugin.cjs",
   "type": "module",

diff --git a/packages/world-testing/CHANGELOG.md b/packages/world-testing/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @workflow/world-testing
 
+## 4.0.1-beta.19
+
+### Patch Changes
+
+- @workflow/cli@4.0.1-beta.18
+- workflow@4.0.1-beta.18
+
 ## 4.0.1-beta.18
 
 ### Patch Changes

diff --git a/packages/world-testing/package.json b/packages/world-testing/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workflow/world-testing",
-  "version": "4.0.1-beta.18",
+  "version": "4.0.1-beta.19",
   "description": "Testing utilities and World implementation for Workflow DevKit",
   "main": "dist/src/index.mjs",
   "files": [