btravstack · btravers · Jul 27, 2026 · Jul 27, 2026
diff --git a/.changeset/pre.json b/.changeset/pre.json
@@ -18,6 +18,7 @@
     "exhaustive-error-matcher",
     "fix-async-flatmap-inference",
     "fix-variance-and-frompromise-inference",
+    "getorthrow-never-gate-message",
     "orpc-sync-throw-defect",
     "oxlint-four-rules",
     "prisma-transaction-defect",
@@ -26,6 +27,7 @@
     "runtime-hardening",
     "standard-schema-orphan-adoption",
     "synchronous-qualify-and-taperr",
+    "ts-pattern-peer-dependency",
     "v5-extractor-cleanup",
     "vitest-loud-forgotten-await"
   ]

diff --git a/packages/boxed/CHANGELOG.md b/packages/boxed/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @unthrown/boxed
 
+## 5.0.0-beta.5
+
+### Patch Changes
+
+- Updated dependencies [5364caa]
+- Updated dependencies [5364caa]
+  - unthrown@5.0.0-beta.5
+
 ## 5.0.0-beta.4
 
 ### Patch Changes

diff --git a/packages/boxed/package.json b/packages/boxed/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unthrown/boxed",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "Boxed interop for unthrown",
   "keywords": [
     "boxed",

diff --git a/packages/core/CHANGELOG.md b/packages/core/CHANGELOG.md
@@ -1,5 +1,37 @@
 # unthrown
 
+## 5.0.0-beta.5
+
+### Major Changes
+
+- 5364caa: **`ts-pattern` is now a `peerDependency` (`^5`), not a plain dependency.** Core
+  re-exports `match` / `P` / `tag` and its error matchers speak ts-pattern's
+  builder type. When ts-pattern was a nested, exact-pinned dependency, a consumer
+  who already used ts-pattern at another version ended up with two copies whose
+  declarations don't unify — feeding a `P.union(...)` built by one copy into an
+  unthrown matcher failed five layers deep in a conditional type.
+
+  Declaring it as a peer guarantees a single copy the consumer owns, so
+  `import { P } from "ts-pattern"` composes with unthrown's matchers as expected.
+
+  **Action required:** add `ts-pattern` (`^5`) to your own dependencies if you
+  don't already depend on it. Most package managers surface this as a missing-peer
+  warning on install.
+
+### Patch Changes
+
+- 5364caa: **`getOrThrow()`'s never-channel gate now explains itself.** When the error
+  channel is already empty (`E = never`) `getOrThrow()` is unnecessary — there is
+  nothing to throw, so `get()` is the tool. The gate previously surfaced as an
+  opaque `The 'this' context of type '…' is not assignable to method's 'this' of
+type 'never'`. The `never` receiver now carries a message, so the diagnostic
+  reads:
+
+  > unthrown: getOrThrow is unnecessary here — the Err channel is empty (E =
+  > never), so there is nothing to throw. Use get() instead.
+
+  Behaviour is unchanged; only the compile-time message improves.
+
 ## 5.0.0-beta.4
 
 ### Major Changes

diff --git a/packages/core/package.json b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "unthrown",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "Explicit errors as values, with a separate defect (panic) channel",
   "keywords": [
     "defect",

diff --git a/packages/effect/CHANGELOG.md b/packages/effect/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @unthrown/effect
 
+## 5.0.0-beta.5
+
+### Patch Changes
+
+- Updated dependencies [5364caa]
+- Updated dependencies [5364caa]
+  - unthrown@5.0.0-beta.5
+
 ## 5.0.0-beta.4
 
 ### Patch Changes

diff --git a/packages/effect/package.json b/packages/effect/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unthrown/effect",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "Effect interop for unthrown",
   "keywords": [
     "effect",

diff --git a/packages/neverthrow/CHANGELOG.md b/packages/neverthrow/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @unthrown/neverthrow
 
+## 5.0.0-beta.5
+
+### Patch Changes
+
+- Updated dependencies [5364caa]
+- Updated dependencies [5364caa]
+  - unthrown@5.0.0-beta.5
+
 ## 5.0.0-beta.4
 
 ### Patch Changes

diff --git a/packages/neverthrow/package.json b/packages/neverthrow/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unthrown/neverthrow",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "neverthrow interop for unthrown",
   "keywords": [
     "errors-as-values",

diff --git a/packages/oxlint/CHANGELOG.md b/packages/oxlint/CHANGELOG.md
@@ -1,5 +1,7 @@
 # @unthrown/oxlint
 
+## 5.0.0-beta.5
+
 ## 5.0.0-beta.4
 
 ## 5.0.0-beta.3

diff --git a/packages/oxlint/package.json b/packages/oxlint/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unthrown/oxlint",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "oxlint plugin enforcing unthrown's conventions",
   "keywords": [
     "errors-as-values",

diff --git a/packages/standard-schema/CHANGELOG.md b/packages/standard-schema/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @unthrown/standard-schema
 
+## 5.0.0-beta.5
+
+### Patch Changes
+
+- Updated dependencies [5364caa]
+- Updated dependencies [5364caa]
+  - unthrown@5.0.0-beta.5
+
 ## 5.0.0-beta.4
 
 ### Patch Changes

diff --git a/packages/standard-schema/package.json b/packages/standard-schema/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unthrown/standard-schema",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "Standard Schema (Zod, Valibot, ArkType, …) interop for unthrown",
   "keywords": [
     "arktype",

diff --git a/packages/vitest/CHANGELOG.md b/packages/vitest/CHANGELOG.md
@@ -1,5 +1,7 @@
 # @unthrown/vitest
 
+## 5.0.0-beta.5
+
 ## 5.0.0-beta.4
 
 ## 5.0.0-beta.3

diff --git a/packages/vitest/package.json b/packages/vitest/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unthrown/vitest",
-  "version": "5.0.0-beta.4",
+  "version": "5.0.0-beta.5",
   "description": "Vitest matchers for unthrown",
   "keywords": [
     "errors-as-values",