Accept Effect ^4.0.0 again

.changeset/restore-effect-4-0-0.md

@@ -0,0 +1,7 @@
+---
+"@typeonce/effect-machine": patch
+"@typeonce/effect-machine-react": patch
+"@typeonce/effect-machine-devtools": patch
+---
+
+Accept Effect `^4.0.0` again. Effect 4.0.5 is not required: the `effect`, `@effect/atom-react`, and `@effect/platform-*` requirements return to `^4.0.0`, so projects on any stable Effect 4 release can install this version without upgrading Effect.

package.json

@@ -35,10 +35,10 @@
   },
   "devDependencies": {
     "@changesets/cli": "2.31.0",
-    "@effect/vitest": "4.0.5",
+    "@effect/vitest": "4.0.0",
     "@types/node": "25.7.0",
     "dprint": "0.55.2",
-    "effect": "4.0.5",
+    "effect": "4.0.0",
     "pagefind": "1.5.2",
     "tinybench": "2.9.0",
     "tstyche": "7.2.1",

packages/devtools/README.md

@@ -9,13 +9,13 @@ The package is experimental and pre-1.0. Minor releases may change its command o
 Core and devtools always release at the same version. Install matching versions:
 
 ```sh
-pnpm add @typeonce/effect-machine@latest effect@4.0.5
+pnpm add @typeonce/effect-machine@latest effect@4.0.0
 pnpm add --save-dev @typeonce/effect-machine-devtools@latest
 ```
 
 When pinning a release instead of using `latest`, use the same explicit version for both packages.
 
-The current release requires Node.js 22.19 or newer and stable Effect `^4.0.5`.
+The current release requires Node.js 22.19 or newer and stable Effect `^4.0.0`.
 
 ## Run the visualizer
 

packages/devtools/package.json

@@ -32,21 +32,21 @@
     "dev": "tsx src/bin.ts"
   },
   "dependencies": {
-    "@effect/platform-browser": "^4.0.5",
-    "@effect/platform-node": "^4.0.5",
-    "@effect/platform-node-shared": "^4.0.5",
+    "@effect/platform-browser": "^4.0.0",
+    "@effect/platform-node": "^4.0.0",
+    "@effect/platform-node-shared": "^4.0.0",
     "@typeonce/effect-machine": "workspace:^",
     "chokidar": "4.0.3",
     "elkjs": "0.12.0",
     "typescript": "6.0.3",
     "vite": "8.1.5"
   },
   "peerDependencies": {
-    "effect": "^4.0.5"
+    "effect": "^4.0.0"
   },
   "devDependencies": {
     "@types/node": "25.7.0",
-    "effect": "4.0.5",
+    "effect": "4.0.0",
     "tsx": "4.21.0"
   },
   "files": [

packages/effect-machine-react/package.json

@@ -49,17 +49,17 @@
     "@typeonce/effect-machine": "workspace:^"
   },
   "peerDependencies": {
-    "@effect/atom-react": "^4.0.5",
-    "effect": "^4.0.5",
+    "@effect/atom-react": "^4.0.0",
+    "effect": "^4.0.0",
     "react": ">=19.0.0 <20.0.0",
     "scheduler": ">=0.25.0 <0.28.0"
   },
   "devDependencies": {
-    "@effect/atom-react": "4.0.5",
+    "@effect/atom-react": "4.0.0",
     "@testing-library/react": "16.3.0",
     "@types/react": "19.2.16",
     "@types/react-dom": "19.2.3",
-    "effect": "4.0.5",
+    "effect": "4.0.0",
     "jsdom": "27.2.0",
     "react": "19.2.7",
     "react-dom": "19.2.7",

packages/effect-machine/README.md

@@ -34,10 +34,10 @@ Cluster and are exposed only through explicit integration boundaries.
 ## Install
 
 ```sh
-pnpm add @typeonce/effect-machine effect@4.0.5
+pnpm add @typeonce/effect-machine effect@4.0.0
 ```
 
-`effect` is a peer dependency requiring stable `^4.0.5`. Keep any installed
+`effect` is a peer dependency requiring stable `^4.0.0`. Keep any installed
 `@effect/*` packages on the same version as `effect`.
 
 Development and benchmarks use exact versions. CI checks both the pinned

packages/effect-machine/package.json

@@ -70,12 +70,12 @@
     "test:types": "tstyche"
   },
   "peerDependencies": {
-    "effect": "^4.0.5"
+    "effect": "^4.0.0"
   },
   "devDependencies": {
-    "@effect/vitest": "4.0.5",
+    "@effect/vitest": "4.0.0",
     "@types/node": "25.7.0",
-    "effect": "4.0.5",
+    "effect": "4.0.0",
     "tinybench": "2.9.0",
     "tstyche": "7.2.1",
     "typescript": "6.0.3",

pnpm-workspace.yaml

@@ -2,12 +2,12 @@ packages:
   - "packages/*"
 
 overrides:
-  effect: 4.0.5
-  "@effect/vitest": 4.0.5
-  "@effect/atom-react": 4.0.5
-  "@effect/platform-browser": 4.0.5
-  "@effect/platform-node": 4.0.5
-  "@effect/platform-node-shared": 4.0.5
+  effect: 4.0.0
+  "@effect/vitest": 4.0.0
+  "@effect/atom-react": 4.0.0
+  "@effect/platform-browser": 4.0.0
+  "@effect/platform-node": 4.0.0
+  "@effect/platform-node-shared": 4.0.0
 
 minimumReleaseAge: 1440
 minimumReleaseAgeExclude:

scripts/release-contract.test.mjs

@@ -43,17 +43,17 @@ test("Effect consumers accept stable 4.x while development versions stay synchro
   const effect = root.devDependencies.effect
   assert.match(effect, /^4\.\d+\.\d+$/)
   for (const manifest of [core, react, devtools]) {
-    assert.equal(manifest.peerDependencies.effect, "^4.0.5")
+    assert.equal(manifest.peerDependencies.effect, "^4.0.0")
     assert.equal(manifest.devDependencies.effect, effect)
   }
   assert.equal(root.devDependencies["@effect/vitest"], effect)
   assert.equal(core.devDependencies["@effect/vitest"], effect)
-  assert.equal(react.peerDependencies["@effect/atom-react"], "^4.0.5")
+  assert.equal(react.peerDependencies["@effect/atom-react"], "^4.0.0")
   assert.equal(react.devDependencies["@effect/atom-react"], effect)
   for (const name of ["@effect/platform-browser", "@effect/platform-node", "@effect/platform-node-shared"]) {
     assert.equal(
       devtools.dependencies[name],
-      "^4.0.5",
+      "^4.0.0",
       `${name} must accept the same stable Effect major as its peer`
     )
   }