Upgrade to Rescript 12 Beta 2

.github/workflows/ci.yml

@@ -27,15 +27,12 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 24
 
       - name: NPM install
         run: npm ci
 
-      - name: Build
-        run: npx rescript
-
-      - name: Pack
+      - name: Pack (includes rescript build)
         run: npm pack
 
       - name: Prepare package upload
@@ -74,7 +71,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20 # minimum supported version
 
       - name: Download artifacts
         uses: actions/download-artifact@v4
@@ -103,7 +100,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 24
           registry-url: https://registry.npmjs.org # Needed to make auth work for publishing
 
       - name: Download artifacts

.node-version

@@ -1 +1 @@
-18
+24

package.json

@@ -12,7 +12,7 @@
   "author": "",
   "license": "ISC",
   "engines": {
-    "node": ">=18"
+    "node": ">=20"
   },
   "repository": {
     "type": "git",
@@ -36,13 +36,12 @@
     "create-rescript-app": "out/create-rescript-app.mjs"
   },
   "devDependencies": {
-    "@clack/prompts": "^0.9.1",
-    "@rescript/core": "^1.3.0",
+    "@clack/prompts": "^0.11.0",
     "@rollup/plugin-commonjs": "^28.0.1",
-    "@rollup/plugin-node-resolve": "^15.2.3",
+    "@rollup/plugin-node-resolve": "^16.0.1",
     "@rollup/plugin-terser": "^0.4.4",
     "compare-versions": "^6.1.0",
-    "rescript": "^11.1.0",
+    "rescript": "^12.0.0-beta.2",
     "rollup": "^4.14.3"
   }
 }

rescript.json

@@ -8,7 +8,5 @@
     "module": "esmodule",
     "in-source": true
   },
-  "suffix": ".res.mjs",
-  "bs-dependencies": ["@rescript/core"],
-  "bsc-flags": ["-open RescriptCore"]
+  "suffix": ".res.mjs"
 }

src/ErrorUtils.res

@@ -1,5 +1,5 @@
 let getErrorMessage = exn =>
-  switch exn->Exn.message {
+  switch exn->JsExn.message {
   | Some(message) => message
   | None => exn->String.make
   }

src/JsonUtils.res

@@ -2,7 +2,7 @@ open Node
 
 let readJsonFile = async filename => {
   let contents = await Fs.Promises.readFile(filename)
-  JSON.parseExn(contents)
+  JSON.parseOrThrow(contents)
 }
 
 let updateFile = async (filename, updateFn) => {
@@ -13,7 +13,7 @@ let updateFile = async (filename, updateFn) => {
 
 let updateJsonFile = (filename, updateFn) =>
   updateFile(filename, contents => {
-    let json = JSON.parseExn(contents)
+    let json = JSON.parseOrThrow(contents)
     updateFn(json)
     JSON.stringify(json, ~space=2)
   })

src/Main.res

@@ -10,11 +10,8 @@ let getVersion = async () => {
 
 let handleError = async (~outro, perform) =>
   try await perform() catch {
-  | Exn.Error(error) =>
-    switch error->Exn.message {
-    | Some(message) => P.Log.error("Error: " ++ message)
-    | None => ()
-    }
+  | JsExn(error) =>
+    P.Log.error("Error: " ++ error->ErrorUtils.getErrorMessage)
 
     P.outro(outro)
 

src/NpmRegistry.res

@@ -56,6 +56,6 @@ let getPackageVersions = async (packageName, range) => {
     }
 
   | responseNotOk => Error(HttpError({status: responseNotOk.status}))
-  | exception Exn.Error(exn) => Error(FetchError({message: exn->ErrorUtils.getErrorMessage}))
+  | exception JsExn(exn) => Error(FetchError({message: exn->ErrorUtils.getErrorMessage}))
   }
 }

src/RescriptVersions.res

@@ -44,12 +44,12 @@ let promptVersions = async () => {
     let selectOptions = {ClackPrompts.message: "ReScript version?", options, ?initialValue}
 
     await P.select(selectOptions)->P.resultOrRaise
-  | Error(error) => error->NpmRegistry.getFetchErrorMessage->Error.make->Error.raise
+  | Error(error) => error->NpmRegistry.getFetchErrorMessage->JsError.throwWithMessage
   }
 
   let rescriptCoreVersions = switch rescriptCoreVersionsResult {
   | Ok(versions) => versions
-  | Error(error) => error->NpmRegistry.getFetchErrorMessage->Error.make->Error.raise
+  | Error(error) => error->NpmRegistry.getFetchErrorMessage->JsError.throwWithMessage
   }
 
   let rescriptCoreVersions = getCompatibleRescriptCoreVersions(

src/bindings/ClackPrompts.res

@@ -63,7 +63,7 @@ let resultOrRaise = async promise => {
   let result = await promise
 
   if result->isCancel {
-    raise(Canceled)
+    throw(Canceled)
   } else {
     result->unsafeGetResultValue
   }