Switch from pnpm to Yarn (Berry 4)

.github/workflows/deploy.yml

@@ -13,38 +13,34 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          version: 9
-
       - name: Install Node.js
         uses: actions/setup-node@v4
         with:
           node-version: 24
-          cache: pnpm
+          cache: yarn
 
       # `comline-simulator` is a git dependency that compiles to WASM in its
-      # `prepare` (Rust → wasm-bindgen). The runner has cargo; this caches the
-      # one-time `wasm-bindgen-cli` build across runs.
+      # `prepack` (Rust → wasm-bindgen). The runner has cargo + wasm-opt; this
+      # caches the one-time `wasm-bindgen-cli` build across runs.
       - name: Cache cargo
         uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin
             ~/.cargo/registry
             ~/.cargo/git
-          key: ${{ runner.os }}-cargo-${{ hashFiles('pnpm-lock.yaml') }}
+          key: ${{ runner.os }}-cargo-${{ hashFiles('yarn.lock') }}
           restore-keys: ${{ runner.os }}-cargo-
 
       - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+        env:
+          COMLINE_SIMULATOR_SCRIPT: '0' # the tutorial only needs the lean sim
+        run: yarn install
 
       - name: build
         env:
           BASE_PATH: '/${{ github.event.repository.name }}'
-        run: |
-          pnpm run build
+        run: yarn build
 
       - name: Upload Artifacts
         uses: actions/upload-pages-artifact@v3

.gitignore

@@ -9,6 +9,15 @@ node_modules
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
 
+# Yarn Berry — keep the pinned release, drop the rest
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+.pnp.*
+
 
 # JetBrains IDEA settings
 .idea/

.yarnrc.yml

@@ -0,0 +1,11 @@
+yarnPath: .yarn/releases/yarn-4.18.0.cjs
+nodeLinker: node-modules
+
+# `comline-simulator` is the sim engine — a git dep that builds itself to WASM
+# in its `prepack`/`prepare`. Yarn 4 gates git deps and disables scripts by
+# default; both are needed. The build is not byte-reproducible (wasm-opt runs
+# only where installed) so let Yarn refresh the tarball checksum.
+approvedGitRepositories:
+  - "https://github.com/ComlineProject/simulator.git"
+enableScripts: true
+checksumBehavior: update

package.json

@@ -6,7 +6,7 @@
     "dev": "vite dev",
     "build": "vite build",
     "preview": "vite preview",
-    "test": "npm run test:integration && npm run test:unit",
+    "test": "yarn test:integration && yarn test:unit",
     "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
     "lint": "prettier --check . && eslint .",
@@ -36,13 +36,12 @@
   "type": "module",
   "dependencies": {
     "@sveltejs/adapter-static": "^3.0.10",
-    "comline-simulator": "github:ComlineProject/simulator#6e197b18e61ead0fbcb36321ab21c5ad2093123d"
+    "comline-simulator": "git+https://github.com/ComlineProject/simulator.git#eff27ce9b077ec411c299743b328a24089387215"
   },
-  "pnpm": {
-    "overrides": {
-      "cookie": "^0.7.2",
-      "flatted": "^3.4.2",
-      "yaml": "^2.8.1"
-    }
-  }
+  "resolutions": {
+    "cookie": "^0.7.2",
+    "flatted": "^3.4.2",
+    "yaml": "^2.8.1"
+  },
+  "packageManager": "yarn@4.18.0"
 }