Switch from npm to pnpm

Author: raszi

.github/workflows/ci.yml

@@ -13,25 +13,21 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
+      # The action reads the pnpm version from the packageManager field in package.json.
+      - name: Install pnpm
+        uses: pnpm/action-setup@v6
+
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
           node-version: "22"
-          cache: "npm"
-
-      - name: Cache node modules
-        uses: actions/cache@v4
-        with:
-          path: node_modules
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
+          cache: "pnpm"
 
       - name: Install dependencies
-        run: npm ci
+        run: pnpm install --frozen-lockfile
 
       - name: Run lint
-        run: npm run lint
+        run: pnpm run lint
 
       - name: Run build
-        run: npm run build
+        run: pnpm run build

.prettierignore

@@ -1,2 +1,2 @@
-package-lock.json
+pnpm-lock.yaml
 devenv.lock

README.md

@@ -5,9 +5,9 @@ Formats source code from stdin and writes the formatted code to stdout.
 ## Install
 
 ```sh
-npm install
-npm run build
-npm link
+pnpm install
+pnpm run build
+pnpm add --global "$PWD"
 ```
 
 ## Usage
@@ -49,7 +49,7 @@ To see all the options, run `format-code shortcuts --help`.
 
 ## Development
 
-The project uses [devenv](https://devenv.sh) to install Node.js and npm. To
+The project uses [devenv](https://devenv.sh) to install Node.js and pnpm. To
 enter the dev shell, run:
 
 ```sh

devenv.nix

@@ -3,7 +3,7 @@
 {
   languages.javascript = {
     enable = true;
-    npm.enable = true;
+    pnpm.enable = true;
   };
 
   git-hooks.hooks = {
@@ -22,11 +22,12 @@
       settings.binPath = "./node_modules/.bin/prettier";
     };
 
-    # The hook list has no TypeScript hook, so the hook runs the npm script.
+    # The hook list has no TypeScript hook.
+    # Use the TypeScript from node_modules, so the hook and CI use the same version.
     tsc = {
       enable = true;
       name = "tsc";
-      entry = "npm run types";
+      entry = "./node_modules/.bin/tsc --noEmit";
       files = "\\.ts$|^tsconfig\\.json$";
       pass_filenames = false;
     };