build: convert repo from npm to pnpm

- import package-lock.json to pnpm-lock.yaml (resolved versions preserved) and remove package-lock.json
- add packageManager: pnpm@11.15.1 and pnpm-workspace.yaml (allowBuilds: esbuild for its postinstall)
- convert npm-isms in package.json scripts to pnpm equivalents
- CI: add pnpm/action-setup@v6, cache pnpm, pnpm install --frozen-lockfile, pnpm run; bump codecov-action to v7
- husky pre-commit: npx lint-staged -> pnpm exec lint-staged
- ignore files: prettierignore pnpm-lock.yaml; gitignore package-lock.json and yarn.lock

Author: DylanPiercey

.github/workflows/ci.yml

@@ -16,17 +16,19 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v6
       - name: Use node
         uses: actions/setup-node@v6
         with:
           node-version: 24
-          cache: npm
+          cache: pnpm
       - name: Install dependencies
-        run: npm ci
+        run: pnpm install --frozen-lockfile
       - name: Build
-        run: npm run build
+        run: pnpm run build
       - name: Lint Code
-        run: npm run lint
+        run: pnpm run lint
   test:
     runs-on: ${{ matrix.os }}
     name: "test: node@${{ matrix.node }} (${{ matrix.os }})"
@@ -38,17 +40,19 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v6
       - name: Use node@${{ matrix.node }}
         uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}
-          cache: npm
+          cache: pnpm
       - name: Install dependencies
-        run: npm ci
+        run: pnpm install --frozen-lockfile
       - name: Run tests
-        run: npm run ci:test
+        run: pnpm run ci:test
       - name: Report code coverage
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v7
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
   release:
@@ -62,19 +66,21 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v6
       - name: Setup node
         uses: actions/setup-node@v6
         with:
           node-version: 24
-          cache: npm
+          cache: pnpm
       - name: Install dependencies
-        run: npm ci
+        run: pnpm install --frozen-lockfile
       - name: Release
         id: changesets
         uses: changesets/action@v1
         with:
-          version: npm run version
-          publish: npm run release
+          version: pnpm run version
+          publish: pnpm run release
           commit: "[ci] release"
           title: "[ci] release"
         env:

.gitignore

@@ -17,3 +17,7 @@ dist
 # Coverage
 coverage
 lcov.info
+
+# Other lockfiles
+package-lock.json
+yarn.lock

.husky/pre-commit

@@ -1 +1 @@
-npx --no-install lint-staged
+pnpm exec lint-staged

.prettierignore

@@ -1,5 +1,5 @@
 .vscode
-package-lock.json
+pnpm-lock.yaml
 CHANGELOG.md
 node_modules
 coverage