chore: upgrade deps, support node v26.

.github/workflows/ci.yml

@@ -14,19 +14,19 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        version: ['22.21.1', '24.11.1']
+        version: ['22.21.1', '24.16.0', '26.2.0']
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v6.0.2
       - name: Setup Node
-        uses: actions/setup-node@v4.3.0
+        uses: actions/setup-node@v6.4.0
         with:
           node-version: ${{ matrix.version }}
       - name: Install Dependencies
         run: npm ci
       - name: Save error log
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@v7.0.1
         if: ${{ failure() }}
         with:
           name: npm-debug-log-${{ hashFiles('package-lock.json') }}
@@ -36,7 +36,7 @@ jobs:
       - name: Test
         run: npm test
       - name: Report Coverage
-        uses: codecov/codecov-action@v5.5.1
+        uses: codecov/codecov-action@v6.0.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
       - name: Pack

.github/workflows/publish.yml

@@ -14,15 +14,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v6.0.2
       - name: Setup Node
-        uses: actions/setup-node@v4.3.0
+        uses: actions/setup-node@v6.4.0
         with:
-          node-version: '24.11.1'
+          node-version: '26.2.0'
       - name: Install Dependencies
         run: npm ci
       - name: Save error log
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@v7.0.1
         if: ${{ failure() }}
         with:
           name: npm-debug-log-${{ hashFiles('package-lock.json') }}
@@ -32,7 +32,7 @@ jobs:
       - name: Pack
         run: npm pack
       - name: Push to NPM registry
-        uses: JS-DevTools/npm-publish@v4.1.1
+        uses: JS-DevTools/npm-publish@v4.1.5
         with:
           access: public
           tag: ${{ contains(github.ref, '-') && 'next' || 'latest' }}

.prettierignore

@@ -0,0 +1,3 @@
+# Fixture tsconfig files intentionally use JSONC patterns (comments, dangling commas)
+# to validate parser/compiler behavior. Do not auto-format them with Prettier.
+test/__fixtures__/**/tsconfig*.json

README.md

@@ -19,7 +19,7 @@ Tool for building a Node.js [dual package](https://nodejs.org/api/packages.html#
 
 ## Requirements
 
-- Node >= 22.21.1 (<23) or >= 24 (<25)
+- Node >= 22.21.1 (<23), >= 24 (<25), or >= 26 (<27)
 
 ## Example