chore(ci): try to add Node.js v20 to build matrix

Author: boneskull

.github/workflows/nodejs.yml

@@ -11,6 +11,7 @@ jobs:
     strategy:
       matrix:
         include:
+          - node-version: '20'
           - node-version: '22'
           - node-version: '24'
     steps:
@@ -19,5 +20,10 @@ jobs:
       - uses: ./.github/actions/prepare
         with:
           node-version: ${{ matrix.node-version }}
+      - name: Test (Node v20.x)
+        if: matrix.node-version == '20'
+        # CAUTION: this only works in POSIX environments
+        run: npm run test:node20
       - name: Test
-        run: npm test
+        if: matrix.node-version != '20'
+        run: npm run test:runtime

package.json

@@ -59,8 +59,10 @@
     "lint:types": "tsc --noEmit",
     "prepare": "husky; run-s -s build",
     "test": "run-s test:runtime",
-    "test:runtime": "node --import tsx --test --test-reporter=spec \"test/**/*.test.ts\"",
-    "test:watch": "node --import tsx --test --test-reporter=spec --watch \"test/**/*.test.ts\""
+    "test:base": "node --import tsx --test --test-reporter=spec",
+    "test:node20": "node --import tsx --test --test-reporter=spec test/*.test.ts",
+    "test:runtime": "npm run test:base -- \"test/*.test.ts\"",
+    "test:watch": "npm run test:base -- --watch \"test/*.test.ts\""
   },
   "devDependencies": {
     "@commitlint/cli": "20.2.0",