chore: drop Node.js 18 (#5674)

Author: stevenjoezhang

.github/workflows/benchmark.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node-version: ["18", "20", "22"]
+        node-version: ["20", "22", "24"]
       fail-fast: false
     steps:
       - uses: actions/checkout@v4
@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node-version: ["18", "20", "22"]
+        node-version: ["20", "22", "24"]
       fail-fast: false
     env:
       comment_file: ".tmp-comment-flamegraph-node${{ matrix.node-version }}.md"

.github/workflows/tester.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: ["18", "20", "22"]
+        node-version: ["20", "22", "24"]
       fail-fast: false
     steps:
       - uses: actions/checkout@v4

package.json

@@ -90,6 +90,6 @@
     "typescript": "^5.3.2"
   },
   "engines": {
-    "node": ">=18"
+    "node": ">=20.19.0"
   }
 }