Add some benchmarks

.eslintrc.json

@@ -114,7 +114,14 @@
     },
     "overrides": [
         { "files": ["Herebyfile.*", "**/__fixtures__/**"], "rules": { "no-restricted-globals": "off" } },
-        { "files": ["**/__tests__/**"], "rules": { "@typescript-eslint/no-empty-function": "off" } }
+        {
+            "files": ["**/__tests__/**"],
+            "rules": {
+                "@typescript-eslint/no-empty-function": "off",
+                "no-restricted-globals": "off",
+                "ava/no-import-test-files": "off"
+            }
+        }
     ],
     "ignorePatterns": ["**/dist/**", "**/node_modules/**", "bin/**", "coverage/**"]
 }

.github/workflows/codspeed.yml

@@ -0,0 +1,27 @@
+name: codspeed-benchmarks
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  benchmarks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+      - uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b # v4.0.3
+        with:
+          node-version: '20.15.1'
+
+      - run: npm ci
+      - run: npm run build
+
+      - name: Run benchmarks
+        uses: CodSpeedHQ/action@a58b84c0b61569a9cbb7cfb378cc849d65cf1ce5 # v2.4.3
+        with:
+          token: ${{ secrets.CODSPEED_TOKEN }}
+          run: 'node ./dist/__tests__/benchmarks/index.bench.js'