Upgrade repo

.github/workflows/check.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node-version: [20.x]
+        node-version: [22.x]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        node-version: [18.x, 20.x]
+        node-version: [18.x, 20.x, 22.x]
 
     steps:
       - uses: actions/checkout@v4

eslint.config.js

@@ -0,0 +1,53 @@
+import js from "@eslint/js";
+import vitest from "@vitest/eslint-plugin";
+
+export default [
+  {
+    ignores: [
+      "build",
+      "coverage",
+      "test/fixtures",
+      "benchmark.input.js",
+      "test.*",
+    ],
+  },
+  {
+    plugins: {
+      vitest,
+    },
+    rules: {
+      ...js.recommended,
+      ...vitest.configs.recommended.rules,
+      "arrow-body-style": "error",
+      curly: "error",
+      "dot-notation": "error",
+      eqeqeq: ["error", "always", { null: "ignore" }],
+      "no-shadow": "error",
+      "no-restricted-syntax": [
+        "error",
+        {
+          selector: "SequenceExpression",
+          message:
+            "The comma operator is confusing and a common mistake. Don’t use it!",
+        },
+      ],
+      "no-var": "error",
+      "object-shorthand": "error",
+      "one-var": ["error", "never"],
+      "prefer-arrow-callback": "error",
+      "prefer-const": "error",
+      "prefer-destructuring": ["error", { object: true, array: false }],
+      "prefer-exponentiation-operator": "error",
+      "prefer-numeric-literals": "error",
+      "prefer-object-spread": "error",
+      "prefer-promise-reject-errors": "error",
+      "prefer-regex-literals": "error",
+      "prefer-rest-params": "error",
+      "prefer-spread": "error",
+      "prefer-template": "error",
+      "vitest/no-disabled-tests": "error",
+      "vitest/no-focused-tests": "error",
+      "vitest/valid-title": "off",
+    },
+  },
+];