deps: adjust eslint setup

.github/workflows/tests.yml

@@ -21,7 +21,9 @@ jobs:
       - run: npm run lint
       - run: npm run format
       - run: node tools/toc.js check
-      - run: npx markdown-link-check -p README.md
+      # markdown-link-check disabled until https://github.com/tcort/markdown-link-check/issues/304
+      # is fixed
+      # - run: npx markdown-link-check -p README.md
 
   integration:
     runs-on: ${{ matrix.os }}
@@ -48,7 +50,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node: [16, 18, 20]
+        node: [18, 20]
         eslint: [latest]
         include:
           # ESLint 4.7 support: lowest version supported
@@ -66,6 +68,12 @@ jobs:
             node: 20
             eslint: next
 
+            # Node 16 support: use ESLint v8 becacuse they dropped node 16 support in v9. Will be
+            # dropped in next major.
+          - os: ubuntu-latest
+            node: 16
+            eslint: "8"
+
           # Windows support
           - os: windows-latest
             node: 20

eslint.config.mjs

@@ -0,0 +1,38 @@
+import js from "@eslint/js"
+
+export default [
+  js.configs.recommended,
+  {
+    rules: {
+      "no-constant-condition": "off",
+      "no-unused-vars": [
+        "error",
+        { varsIgnorePattern: "^_", argsIgnorePattern: "^_" },
+      ],
+    },
+
+    languageOptions: {
+      globals: {
+        process: "readonly",
+        console: "readonly",
+        require: "readonly",
+        module: "readonly",
+        Buffer: "readonly",
+        __dirname: "readonly",
+        setTimeout: "readonly",
+      },
+    },
+  },
+
+  {
+    files: ["**/__tests__/**/*.js"],
+    languageOptions: {
+      globals: {
+        expect: "readonly",
+        test: "readonly",
+        it: "readonly",
+        describe: "readonly",
+      },
+    },
+  },
+]

src/index.js

@@ -72,12 +72,12 @@ function iterateESLintModules(fn) {
     let eslintPath, eslintVersion
     try {
       eslintPath = require.resolve("eslint")
-    } catch (e) {
+    } catch {
       eslintPath = "(not found)"
     }
     try {
       eslintVersion = require("eslint/package.json").version
-    } catch (e) {
+    } catch {
       eslintVersion = "n/a"
     }
 

src/verifyWithFlatConfigPatch.js

@@ -113,7 +113,7 @@ const externalHtmlPlugins = [
 function tryRequire(name) {
   try {
     return require(name)
-  } catch (e) {
+  } catch {
     return undefined
   }
 }