Update eslint to 9.34.0

crates/mdbook-html/front-end/js/book.js

@@ -85,7 +85,6 @@ function playground_text(playground, hidden = true) {
         const re = /extern\s+crate\s+([a-zA-Z_0-9]+)\s*;/g;
         const snippet_crates = [];
         let item;
-        // eslint-disable-next-line no-cond-assign
         while (item = re.exec(txt)) {
             snippet_crates.push(item[1]);
         }
@@ -351,7 +350,7 @@ aria-label="Show hidden lines"></button>';
         let theme = null;
         try {
             theme = localStorage.getItem('mdbook-theme');
-        } catch (e) {
+        } catch {
             // ignore error.
         }
         return theme;
@@ -412,7 +411,7 @@ aria-label="Show hidden lines"></button>';
         if (store) {
             try {
                 localStorage.setItem('mdbook-theme', theme);
-            } catch (e) {
+            } catch {
                 // ignore error.
             }
         }
@@ -560,7 +559,7 @@ aria-label="Show hidden lines"></button>';
         sidebar.setAttribute('aria-hidden', false);
         try {
             localStorage.setItem('mdbook-sidebar', 'visible');
-        } catch (e) {
+        } catch {
             // Ignore error.
         }
     }
@@ -574,7 +573,7 @@ aria-label="Show hidden lines"></button>';
         sidebar.setAttribute('aria-hidden', true);
         try {
             localStorage.setItem('mdbook-sidebar', 'hidden');
-        } catch (e) {
+        } catch {
             // Ignore error.
         }
     }

eslint.config.mjs

@@ -0,0 +1,72 @@
+import { defineConfig, globalIgnores } from "eslint/config";
+
+export default defineConfig([
+    globalIgnores(["**/**min.js", "**/highlight.js", "**/playground_editor/*"]),
+    {
+        rules: {
+            indent: ["error", 4],
+            "linebreak-style": ["error", "unix"],
+            quotes: ["error", "single"],
+            semi: ["error", "always"],
+
+            "brace-style": ["error", "1tbs", {
+                allowSingleLine: false,
+            }],
+
+            curly: "error",
+            "no-trailing-spaces": "error",
+            "no-multi-spaces": "error",
+
+            "keyword-spacing": ["error", {
+                before: true,
+                after: true,
+            }],
+
+            "comma-spacing": ["error", {
+                before: false,
+                after: true,
+            }],
+
+            "arrow-spacing": ["error", {
+                before: true,
+                after: true,
+            }],
+
+            "key-spacing": ["error", {
+                beforeColon: false,
+                afterColon: true,
+                mode: "strict",
+            }],
+
+            "func-call-spacing": ["error", "never"],
+            "space-infix-ops": "error",
+            "space-before-function-paren": ["error", "never"],
+            "space-before-blocks": "error",
+
+            "no-console": ["error", {
+                allow: ["warn", "error"],
+            }],
+
+            "comma-dangle": ["error", "always-multiline"],
+            "comma-style": ["error", "last"],
+
+            "max-len": ["error", {
+                code: 100,
+                tabWidth: 2,
+            }],
+
+            "eol-last": ["error", "always"],
+            "no-extra-parens": "error",
+            "arrow-parens": ["error", "as-needed"],
+
+            "no-unused-vars": ["error", {
+                argsIgnorePattern: "^_",
+                varsIgnorePattern: "^_",
+            }],
+
+            "prefer-const": ["error"],
+            "no-var": "error",
+            eqeqeq: "error",
+        },
+    },
+]);

package.json

@@ -1,10 +1,10 @@
 {
   "dependencies": {
     "browser-ui-test": "0.21.1",
-    "eslint": "^8.57.1"
+    "eslint": "^9.34.0"
   },
   "scripts": {
-    "lint": "eslint crates/mdbook-html/front-end/*js crates/mdbook-html/front-end/**/*js",
+    "lint": "eslint --no-warn-ignored crates/mdbook-html/front-end/*js crates/mdbook-html/front-end/**/*js",
     "lint-fix": "eslint --fix crates/mdbook-html/front-end/*js crates/mdbook-html/front-end/**/*js"
   }
 }