Migrated to ESLint 9+.

eslint.config.mjs

@@ -0,0 +1,63 @@
+import globals from "globals";
+import js from "@eslint/js";
+
+export default [
+    js.configs.recommended,
+    {
+        files: ["**/*.js"],
+        rules: {
+            "camelcase": ["off", {"properties": "always"}],
+            "comma-spacing": ["error", {"before": false, "after": true}],
+            "curly": ["error", "all"],
+            "dot-notation": ["error", {"allowKeywords": true}],
+            "eqeqeq": ["error"],
+            "indent": ["error", 4],
+            "key-spacing": ["error", {"beforeColon": false, "afterColon": true}],
+            "linebreak-style": ["error", "unix"],
+            "new-cap": ["off", {"newIsCap": true, "capIsNew": true}],
+            "no-alert": ["off"],
+            "no-eval": ["error"],
+            "no-extend-native": ["error", {"exceptions": ["Date", "String"]}],
+            "no-multi-spaces": ["error"],
+            "no-octal-escape": ["error"],
+            "no-script-url": ["error"],
+            "no-shadow": ["error", {"hoist": "functions"}],
+            "no-underscore-dangle": ["error"],
+            "no-unused-vars": ["error", {"vars": "local", "args": "none"}],
+            "no-var": ["error"],
+            "prefer-const": ["error"],
+            "quotes": ["off", "single"],
+            "semi": ["error", "always"],
+            "space-before-blocks": ["error", "always"],
+            "space-before-function-paren": ["error", {"anonymous": "never", "named": "never"}],
+            "space-infix-ops": ["error", {"int32Hint": false}],
+            "strict": ["error", "global"]
+        },
+        languageOptions: {
+            ecmaVersion: 6,
+            sourceType: "script",
+            globals: {
+                ...globals.browser,
+                ...globals.commonjs,
+                "django": false
+            }
+        }
+    },
+    {
+        files: ["**/*.mjs"],
+        languageOptions: {
+            sourceType: "module"
+        }
+    },
+    {
+        ignores: [
+            "**/*.min.js",
+            "**/vendor/**/*.js",
+            "django/contrib/gis/templates/**/*.js",
+            "django/views/templates/*.js",
+            "docs/_build/**/*.js",
+            "node_modules/**.js",
+            "tests/**/*.js",
+        ]
+    }
+];