failing to upgrade eslint

.eslintignore

@@ -1,25 +0,0 @@
-krill-parser.js
-krill.pegjs
-.eslintrc.json
-server.js
-tidal-sniffer.js
-*.jsx
-tunejs.js
-out/**
-postcss.config.js
-postcss.config.cjs
-tailwind.config.js
-tailwind.config.cjs
-vite.config.js
-/**/dist/**/*
-!**/*.mjs
-**/*.tsx
-**/*.ts
-**/*.json
-**/dev-dist
-**/dist
-/src-tauri/target/**/*
-reverbGen.mjs
-hydra.mjs
-jsdoc-synonyms.js
-packages/hs2js/src/hs2js.mjs

eslint.config.mjs

@@ -0,0 +1,113 @@
+import _import from 'eslint-plugin-import';
+import { fixupPluginRules } from '@eslint/compat';
+import globals from 'globals';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import js from '@eslint/js';
+import { FlatCompat } from '@eslint/eslintrc';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+export default [
+  {
+    files: ['**/*.mjs', '**/*.js'],
+    plugins: {
+      import: fixupPluginRules(_import),
+    },
+    ignores: [
+      '**/dist/', // why the hell does this not work
+    ],
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.browser,
+      },
+
+      ecmaVersion: 'latest',
+      sourceType: 'module',
+    },
+
+    rules: {
+      /* 
+      'constructor-super': 'error',
+      'for-direction': 'error',
+      'getter-return': 'error',
+      'no-async-promise-executor': 'error',
+      'no-case-declarations': 'error',
+      'no-class-assign': 'error',
+      'no-compare-neg-zero': 'error',
+      'no-cond-assign': 'error',
+      'no-const-assign': 'error',
+      'no-constant-binary-expression': 'error',
+      'no-constant-condition': 'error',
+      'no-control-regex': 'error',
+      'no-debugger': 'error',
+      'no-delete-var': 'error',
+      'no-dupe-args': 'error',
+      'no-dupe-class-members': 'error',
+      'no-dupe-else-if': 'error',
+      'no-dupe-keys': 'error',
+      'no-duplicate-case': 'error',
+      'no-empty': 'error',
+      'no-empty-character-class': 'error',
+      'no-empty-pattern': 'error',
+      'no-empty-static-block': 'error',
+      'no-ex-assign': 'error',
+      'no-extra-boolean-cast': 'error',
+      'no-fallthrough': 'error',
+      'no-func-assign': 'error',
+      'no-global-assign': 'error',
+      'no-import-assign': 'error',
+      'no-invalid-regexp': 'error',
+      'no-irregular-whitespace': 'error',
+      'no-loss-of-precision': 'error',
+      'no-misleading-character-class': 'error',
+      'no-new-native-nonconstructor': 'error',
+      'no-nonoctal-decimal-escape': 'error',
+      'no-obj-calls': 'error',
+      'no-octal': 'error',
+      'no-prototype-builtins': 'error',
+      'no-redeclare': 'error',
+      'no-regex-spaces': 'error',
+      'no-self-assign': 'error',
+      'no-setter-return': 'error',
+      'no-shadow-restricted-names': 'error',
+      'no-sparse-arrays': 'error',
+      'no-this-before-super': 'error',
+      'no-undef': 'error',
+      'no-unexpected-multiline': 'error',
+      'no-unreachable': 'error',
+      'no-unsafe-finally': 'error',
+      'no-unsafe-negation': 'error',
+      'no-unsafe-optional-chaining': 'error',
+      'no-unused-labels': 'error',
+      'no-unused-private-class-members': 'error',
+      'no-unused-vars': 'error',
+      'no-useless-backreference': 'error',
+      'no-useless-catch': 'error',
+      'no-useless-escape': 'error',
+      'no-with': 'error',
+      'require-yield': 'error',
+      'use-isnan': 'error',
+      'valid-typeof': 'error', */
+      'no-undef': 'error',
+
+      'no-unused-vars': [
+        'warn',
+        {
+          destructuredArrayIgnorePattern: '.',
+          ignoreRestSiblings: false,
+        },
+      ],
+
+      'import/no-extraneous-dependencies': [
+        'error',
+        {
+          devDependencies: true,
+        },
+      ],
+    },
+  },
+];

package.json

@@ -21,7 +21,7 @@
     "osc": "cd packages/osc && npm run server",
     "jsdoc": "jsdoc packages/ -c jsdoc/jsdoc.config.json",
     "jsdoc-json": "jsdoc packages/ --template ./node_modules/jsdoc-json --destination doc.json -c jsdoc/jsdoc.config.json",
-    "lint": "eslint . --ext mjs,js --quiet",
+    "lint": "eslint . --quiet",
     "codeformat": "prettier --write .",
     "format-check": "prettier --check .",
     "report-undocumented": "npm run jsdoc-json && node jsdoc/undocumented.mjs > undocumented.json",
@@ -55,16 +55,19 @@
     "@strudel/xen": "workspace:*"
   },
   "devDependencies": {
+    "@eslint/compat": "^1.2.1",
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.13.0",
     "@tauri-apps/cli": "^1.5.9",
     "@vitest/ui": "^2.1.3",
     "acorn": "^8.13.0",
-    "dependency-tree": "^10.0.9",
-    "eslint": "^8.56.0",
+    "dependency-tree": "^11.0.1",
+    "eslint": "^9.13.0",
     "eslint-plugin-import": "^2.31.0",
     "events": "^3.3.0",
+    "globals": "^15.11.0",
     "jsdoc": "^4.0.3",
     "jsdoc-json": "^2.0.2",
-    "jsdoc-to-markdown": "^8.0.0",
     "lerna": "^8.1.8",
     "prettier": "^3.3.3",
     "rollup-plugin-visualizer": "^5.12.0",