refactor: use eslint.config.mjs instead of .eslintrc

This was done automatically by running
`npx  @eslint/migrate-config .eslintrc.js`

Signed-off-by: Philip Molares <philip.molares@udo.edu>

.eslintignore

@@ -1,3 +0,0 @@
-lib/ot
-public/vendor
-public/build

.eslintrc.js

@@ -1,8 +0,0 @@
-module.exports = {
-  root: true,
-  extends: ['standard'],
-  env: {
-    node: true
-  },
-  rules: {}
-}

eslint.config.mjs

@@ -0,0 +1,25 @@
+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)
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all
+})
+
+export default [{
+  ignores: ['lib/ot', 'public/vendor', 'public/build']
+}, ...compat.extends('standard'), {
+  languageOptions: {
+    globals: {
+      ...globals.node
+    }
+  },
+
+  rules: {}
+}]

package.json

@@ -137,6 +137,8 @@
     "url": "https://github.com/hedgedoc/hedgedoc.git"
   },
   "devDependencies": {
+    "@eslint/eslintrc": "^3.2.0",
+    "@eslint/js": "^9.19.0",
     "@hedgedoc/codemirror-5": "5.65.12",
     "abcjs": "6.4.4",
     "babel-cli": "6.26.0",
@@ -166,6 +168,7 @@
     "flowchart.js": "1.18.0",
     "fork-awesome": "1.2.0",
     "gist-embed": "2.6.0",
+    "globals": "^15.14.0",
     "highlight.js": "10.7.3",
     "html-webpack-plugin": "4.5.2",
     "imports-loader": "1.2.0",

yarn.lock

@@ -293,7 +293,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@eslint/js@npm:9.19.0":
+"@eslint/js@npm:9.19.0, @eslint/js@npm:^9.19.0":
   version: 9.19.0
   resolution: "@eslint/js@npm:9.19.0"
   checksum: 10/d8133a83330676d5f0827713af2e9bbf35530631a93520fb59ead6b827a325c54fdd7ad99f2158f895fb393c47bbc55dfdaa945998a647f3b9230f1d5324a626
@@ -1312,6 +1312,8 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "HedgeDoc@workspace:."
   dependencies:
+    "@eslint/eslintrc": "npm:^3.2.0"
+    "@eslint/js": "npm:^9.19.0"
     "@hedgedoc/codemirror-5": "npm:5.65.12"
     "@hedgedoc/meta-marked": "npm:14.1.0"
     "@passport-next/passport-openid": "npm:1.0.0"
@@ -1367,6 +1369,7 @@ __metadata:
     fork-awesome: "npm:1.2.0"
     formidable: "npm:2.1.2"
     gist-embed: "npm:2.6.0"
+    globals: "npm:^15.14.0"
     graceful-fs: "npm:4.2.11"
     helmet: "npm:8.0.0"
     highlight.js: "npm:10.7.3"
@@ -7541,7 +7544,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"globals@npm:^15.11.0":
+"globals@npm:^15.11.0, globals@npm:^15.14.0":
   version: 15.14.0
   resolution: "globals@npm:15.14.0"
   checksum: 10/e35ffbdbc024d6381efca906f67211a7bbf935db2af8c14a65155785479e28b3e475950e5933bb6b296eed54b6dcd924e25b26dbc8579b1bde9d5d25916e1c5f