1 files changed, 111 insertions, 0 deletions
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 000000000..d298f0462
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,111 @@
+import { fixupConfigRules, fixupPluginRules } from "@eslint/compat";
+import react from "eslint-plugin-react";
+import reactHooks from "eslint-plugin-react-hooks";
+import onlyAscii from "eslint-plugin-only-ascii";
+import testingLibrary from "eslint-plugin-testing-library";
+import jest from "eslint-plugin-jest";
+import jestDom from "eslint-plugin-jest-dom";
+import jsdoc from "eslint-plugin-jsdoc";
+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: ["src/main/resources/static/scripts.js", "target/**/*"],
+}, ...fixupConfigRules(compat.extends(
+    "eslint:recommended",
+    "plugin:promise/recommended",
+    "plugin:react/recommended",
+    "plugin:react/jsx-runtime",
+    "plugin:react-hooks/recommended",
+    "plugin:jest/recommended",
+    "plugin:jest-dom/recommended",
+)),
+jsdoc.configs['flat/recommended'],
+{
+    plugins: {
+        react: fixupPluginRules(react),
+        "react-hooks": fixupPluginRules(reactHooks),
+        "only-ascii": onlyAscii,
+        "testing-library": testingLibrary,
+        jest: fixupPluginRules(jest),
+        "jest-dom": fixupPluginRules(jestDom),
+        jsdoc,
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+            ...globals.node,
+            ...jest.environments.globals.globals,
+        },
+
+        ecmaVersion: 12,
+        sourceType: "module",
+
+        parserOptions: {
+            ecmaFeatures: {
+                jsx: true,
+            },
+        },
+    },
+
+    settings: {
+        react: {
+            pragma: "React",
+            version: "18",
+        },
+
+        jsdoc: {
+            mode: "typescript",
+        },
+    },
+
+    rules: {
+        quotes: ["error", "single"],
+        "no-cond-assign": "warn",
+        "no-unused-vars": "warn",
+        "no-useless-escape": "warn",
+
+        "only-ascii/only-ascii": ["warn", {
+            allowedChars: "✓←→♡ ·—©",
+        }],
+
+        "react/prop-types": "off",
+        "testing-library/no-node-access": "off",
+
+        "jsdoc/require-jsdoc": ["warn", {
+            publicOnly: true,
+        }],
+
+        "jsdoc/require-returns": "off",
+        "jsdoc/require-returns-type": "off",
+        "jsdoc/require-property-description": "off",
+        "jsdoc/require-param-description": "off",
+
+        "jsdoc/check-tag-names": ["error", {
+            definedTags: ["jest-environment"],
+        }],
+
+        "promise/always-return": "off",
+
+        semi: ["error", "never", {
+            beforeStatementContinuationChars: "always",
+        }],
+
+        "semi-style": ["error", "last"],
+    },
+}, ...compat.extends("plugin:testing-library/react").map(config => ({
+    ...config,
+    files: ["**/__tests__/**/*.[jt]s?(x)", "**/?(*.)+(spec|test).[jt]s?(x)"],
+}))];