chore: update eslint to use new config

Author: zapteryx

eslint.config.mjs

@@ -0,0 +1,120 @@
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import globals from "globals";
+import tsParser from "@typescript-eslint/parser";
+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: ["**/locales/", "**/dist/", "**/scripts/"],
+}, ...compat.extends(
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+), {
+    plugins: {
+        "@typescript-eslint": typescriptEslint,
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.node,
+        },
+
+        parser: tsParser,
+        ecmaVersion: 2022,
+        sourceType: "module",
+    },
+
+    rules: {
+        "arrow-spacing": ["warn", {
+            before: true,
+            after: true,
+        }],
+
+        "brace-style": ["error", "1tbs", {
+            allowSingleLine: true,
+        }],
+
+        "comma-dangle": ["error", "always-multiline"],
+        "comma-spacing": "error",
+        "comma-style": "error",
+        curly: ["error", "multi-line", "consistent"],
+        "dot-location": ["error", "property"],
+        "handle-callback-err": "off",
+        "keyword-spacing": "error",
+
+        "max-nested-callbacks": ["error", {
+            max: 4,
+        }],
+
+        "max-statements-per-line": ["error", {
+            max: 2,
+        }],
+
+        "no-console": "off",
+        "no-empty-function": "error",
+        "no-floating-decimal": "error",
+        "no-inline-comments": "error",
+        "no-lonely-if": "error",
+        "no-multi-spaces": "error",
+
+        "no-multiple-empty-lines": ["error", {
+            max: 2,
+            maxEOF: 1,
+            maxBOF: 0,
+        }],
+
+        "no-return-await": "error",
+        "no-shadow": "off",
+        "no-trailing-spaces": ["error"],
+        "no-var": "error",
+        "object-curly-spacing": ["error", "always"],
+        "prefer-const": "error",
+
+        quotes: ["error", "single", {
+            avoidEscape: true,
+            allowTemplateLiterals: false,
+        }],
+
+        semi: ["error", "always"],
+        "space-before-blocks": "error",
+
+        "space-before-function-paren": ["error", {
+            anonymous: "never",
+            named: "never",
+            asyncArrow: "always",
+        }],
+
+        "space-in-parens": "error",
+        "space-infix-ops": "error",
+        "space-unary-ops": "error",
+        "spaced-comment": "error",
+        yoda: "error",
+
+        "@typescript-eslint/no-shadow": ["error", {
+            allow: ["err", "resolve", "reject"],
+        }],
+
+        "@typescript-eslint/explicit-function-return-type": ["error", {
+            allowTypedFunctionExpressions: false,
+        }],
+
+        "@typescript-eslint/consistent-type-imports": ["error"],
+
+        "@typescript-eslint/no-unused-vars": ["error", {
+            argsIgnorePattern: "^_",
+            varsIgnorePattern: "^_",
+            caughtErrorsIgnorePattern: "^_",
+        }],
+    },
+}];

package.json

@@ -53,6 +53,8 @@
     ]
   },
   "devDependencies": {
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.9.0",
     "@jest/types": "^30.0.0-alpha.6",
     "@swc/core": "^1.7.11",
     "@swc/jest": "^0.2.36",
@@ -62,6 +64,7 @@
     "@typescript-eslint/eslint-plugin": "^8.1.0",
     "@typescript-eslint/parser": "^8.1.0",
     "eslint": "^9.9.0",
+    "globals": "^15.9.0",
     "jest": "^30.0.0-alpha.5",
     "prettier": "^3.3.3",
     "rimraf": "^6.0.1",