Migrate ESLint to the latest config style (#72)

Author: oprypin

eslint.config.js

@@ -1,94 +1,103 @@
-import {FlatCompat} from "@eslint/eslintrc";
-import js from "@eslint/js";
-
-const config = {
-    "env": {
-        "commonjs": true,
-        "es6": true,
-        "node": true,
-    },
-    "ignorePatterns": ["docs/", "site/"],
-    "extends": "eslint:recommended",
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly",
-    },
-    "parserOptions": {
-        "ecmaVersion": 2020,
-        "sourceType": "module",
-    },
-    "rules": {
-        "no-empty": ["error", {"allowEmptyCatch": true}],
-        "no-unused-vars": ["error", {"caughtErrors": "none"}],
-        "prefer-const": "error",
+import {defineConfig, globalIgnores} from "eslint/config";
+import eslint from "@eslint/js";
+import globals from "globals";
+import stylistic from "@stylistic/eslint-plugin";
 
+export default defineConfig([
+    globalIgnores([
+        "docs/",
+        "site/",
+    ]),
+    stylistic.configs.customize({
+        indent: 4,
+        quotes: "double",
+        semi: true,
+        braceStyle: "1tbs",
+    }),
+    eslint.configs.recommended,
+    {languageOptions: {
+        sourceType: "module",
+        parserOptions: {
+            ecmaVersion: 2020,
+        },
+        globals: {
+            ...globals.node,
+        },
+    }},
+    {rules: {
+        "@stylistic/array-bracket-spacing": "error",
+        "@stylistic/arrow-parens": ["error", "always"],
+        "@stylistic/arrow-spacing": "error",
+        "@stylistic/brace-style": "error",
+        "@stylistic/comma-dangle": ["error", "always-multiline"],
+        "@stylistic/comma-spacing": "error",
+        "@stylistic/comma-style": "error",
+        "@stylistic/computed-property-spacing": "error",
+        "@stylistic/eol-last": "error",
+        "@stylistic/function-call-spacing": "error",
+        "@stylistic/generator-star-spacing": ["error", "after"],
+        "@stylistic/implicit-arrow-linebreak": "error",
+        "@stylistic/key-spacing": "error",
+        "@stylistic/keyword-spacing": "error",
+        "@stylistic/no-confusing-arrow": "error",
+        "@stylistic/no-extra-semi": "error",
+        "@stylistic/no-multi-spaces": ["error"],
+        "@stylistic/no-multiple-empty-lines": "error",
+        "@stylistic/no-trailing-spaces": "error",
+        "@stylistic/no-whitespace-before-property": "error",
+        "@stylistic/object-curly-spacing": ["error", "never"],
+        "@stylistic/padded-blocks": ["error", "never"],
+        "@stylistic/quote-props": "off",
+        "@stylistic/quotes": ["error", "double"],
+        "@stylistic/rest-spread-spacing": "error",
+        "@stylistic/semi": "error",
+        "@stylistic/semi-spacing": "error",
+        "@stylistic/semi-style": "error",
+        "@stylistic/space-before-function-paren": ["error", {anonymous: "always", named: "never", asyncArrow: "always"}],
+        "@stylistic/space-in-parens": ["error", "never"],
+        "@stylistic/space-infix-ops": "error",
+        "@stylistic/space-unary-ops": "error",
+        "@stylistic/spaced-comment": ["error", "always", {markers: ["/"]}],
+        "@stylistic/switch-colon-spacing": "error",
+        "@stylistic/template-curly-spacing": "error",
+        "@stylistic/template-tag-spacing": "error",
+        "@stylistic/type-annotation-spacing": "error",
+        "@stylistic/yield-star-spacing": "error",
+        "arrow-body-style": ["error", "as-needed"],
         "block-scoped-var": "error",
+        "camelcase": "error",
         "consistent-return": "error",
-        "curly": "error",
-        "eqeqeq": "error",
+        "curly": ["error", "all"],
+        "eqeqeq": ["error", "always", {"null": "ignore"}],
+        "func-style": ["error", "declaration"],
+        "max-len": ["error", {code: 120, ignoreStrings: true, ignoreTemplateLiterals: true}],
+        "no-cond-assign": ["error", "except-parens"],
+        "no-duplicate-imports": "error",
+        "no-empty": ["error", {allowEmptyCatch: true}],
         "no-floating-decimal": "error",
         "no-implicit-globals": "error",
         "no-implied-eval": "error",
-        "no-multi-spaces": "error",
+        "no-mixed-operators": "error",
         "no-multi-str": "error",
         "no-return-assign": "error",
         "no-return-await": "error",
         "no-self-compare": "error",
         "no-sequences": "error",
-        "no-useless-return": "error",
-        "yoda": "error",
-
-        "brace-style": "error",
-        "camelcase": "error",
-        "comma-dangle": ["error", "always-multiline"],
-        "comma-spacing": "error",
-        "comma-style": "error",
-        "computed-property-spacing": "error",
-        "eol-last": "error",
-        "func-call-spacing": "error",
-        "implicit-arrow-linebreak": "error",
-        "indent": "error",
-        "key-spacing": "error",
-        "keyword-spacing": "error",
-        "max-len": ["error", {"code": 100, "ignoreStrings": true, "ignoreTemplateLiterals": true}],
-        "no-mixed-operators": "error",
-        "no-multiple-empty-lines": "error",
-        "no-trailing-spaces": "error",
         "no-unneeded-ternary": "error",
-        "no-whitespace-before-property": "error",
-        "object-curly-spacing": ["error", "never"],
-        "operator-assignment": "error",
-        "padded-blocks": ["error", "never"],
-        "quotes": "error",
-        "semi": "error",
-        "semi-spacing": "error",
-        "semi-style": "error",
-        "space-before-function-paren": ["error", {
-            "anonymous": "always", "named": "never", "asyncArrow": "always",
-        }],
-        "space-infix-ops": "error",
-        "space-unary-ops": "error",
-        "spaced-comment": "error",
-        "switch-colon-spacing": "error",
-        "template-tag-spacing": "error",
-        "unicode-bom": "error",
-
-        "arrow-body-style": "error",
-        "arrow-parens": "error",
-        "arrow-spacing": "error",
-        "generator-star-spacing": ["error", "after"],
-        "no-duplicate-imports": "error",
+        "no-unused-vars": ["error", {"caughtErrors": "none"}],
+        "no-useless-return": "error",
         "no-var": "error",
+        "operator-assignment": "error",
+        "prefer-arrow-callback": "error",
+        "prefer-const": ["error", {"destructuring": "all"}],
         "prefer-destructuring": "error",
         "prefer-numeric-literals": "error",
         "prefer-rest-params": "error",
         "prefer-spread": "error",
-        "rest-spread-spacing": "error",
+        "require-await": "error",
         "sort-imports": "error",
-        "template-curly-spacing": "error",
-        "yield-star-spacing": "error",
-    },
-};
-
-const compat = new FlatCompat({recommendedConfig: js.configs.recommended});
-export default compat.config(config);
+        "sort-keys": ["error", "asc", {minKeys: 10}],
+        "unicode-bom": "error",
+        "yoda": "error",
+    }},
+]);