chore: switch .eslintrc to flat config (#128)

eslint.config.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const jsPlugin = require('@eslint/js');
+const prettierConfig = require('eslint-config-prettier');
+const eslintPluginRecommendedConfig = require('eslint-plugin-eslint-plugin/configs/recommended');
+
+const eslintPluginConfigs = [
+  eslintPluginRecommendedConfig,
+  {
+    rules: {
+      'eslint-plugin/prefer-message-ids': 'off', // TODO: enable
+      'eslint-plugin/require-meta-docs-description': ['error', { pattern: '^(Detects|Enforces|Requires|Disallows) .+\\.$' }],
+      'eslint-plugin/require-meta-docs-url': [
+        'error',
+        {
+          pattern: 'https://github.com/eslint-community/eslint-plugin-security/blob/main/docs/rules/{{name}}.md',
+        },
+      ],
+      'eslint-plugin/require-meta-schema': 'off', // TODO: enable
+      'eslint-plugin/require-meta-type': 'off', // TODO: enable
+    },
+  },
+];
+
+module.exports = [
+  jsPlugin.configs.recommended,
+  prettierConfig,
+  ...eslintPluginConfigs,
+  {
+    languageOptions: {
+      sourceType: 'commonjs',
+    },
+  },
+  {
+    files: ['test/**/*.js'],
+    languageOptions: {
+      globals: {
+        describe: 'readonly',
+        it: 'readonly',
+      },
+    },
+  },
+];