diff --git a/.eslintrc.js b/.eslintrc.js
index 65d6a289..1d0efec0 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -13,6 +13,17 @@ module.exports = {
   },
   ignorePatterns: [ "test-packages/**" ],
   rules: {
+    "node/no-unpublished-import": "off",
     "node/no-unpublished-require": "off",
+    "node/no-unsupported-features/es-syntax": "off",
   },
+  overrides: [
+    {
+      files: [ "examples/flat-config/**/*" ],
+      parserOptions: {
+        sourceType: "module",
+        project: "./examples/flat-config/tsconfig.json",
+      },
+    },
+  ],
 };
diff --git a/README.md b/README.md
index bb7cdbb3..7566e81d 100644
--- a/README.md
+++ b/README.md
@@ -16,12 +16,6 @@ An ESLint plugin to enforce EditorConfig rules
 $ npm install --save-dev eslint@8 eslint-plugin-editorconfig
 ```
 
-or
-
-```bash
-$ yarn add --dev eslint@8 eslint-plugin-editorconfig
-```
-
 If you use [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint), you need to install `@typescript-eslint/eslint-plugin` too.
 
 ```bash
@@ -78,11 +72,7 @@ It is recommended to disable them.
 - `linebreak-style`
 - `no-trailing-spaces`
 - `unicode-bom`
-- `@typescript-eslint/eol-last`
 - `@typescript-eslint/indent`
-- `@typescript-eslint/linebreak-style`
-- `@typescript-eslint/no-trailing-spaces`
-- `@typescript-eslint/unicode-bom`
 
 If above rules are specified in your .eslintrc, just remove them.
 If they are specified in the extended config, consider adding `plugin:editorconfig/noconflict` to your `extends`.
diff --git a/examples/flat-config/eslint.config.js b/examples/flat-config/eslint.config.js
index 6738b945..7e6e5795 100644
--- a/examples/flat-config/eslint.config.js
+++ b/examples/flat-config/eslint.config.js
@@ -16,6 +16,6 @@ export default [
     plugins: [ "editorconfig" ],
   }).map(config => ({
     ...config,
-    ignores: [ join(__dirname, "src/invalid.ts") ]
+    ignores: [ join(__dirname, "src/invalid.ts") ],
   })),
 ];
diff --git a/examples/flat-config/package.json b/examples/flat-config/package.json
index b62109c4..a596e692 100644
--- a/examples/flat-config/package.json
+++ b/examples/flat-config/package.json
@@ -7,10 +7,14 @@
   "scripts": {
     "lint": "eslint ."
   },
+  "dependencies": {
+    "undici": "^6.2.1"
+  },
   "devDependencies": {
+    "@eslint/eslintrc": "^3.1.0",
+    "@phanect/configs": "latest",
     "@types/node": "^20.10.6",
     "eslint": "^8.56.0",
-    "eslint-plugin-editorconfig": "^4.0.3",
-    "undici": "^6.2.1"
+    "eslint-plugin-editorconfig": "^4.0.3"
   }
 }
diff --git a/examples/flat-config/src/invalid.ts b/examples/flat-config/src/invalid.ts
index f8ced376..bc8f3a6b 100644
--- a/examples/flat-config/src/invalid.ts
+++ b/examples/flat-config/src/invalid.ts
@@ -3,6 +3,7 @@ import { fetch } from "undici";
 const res = await fetch("https://example.com");
 
 try {
+  // eslint-disable-next-line editorconfig/indent
     const data = await res.json(); // This line should be warned by this plugin
   console.log(data);
 } catch (err) {
diff --git a/examples/flat-config/tsconfig.json b/examples/flat-config/tsconfig.json
new file mode 100644
index 00000000..6837c24c
--- /dev/null
+++ b/examples/flat-config/tsconfig.json
@@ -0,0 +1,4 @@
+{
+  "extends": "@phanect/configs/tsconfig/nodejs",
+  "include": [ "**/*.ts" ]
+}
diff --git a/lib/base.js b/lib/base.js
index 14e89cb6..cdc676a4 100644
--- a/lib/base.js
+++ b/lib/base.js
@@ -25,16 +25,15 @@ module.exports.buildRule = ({ baseRuleName, description, omitFirstOption, getESL
     },
 
     create: function(context) {
-      const filename = context.getFilename();
-      const ecParams = editorconfig.parseSync(context.getFilename(filename));
+      const ecParams = editorconfig.parseSync(context.filename);
       const { enabled, eslintOption } = getESLintOption(ecParams);
 
       let baseRule;
 
-      if (filename.endsWith(".ts")) {
+      if (context.filename.endsWith(".ts")) {
         try {
           const { rules } = require("@typescript-eslint/eslint-plugin");
-          baseRule = rules[baseRuleName] ? klona(rules[baseRuleName]) : jsBaseRule;
+          baseRule = rules?.[baseRuleName] ? klona(rules[baseRuleName]) : jsBaseRule;
         } catch (err) {
           if (err.code === "MODULE_NOT_FOUND") {
             throw new Error("eslint-plugin-editorconfig requires typescript and @typescript-eslint/eslint-plugin to lint *.ts files. Run `npm install typescript @typescript-eslint/eslint-plugin`.");
diff --git a/main.js b/main.js
index 44b0eef4..10d4629c 100644
--- a/main.js
+++ b/main.js
@@ -16,11 +16,7 @@ module.exports = {
         "linebreak-style": "off",
         "no-trailing-spaces": "off",
         "unicode-bom": "off",
-        "@typescript-eslint/eol-last": "off",
         "@typescript-eslint/indent": "off",
-        "@typescript-eslint/linebreak-style": "off",
-        "@typescript-eslint/no-trailing-spaces": "off",
-        "@typescript-eslint/unicode-bom": "off",
       },
     },
     all: {
@@ -30,11 +26,7 @@ module.exports = {
         "linebreak-style": "off",
         "no-trailing-spaces": "off",
         "unicode-bom": "off",
-        "@typescript-eslint/eol-last": "off",
         "@typescript-eslint/indent": "off",
-        "@typescript-eslint/linebreak-style": "off",
-        "@typescript-eslint/no-trailing-spaces": "off",
-        "@typescript-eslint/unicode-bom": "off",
 
         "editorconfig/charset": "error",
         "editorconfig/eol-last": "error",
diff --git a/package.json b/package.json
index 4c2d052f..a5dec437 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,9 @@
     "url": "https://github.com/phanect/eslint-plugin-editorconfig/issues"
   },
   "homepage": "https://github.com/phanect/eslint-plugin-editorconfig",
+  "workspaces": [
+    "examples/*"
+  ],
   "dependencies": {
     "editorconfig": "^1.0.2",
     "eslint": "^8.40.0",
diff --git a/test-packages/success/base-rules-conflict/.editorconfig b/test-packages/success/base-rules-conflict/.editorconfig
new file mode 100644
index 00000000..8c52ff93
--- /dev/null
+++ b/test-packages/success/base-rules-conflict/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/test-packages/success/js/.editorconfig b/test-packages/success/js/.editorconfig
new file mode 100644
index 00000000..8c52ff93
--- /dev/null
+++ b/test-packages/success/js/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/test-packages/success/ts/.editorconfig b/test-packages/success/ts/.editorconfig
new file mode 100644
index 00000000..8c52ff93
--- /dev/null
+++ b/test-packages/success/ts/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/tests/lib/rules/editorconfig-ts.js b/tests/lib/rules/editorconfig-ts.js
index c6e38d23..9069f4fb 100644
--- a/tests/lib/rules/editorconfig-ts.js
+++ b/tests/lib/rules/editorconfig-ts.js
@@ -1,17 +1,8 @@
 "use strict";
 
-// -----------------------------------------------------------------------------
-// Requirements
-// -----------------------------------------------------------------------------
-
 const path = require("path");
 const RuleTester = require("eslint").RuleTester;
 
-
-// -----------------------------------------------------------------------------
-// Tests
-// -----------------------------------------------------------------------------
-
 const ruleTester = new RuleTester({
   parser: require.resolve("@typescript-eslint/parser"),
   parserOptions: {
diff --git a/tests/lib/rules/editorconfig.js b/tests/lib/rules/editorconfig.js
index 537244a7..49505d13 100644
--- a/tests/lib/rules/editorconfig.js
+++ b/tests/lib/rules/editorconfig.js
@@ -1,17 +1,8 @@
 "use strict";
 
-// -----------------------------------------------------------------------------
-// Requirements
-// -----------------------------------------------------------------------------
-
 const path = require("path");
 const RuleTester = require("eslint").RuleTester;
 
-
-// -----------------------------------------------------------------------------
-// Tests
-// -----------------------------------------------------------------------------
-
 const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 2019 }});
 
 const commonValidTests = [