Feature/support eslint 8

.editorconfig

@@ -0,0 +1,14 @@
+# Editor configuration, see http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false

.eslintrc.js

@@ -0,0 +1,11 @@
+module.exports = {
+  env: {
+    node: true,
+    es2021: true,
+  },
+  extends: ["eslint:recommended", "plugin:prettier/recommended"],
+  parserOptions: {
+    ecmaVersion: "latest",
+    sourceType: "commonjs",
+  },
+};

index.js

@@ -1,17 +1,17 @@
-'use strict';
+"use strict";
 
 module.exports = {
-	rules: {
-		'no-ignore-file': require('./rules/no-ignore-file'),
-		'prefer-ignore-reason': require('./rules/prefer-ignore-reason')
-	},
-	configs: {
-		recommended: {
-			plugins: ['istanbul'],
-			rules: {
-				'istanbul/no-ignore-file': 'off',
-				'istanbul/prefer-ignore-reason': 'error'
-			}
-		}
-	}
+  rules: {
+    "no-ignore-file": require("./rules/no-ignore-file"),
+    "prefer-ignore-reason": require("./rules/prefer-ignore-reason"),
+  },
+  configs: {
+    recommended: {
+      plugins: ["istanbul"],
+      rules: {
+        "istanbul/no-ignore-file": "off",
+        "istanbul/prefer-ignore-reason": "error",
+      },
+    },
+  },
 };