feat: Migrate project to ESLint v9

Author: willdurand

.eslintignore

@@ -5,8 +5,5 @@ module.exports = {
   diff: true,
   package: './package.json',
   reporter: 'spec',
-  require: [
-    '@babel/register',
-    './tests/setup.js',
-  ]
+  require: ['@babel/register', './tests/setup.js'],
 };

.eslintrc

@@ -14,4 +14,6 @@ LICENSE
 
 # allow files we want to process
 !*.js
+!*.cjs
+!*.mjs
 !*.md

.mocharc.cjs

@@ -1,11 +1,11 @@
 module.exports = {
-  "extends": ["@commitlint/config-conventional"],
-  "rules": {
-    "body-leading-blank": [0, "never"],
-    "footer-leading-blank": [0, "never"],
-    "header-max-length": [1, "always", 72],
-    "subject-case": [0, "never"],
-    "subject-full-stop": [0, "never"],
-    "body-max-line-length": [0, "never"]
-  }
-}
+  extends: ['@commitlint/config-conventional'],
+  rules: {
+    'body-leading-blank': [0, 'never'],
+    'footer-leading-blank': [0, 'never'],
+    'header-max-length': [1, 'always', 72],
+    'subject-case': [0, 'never'],
+    'subject-full-stop': [0, 'never'],
+    'body-max-line-length': [0, 'never'],
+  },
+};