Why

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
         run: npm install eslint@9
         
       - name: Install ESLint Configs and Plugins
-        run: npm install @eslint/js@9 eslint-config-amber eslint-plugin-jsonc
+        run: npm install @eslint/js@9 globals eslint-config-amber eslint-plugin-jsonc
 
       - name: Run ESLint
         run: npm test

eslint.config.js

@@ -1,12 +1,16 @@
 const { default: eslintPluginJsonc } = require('eslint-plugin-jsonc');
 const js = require('@eslint/js');
 const amber = require('eslint-config-amber');
+const globals = require('globals');
 
 module.exports = [
 	...eslintPluginJsonc.configs['flat/recommended-with-json'],
 	{
 		files: ['**/*.js'],
-		languageOptions: { sourceType: 'commonjs' },
+		languageOptions: {
+			sourceType: 'commonjs',
+			globals: { ...globals.node }
+		},
 		rules: {
 			...js.configs.recommended.rules,
 			...amber.rules

package.json

@@ -97,6 +97,7 @@
 		"@eslint/js": "^9.0.0",
 		"eslint": "^9.0.0",
 		"eslint-config-amber": "^2.0.4",
-		"eslint-plugin-jsonc": "^2.15.0"
+		"eslint-plugin-jsonc": "^2.15.0",
+		"globals": "^15.0.0"
 	}
 }