diff --git a/configs/js/src/index.d.ts b/configs/js/src/index.d.ts
index 309442a..6482724 100644
--- a/configs/js/src/index.d.ts
+++ b/configs/js/src/index.d.ts
@@ -1,2 +1,22 @@
+/**
+ * @file
+ * Types entrypoint of the package.
+ * @license MIT
+ * @author Guz013 <contact.guz013@gmail.com> (https://guz.one)
+ */
+
+import type { Linter } from 'eslint';
+
 export { default as presets } from './presets/index.d.ts';
 export { default as configs } from './configs/index.d.ts';
+
+/**
+ * Helper function to provide type-checking when defining
+ * ESLint's configuration.
+ *
+ * @param config - The configuration array to be returned.
+ * @returns The configuration array passed on the first parameter.
+ */
+export function defineConfig(
+	config: Linter.FlatConfig[],
+): Linter.FlatConfig[];
diff --git a/configs/js/src/index.js b/configs/js/src/index.js
index 1231562..0c94145 100644
--- a/configs/js/src/index.js
+++ b/configs/js/src/index.js
@@ -1,2 +1,27 @@
-export { default as presets } from './presets/index.js';
+/**
+ * @file
+ * Main file entrypoint of the package.
+ * @license MIT
+ * @author Guz013 <contact.guz013@gmail.com> (https://guz.one)
+ */
+
+import presets from './presets/index.js';
+import configs from './configs/index.js';
+
+/**
+ * Helper function to provide type-checking when defining
+ * ESLint's configuration.
+ *
+ * @param {import('eslint').Linter.FlatConfig[]} config
+ * - The configuration array to be returned.
+ * @returns {import('eslint').Linter.FlatConfig[]}
+ */
+function defineConfig(config) {
+	return config;
+}
+
+const eslegant = { configs, presets };
+
+export {  defineConfig, eslegant as default  };
 export { default as configs } from './configs/index.js';
+export { default as presets } from './presets/index.js';
diff --git a/eslint.config.js b/eslint.config.js
index 0f87f6a..a69c70f 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -1,5 +1,16 @@
-import { presets } from '@eslegant/js';
+import { configs, defineConfig, presets } from '@eslegant/js';
 
-export default [
+export default defineConfig([
 	...presets.strict,
-];
+	configs.environments.node.strict.error,
+	{
+		...configs.documentation.strict.error,
+		files: ['configs/**/*.js', 'configs/**/*.ts'],
+	},
+	{
+		files: ['**/*.{js,ts,cjs,tjs,mjs,mts,jsx,tsx}'],
+		rules: {
+			'jsdoc/check-values': ['error', { allowedLicenses: ['MIT'] }],
+		},
+	},
+]);
diff --git a/tsconfig.json b/tsconfig.json
index e8b28d3..54a0062 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,6 +13,6 @@
 		"alwaysStrict": true,
 		"outDir": "./dir"
 	},
-	"include": ["eslint.config.js", "commitlint.config.cjs"],
+	"include": ["./eslint.config.js", "./commitlint.config.cjs"],
 	"exclude": ["./node_modules/**", "./dist/**"]
 }