diff --git a/.vscode/settings.json b/.vscode/settings.json
index 14b4db7..ead1e7b 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -23,6 +23,11 @@
 		"yaml"
 	],
 	"cSpell.words": [
-		"eslegant"
+		"eslegant",
+		"estree",
+		"nanospinner",
+		"picocolors",
+		"picomatch",
+		"sisteransi"
 	]
 }
diff --git a/configs/js/src/configs/formatting.js b/configs/js/src/configs/formatting.js
index ebfe16a..946f872 100644
--- a/configs/js/src/configs/formatting.js
+++ b/configs/js/src/configs/formatting.js
@@ -24,7 +24,7 @@ const recommended = createVariations({
 		'arrow-parens': ['error', 'as-needed', { requireForBlockBody: true }],
 		'comma-style': 'error',
 		'curly': ['error', 'multi-or-nest', 'consistent'],
-		'dot-location': 'error',
+		'dot-location': ['error', 'property'],
 		'eol-last': 'error',
 		'generator-star-spacing': ['error', 'before'],
 		'no-mixed-spaces-and-tabs': 'error',
diff --git a/configs/js/src/configs/naming.js b/configs/js/src/configs/naming.js
index 0062f97..b32adf9 100644
--- a/configs/js/src/configs/naming.js
+++ b/configs/js/src/configs/naming.js
@@ -16,7 +16,10 @@ const recommended = createVariations({
 	rules: {
 		...{}, // Plugin: eslint-plugin-unicorn
 		'unicorn/filename-case': ['error', { case: 'kebabCase' }],
-		'unicorn/prevent-abbreviations': 'error',
+		/*
+		 * TODO [>=1.0.0]: This will be replaced by a better naming convention.
+		 * 'unicorn/prevent-abbreviations': 'error',
+		 */
 	},
 });
 
diff --git a/configs/js/src/configs/suggestions.js b/configs/js/src/configs/suggestions.js
index 3cbe94d..29fd152 100644
--- a/configs/js/src/configs/suggestions.js
+++ b/configs/js/src/configs/suggestions.js
@@ -15,7 +15,12 @@ const recommended = createVariations({
 	files: FILES,
 	rules: {
 		'camelcase': 'error',
-		'max-len': ['error', { code: 80, comments: 100, ignoreUrls: true }],
+		'max-len': ['error', {
+			code: 80,
+			comments: 100,
+			ignoreTemplateLiterals: true,
+			ignoreUrls: true,
+		}],
 		'no-case-declarations': 'error',
 		'no-confusing-arrow': 'error',
 		'no-console': 'error',
@@ -287,7 +292,7 @@ const strict = createVariations({
 		}],
 		'max-nested-callbacks': ['error', 10],
 		'max-params': ['error', 4],
-		'max-statements': ['error', 10],
+		'max-statements': ['error', 15],
 		'multiline-comment-style': ['error', 'starred-block'],
 		'new-cap': 'error',
 		'new-parens': 'error',
@@ -303,11 +308,8 @@ const strict = createVariations({
 		'no-extend-native': 'error',
 		'no-extra-bind': 'error',
 		'no-extra-boolean-cast': 'error',
-		'no-extra-parens': ['error', 'all', {
-			enforceForArrowConditionals: false,
-			nestedBinaryExpressions: false,
-			ternaryOperandBinaryExpressions: false,
-		}],
+		// TODO [>=1.0.0]: Fix no-extra-parens conflict with the unicorn/no-nested-ternary rule.
+		'no-extra-parens': ['error', 'functions'],
 		'no-floating-decimal': 'error',
 		'no-implicit-coercion': 'error',
 		'no-implied-eval': 'error',
diff --git a/configs/js/src/index.js b/configs/js/src/index.js
index 0c94145..9633b9a 100644
--- a/configs/js/src/index.js
+++ b/configs/js/src/index.js
@@ -22,6 +22,6 @@ function defineConfig(config) {
 
 const eslegant = { configs, presets };
 
-export {  defineConfig, eslegant as default  };
+export { defineConfig, eslegant as default };
 export { default as configs } from './configs/index.js';
 export { default as presets } from './presets/index.js';
diff --git a/configs/js/src/lib/rule-variations.js b/configs/js/src/lib/rule-variations.js
index 47822e2..e5e199e 100644
--- a/configs/js/src/lib/rule-variations.js
+++ b/configs/js/src/lib/rule-variations.js
@@ -27,6 +27,7 @@ function changeLevel(ruleEntry, level) {
 	if (typeof level === 'number') {
 		/** @type {RuleLevel[]} */
 		const levels = ['error', 'off', 'warn'];
+		// eslint-disable-next-line security/detect-object-injection
 		level = levels[level];
 	}
 
@@ -34,7 +35,6 @@ function changeLevel(ruleEntry, level) {
 		return [level, ruleEntry[1]];
 
 	return level;
-
 }
 
 /**
diff --git a/packages/cli/index.d.ts b/packages/cli/index.d.ts
index be33e9f..041ee02 100644
--- a/packages/cli/index.d.ts
+++ b/packages/cli/index.d.ts
@@ -1,17 +1,17 @@
-import type { CliArgs  } from './src/types';
+import type { CliArgs } from './src/types';
 
 /**
- * Class that handles the creation and running the ESLegant command line interface
+ * Class that handles the creation and running the ESLegant command line interface.
  */
 export default class Cli {
 	/**
-	 * @param args Arguments to pass to the cli when its runs
+	 * @param args - Arguments to pass to the cli when its runs.
 	 */
-	constructor(args: CliArgs);
+	public constructor(args: CliArgs);
 	/**
-	 * Runs the cli with the given arguments
+	 * Runs the cli with the given arguments.
 	 */
-	async run(): Promise<void>;
+	public async run(): Promise<void>;
 }
 
 export type { CliArgs, Config } from './src/types.d.ts';
diff --git a/packages/cli/index.js b/packages/cli/index.js
index 16c6c35..53e0fc3 100644
--- a/packages/cli/index.js
+++ b/packages/cli/index.js
@@ -1 +1 @@
-export { default as default } from './src/cli.js';
+export { default } from './src/cli.js';
diff --git a/packages/cli/src/cli.js b/packages/cli/src/cli.js
index 57cd6fe..0c4eef8 100644
--- a/packages/cli/src/cli.js
+++ b/packages/cli/src/cli.js
@@ -1,31 +1,35 @@
-import { Command } from 'commander';
-import ConfigsProcessor from './configsProcessor.js';
-import Workspace from './workspace.js';
-import c from 'picocolors';
+/* eslint-disable no-console */
+/* eslint-disable import/max-dependencies */
+import process from 'node:process';
 import path from 'node:path';
+
 import { createSpinner } from 'nanospinner';
-import count from './lib/count.js';
-import prompts from 'prompts';
-import ConfigsFile from './configsFile.js';
-import cardinal from 'cardinal';
+import { Command } from 'commander';
 import { erase } from 'sisteransi';
-import PackageInstaller from './packageInstaller.js';
-import notNull from './lib/notNull.js';
+import cardinal from 'cardinal';
+import prompts from 'prompts';
+import c from 'picocolors';
+
+import PackageInstaller from './package-installer.js';
+import ConfigsProcessor from './configs-processor.js';
+import ConfigsFile from './configs-file.js';
+import notNull from './lib/not-null.js';
+import Workspace from './workspace.js';
+import count from './lib/count.js';
 
 const stdout = process.stdout;
 
 export default class Cli {
-
 	#program = new Command();
 
 	/** @type {import('./types').CliArgs} */
 	args = {
-		dir: process.cwd(),
 		configs: [],
+		dir: process.cwd(),
 	};
 
 	/**
-	 * @param {import('./types').CliArgs} [args] Cli arguments object
+	 * @param {import('./types').CliArgs} [args] - Cli arguments object.
 	 */
 	constructor(args) {
 		this.#program
@@ -42,118 +46,148 @@ export default class Cli {
 			...args,
 		};
 
-		this.args.dir = !this.args.dir.startsWith('/')
-			? path.join(process.cwd(), this.args.dir)
-			: this.args.dir;
+		this.args.dir = this.args.dir.startsWith('/')
+			? this.args.dir
+			: path.join(process.cwd(), this.args.dir);
 	}
 
+	// eslint-disable-next-line max-lines-per-function, max-statements, complexity
 	async run() {
-
 		process.chdir(this.args.dir);
 
 		const configs = this.args.configs;
 		const spinner = createSpinner('Detecting workspace configuration');
 
 		const processor = new ConfigsProcessor({ configs });
-		const workspace = new Workspace(this.args.dir, this.args?.packages);
+		const workspace = new Workspace(this.args.dir, this.args.packages);
 
-		let packages = (await workspace.getPackages())
-			.map(pkg => {
-				spinner.update({ text: `Detecting configuration for package ${c.bold(c.blue(pkg.name))}` });
-
-				pkg.config = processor.detectConfig(pkg);
-
-				return pkg;
+		let packages = await workspace.getPackages();
+		packages = packages.map((pkg) => {
+			spinner.update({
+				text: `Detecting configuration for package ${c.bold(c.blue(pkg.name))}`,
 			});
 
+			pkg.config = processor.detectConfig(pkg);
+
+			return pkg;
+		});
+
 		spinner.success({
 			text:
-				'Detecting workspace configuration ' +
-				c.dim(`${count.packagesWithConfigs(packages)} configs founded\n`),
+				`Detecting workspace configuration ${
+				c.dim(`${count.packagesWithConfigs(packages)} configs founded\n`)}`,
 		});
 
-		const merge = this.args.mergeToRoot !== undefined ? this.args.mergeToRoot : packages.length > 1 ?
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+		const merge = this.args.mergeToRoot ?? (packages.length > 1
 		/** @type {{merge: boolean}} */
-				(await prompts({
-					name: 'merge',
-					message:
-					`Would you like to merge all configuration files into one root ${c.blue('eslint.config.js?')}` +
-					c.italic(c.dim('\nAll configurations will be applied to the entire workspace and packages')),
+			? (await prompts({
 					initial: true,
+					message:
+					`Would you like to merge all configuration files into one root ${c.blue('eslint.config.js?')}${
+					c.italic(c.dim('\nAll configurations will be applied to the entire workspace and packages'))}`,
+					name: 'merge',
 					type: 'confirm',
-				})).merge : true;
+				// eslint-disable-next-line unicorn/no-await-expression-member
+				})).merge : true);
 
 		console.log(c.dim('\nPlease select which options you prefer\n'));
 
 		packages = await processor.questionConfig(
-			merge ? workspace.mergePackages(packages) : packages,
-			configs.filter(c => c.manual),
+			merge ? Workspace.mergePackages(packages) : packages,
+			configs.filter(config => config.manual),
 		);
 
-		const fileHandler = new ConfigsFile(configs, packages.find(c => c.root)?.path);
+		const fileHandler = new ConfigsFile(
+			configs,
+			packages.find(config => config.root)?.path,
+		);
 
 		for (const pkg of packages) {
-
 			pkg.configFile = fileHandler.generateObj(pkg);
-			pkg.configFile.content = await fileHandler.generate(pkg.configFile);
+			// eslint-disable-next-line no-await-in-loop
+			pkg.configFile.content = await ConfigsFile.generate(pkg.configFile);
 
 			/** @type {boolean} */
 			const shouldWrite =
 				/** @type {{write: boolean}} */
+				// eslint-disable-next-line no-await-in-loop
 				(await prompts({
-					type: 'confirm',
-					name: 'write',
+					initial: true,
 					message: `Do you want to write this config file for ${pkg.root
 						? c.blue('the root directory')
 						: c.blue(pkg.name)
 						}?\n\n${cardinal.highlight(pkg.configFile.content)}`,
-					initial: true,
+					name: 'write',
+					type: 'confirm',
+				// eslint-disable-next-line unicorn/no-await-expression-member
 				})).write;
 
-			stdout.write(erase.lines(pkg.configFile.content.split('\n').length + 2));
-
-			if (shouldWrite) await fileHandler.write(pkg.configFile.path, pkg.configFile.content);
+			stdout.write(
+				erase.lines(pkg.configFile.content.split('\n').length + 2),
+			);
 
+			if (shouldWrite) {
+				// eslint-disable-next-line no-await-in-loop
+				await ConfigsFile.write(
+					pkg.configFile.path,
+					pkg.configFile.content,
+				);
+			}
 		}
 
-		const packagesMap = new Map(packages.map(p => [p.path, [...notNull(p.configFile).imports.keys()]]));
-		const installer = new PackageInstaller(packagesMap, packages.find(p => p.root === true)?.path ?? this.args.dir);
+		const packagesMap = new Map(packages.map(p =>
+			[p.path, [...notNull(p.configFile).imports.keys()]],
+		));
+		const installer = new PackageInstaller(
+			packagesMap,
+			packages.find(p => p.root === true)?.path ?? this.args.dir,
+		);
 
 		/** @type {boolean | 'changePackage'} */
-		let installPkgs = this.args.installPkgs !== undefined ? true :
-		/** @type {{install: boolean | 'changePackage'}} */
-				(await prompts({
-					name: 'install',
-					message:
-					`Would you like to ESLit to install the npm packages with ${c.green(installer.packageManager.name)}?\n${c.reset(c.dim(`  Packages to install: ${[...new Set([...packagesMap.values()])].join(' ')}\n`))}`,
-					choices: [
-						{ title: 'Yes, install all packages', value: true, description: installer.packageManager.description },
-						{ title: 'No, I will install them manually', value: false },
-						{ title: 'Change package manager', value: 'changePackage' },
-					],
-					type: 'select',
-				})).install;
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+		let installPkgs = this.args.installPkgs ?? (await prompts({
+			choices: [
+				{
+					description: installer.packageManager.description,
+					title: 'Yes, install all packages',
+					value: true,
+				},
+				{ title: 'No, I will install them manually', value: false },
+				{ title: 'Change package manager', value: 'changePackage' },
+			],
+			message:
+					`Would you like to ESLit to install the npm packages with ${c.green(installer.packageManager.name)}?\n${c.reset(c.dim(`  Packages to install: ${[...new Set(packagesMap.values())].join(' ')}\n`))}`,
+			name: 'install',
+			type: 'select',
+		// eslint-disable-next-line unicorn/no-await-expression-member
+		})).install;
 
 		if (installPkgs === 'changePackage') {
 			/** @type {{manager: import('./types').PackageManagerName}} */
 			const prompt = await prompts({
-				name: 'manager',
+				choices: Object.values(installer.packageManagers).map(m => ({
+					description: m.description,
+					title: m.name,
+					value: m.name,
+				})),
 				message: 'What package manager do you want ESLit to use?',
-				choices: Object.values(installer.packageManagers).map(m => {
-					return { title: m.name, description: m.description, value: m.name };
-				}),
+				name: 'manager',
 				type: 'select',
 			});
-			installer.packageManager = installer.packageManagers[prompt.manager];
+			installer.packageManager =
+				installer.packageManagers[prompt.manager];
 
-			if (!installer.packageManager) throw console.log(c.red('You must select a package manager'));
+			// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+			if (!installer.packageManager)
+				// eslint-disable-next-line max-len
+				// eslint-disable-next-line @typescript-eslint/no-throw-literal, @typescript-eslint/no-confusing-void-expression
+				throw console.log(c.red('You must select a package manager'));
 
 			installPkgs = true;
 		}
 
 		if (installPkgs) await installer.install();
-
 	}
-
 }
 
diff --git a/packages/cli/src/configsFile.js b/packages/cli/src/configs-file.js
similarity index 50%
rename from packages/cli/src/configsFile.js
rename to packages/cli/src/configs-file.js
index 1d22cf0..0af5ba7 100644
--- a/packages/cli/src/configsFile.js
+++ b/packages/cli/src/configs-file.js
@@ -1,19 +1,26 @@
-import path from 'node:path';
-import notNull from './lib/notNull.js';
-import { parse, prettyPrint } from 'recast';
-import fs from 'node:fs/promises';
 import { existsSync } from 'node:fs';
-import astUtils from './lib/astUtils.js';
+import process from 'node:process';
+import fs from 'node:fs/promises';
+import { join } from 'node:path';
+
+import { parse, prettyPrint } from 'recast';
+
+import astUtils from './lib/ast-utils.js';
+import notNull from './lib/not-null.js';
 
 /**
- * @param {import('./types').ConfigFile['imports']} map1 - The map to has it values merged from map2
- * @param {import('./types').ConfigFile['imports']} map2 - The map to has it values merged to map1
- * @returns {import('./types').ConfigFile['imports']} The resulting map
+ * @param {import('./types.js').ConfigFile['imports']} map1 -
+ * The map to has it values merged from map2.
+ * @param {import('./types.js').ConfigFile['imports']} map2 -
+ * The map to has it values merged to map1.
+ * @returns {import('./types.js').ConfigFile['imports']} The resulting map.
  */
+// eslint-disable-next-line max-statements
 function mergeImportsMaps(map1, map2) {
 	for (const [key, value] of map2) {
 		if (!map1.has(key)) {
 			map1.set(key, value);
+			// eslint-disable-next-line no-continue
 			continue;
 		}
 		const imports1 = notNull(map1.get(key));
@@ -23,33 +30,47 @@ function mergeImportsMaps(map1, map2) {
 		 * Because arrays and objects are always different independently from having equal values
 		 * ([] === [] -> false). It is converted to a string so the comparison can be made.
 		 */
-		switch ([typeof imports1 === 'string', typeof imports2 === 'string'].join(',')) {
-			case 'true,true':
-				if (imports1.toString() === imports2.toString())
+		switch ([
+			typeof imports1 === 'string',
+			typeof imports2 === 'string',
+		].join(',')) {
+			case 'true,true': {
+				if (imports1.toString() === imports2.toString()) {
 					map1.set(key, value);
-				else
-					map1.set(key, [['default', imports1.toString()], ['default', imports2.toString()]]);
+				}
+				else {
+					map1.set(key, [
+						['default', imports1.toString()],
+						['default', imports2.toString()],
+					]);
+				}
 				break;
-			case 'true,false':
+			}
+			case 'true,false': {
 				map1.set(key, [['default', imports1.toString()], ...imports2]);
 				break;
-			case 'false,true':
+			}
+			case 'false,true': {
 				map1.set(key, [['default', imports2.toString()], ...imports1]);
 				break;
-			case 'false,false':
+			}
+			case 'false,false': {
 				map1.set(key, [...imports1, ...imports2]);
 				break;
+			}
+			default:
+				// No nothing
 		}
 		if (typeof map1.get(key) !== 'string')
-			map1.set(key,  [...new Set(map1.get(key))]);
+			map1.set(key, [...new Set(map1.get(key))]);
 	}
 	return map1;
 }
 
 /**
- * @param {string} path1 The path to traverse from
- * @param {string} root The root path
- * @returns {string} The path to traverse
+ * @param {string} path1 - The path to traverse from.
+ * @param {string} root - The root path to be removed from the path1.
+ * @returns {string} The path to traverse.
  */
 function getPathDepth(path1, root) {
 	const pathDepth = path1.replace(root, '').split('/').slice(1);
@@ -58,13 +79,12 @@ function getPathDepth(path1, root) {
 }
 
 export default class ConfigsWriter {
-
 	/** @type {string} */
 	root = process.cwd();
 
 	/**
-	 * @param {import('./types').Config[]} configs The array of configs to construct from
-	 * @param {string} [root] The root directory path
+	 * @param {import('./types.js').Config[]} configs - The array of configs to construct from.
+	 * @param {string} [root] - The root directory path.
 	 */
 	constructor(configs, root) {
 		this.configs = configs;
@@ -72,93 +92,13 @@ export default class ConfigsWriter {
 	}
 
 	/**
-	 * @param {import('./types').Package} pkg The package to generate the config string from
-	 * @returns {import('./types').ConfigFile} The config file object
-	 */
-	generateObj(pkg) {
-		/** @type {import('./types').ConfigFile} */
-		const configObj = {
-			path: path.join(pkg.path, 'eslint.config.js'),
-			imports: new Map(),
-			configs: [],
-			presets: [],
-			rules: [],
-		};
-
-		if (!pkg.root) {
-			const rootConfig = path.join(getPathDepth(pkg.path, this.root), 'eslint.config.js');
-			configObj.imports.set(!rootConfig.startsWith('.') ? `./${rootConfig}` : rootConfig, 'root');
-			configObj.presets.push('root');
-		}
-
-		for (const [configName, optionsNames] of notNull(pkg.config)) {
-
-			const config = this.configs.find(c => c.name === configName);
-			if (!config) continue;
-
-			const options = config.options.filter(o => optionsNames.includes(o.name));
-			if (!options || options.length === 0) continue;
-
-			const imports = options.reduce((acc, opt) => {
-				const map1 = new Map(Object.entries(acc.packages ?? {}));
-				const map2 = new Map(Object.entries(opt.packages ?? {}));
-				acc.packages = Object.fromEntries(mergeImportsMaps(map1, map2));
-				return acc;
-			});
-
-			configObj.imports = mergeImportsMaps(configObj.imports, new Map(Object.entries(imports.packages ?? {})));
-
-			configObj.configs = [...new Set([
-				...configObj.configs,
-				...options.map(o => o.configs ?? []).flat(),
-			])];
-
-			configObj.rules = [...new Set([
-				...configObj.rules,
-				...options.map(o => o.rules ?? []).flat(),
-			])];
-
-			configObj.presets = [...new Set([
-				...configObj.presets,
-				...options.map(o => o.presets ?? []).flat(),
-			])];
-
-		}
-
-		return configObj;
-	}
-
-	/**
-	 * ! NOTE:
-	 * These functions declared bellow are notably hard to read and have lots of exceptions and
-	 * disabled eslint and typescript checks. Unfortunately this is something that I wasn't able to
-	 * prevent because a lot of the AST typescript types are somewhat wrong or simply hard to work
-	 * with them.
-	 *
-	 * But for somewhat help developing and prevent unwanted errors in the future, the types and eslint
-	 * errors are explicitly disabled and types are explicitly overridden. This is why there are so
-	 * many JSDoc type annotations and comments in general.
-	 *
-	 * Any help to make this code more readable and robust is appreciated
-	 */
-
-	/**
-	 * @typedef {import('estree').Program} Program
-	 * @typedef {(
-	 * 	import('./lib/astUtils.js').ExpressionOrIdentifier |
-	 * 	import('estree').ObjectExpression |
-	 * 	import('estree').SpreadElement
-	 * )} ConfigArrayElement
-	 */
-
-	/**
-	 * @param {Program} ast The program ast to be manipulated
-	 * @returns {Promise<Program>} The final ast with the recreated default export
+	 * @param {Program} ast - The program ast to be manipulated.
+	 * @returns {Promise<Program>} The final ast with the recreated default export.
 	 * @private
 	 */
-	async addDefaultExport(ast) {
-
+	static async addDefaultExport(ast) {
 		/** @type {{program: Program}} */
+		// eslint-disable-next-line max-len
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-unsafe-call
 		const { program: exportTemplateAst } = parse([
 			'/** @type {import(\'eslint\').Linter.FlatConfig[]} */',
@@ -168,78 +108,81 @@ export default class ConfigsWriter {
 		].join('\n'), { parser: (await import('recast/parsers/babel.js')) });
 		/** @type {import('estree').ExportDefaultDeclaration} */
 		// @ts-expect-error Node type needs to be ExportDefaultDeclaration to be founded
-		const exportTemplateNode = exportTemplateAst.body.find(n => n.type === 'ExportDefaultDeclaration');
+		const exportTemplateNode = exportTemplateAst.body
+			.find(n => n.type === 'ExportDefaultDeclaration');
 
 		/** @type {import('estree').ExportDefaultDeclaration | undefined} */
 		// @ts-expect-error Node type needs to be ExportDefaultDeclaration to be founded
-		let astExport = ast.body.find(n => n.type === 'ExportDefaultDeclaration');
+		const astExport = ast.body
+			.find(n => n.type === 'ExportDefaultDeclaration');
+
 		if (!astExport) { ast.body.push(exportTemplateNode); return ast; }
 
 		/** @type {import('estree').VariableDeclaration | undefined} */
-		const oldExportValue = astExport.declaration.type !== 'ArrayExpression'
-			// @ts-expect-error astExport.declaration is a expression
-			? astUtils.createVariable('oldConfig', 'const', astExport.declaration)
-			: undefined;
+		const oldExportValue = astExport.declaration.type === 'ArrayExpression'
+			? undefined
+			: astUtils.createVariable(
+				'oldConfig',
+				// @ts-expect-error astExport.declaration is a expression
+				astExport.declaration,
+				'const',
+			);
 
 		if (!oldExportValue) return ast;
 
 		// @ts-expect-error declaration is a ArrayExpression
+		// eslint-disable-next-line max-len
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-unsafe-call
 		exportTemplateNode.declaration.elements.push({
+			argument: { name: 'oldConfig', type: 'Identifier' },
 			type: 'SpreadElement',
-			argument: { type: 'Identifier', name: 'oldConfig' },
 		});
 
 		const astExportIdx = ast.body.indexOf(astExport);
+		// eslint-disable-next-line security/detect-object-injection
 		ast.body[astExportIdx] = exportTemplateNode;
 		ast.body.splice(astExportIdx - 1, 0, oldExportValue);
 
 		return ast;
-
 	}
 
 	/**
-	 * @param {import('./types').ConfigFile['rules']} rules The rules to be used to create the object
-	 * @returns {import('estree').ObjectExpression} The object containing the spread rules
-	 * @private
+	 * ! NOTE:
+	 * These functions declared bellow are notably hard to read and have lots of exceptions and
+	 * disabled eslint and typescript checks. Unfortunately this is something that I wasn't able to
+	 * prevent because a lot of the AST typescript types are somewhat wrong or simply hard to work
+	 * with them.
+	 *
+	 * But for somewhat help developing and prevent unwanted errors in the future, the types and
+	 * eslint errors are explicitly disabled and types are explicitly overridden. This is why
+	 * there are so many JSDoc type annotations and comments in general.
+	 *
+	 * Any help to make this code more readable and robust is appreciated.
 	 */
-	createRulesObject(rules) {
-		/** @type {import('estree').SpreadElement[]} */
-		// @ts-expect-error The array is filtered to remove undefined's
-		const expressions = rules
-			.map(r => {
-				const e = astUtils.stringToExpression(r);
-				if (e) return astUtils.toSpreadElement(e);
-				else undefined;
-			}).filter(e => e);
-
-		return {
-			type: 'ObjectExpression',
-			properties: [{
-				// @ts-expect-error because ObjectProperty doesn't exist in estree types
-				type: 'ObjectProperty',
-				key: { type: 'Identifier', name: 'rules' },
-				value: {
-					type: 'ObjectExpression',
-					properties: expressions,
-				},
-			}],
-		};
-
-	}
 
 	/**
-	 * Adds elements to the default export node, without adding duplicates
+	 * @typedef {import('estree').Program} Program
+	 * @typedef {(
+	 * import('./lib/ast-utils.js').ExpressionOrIdentifier |
+	 * import('estree').ObjectExpression |
+	 * import('estree').SpreadElement
+	 * )} ConfigArrayElement
+	 */
+
+	/**
+	 * Adds elements to the default export node, without adding duplicates.
 	 * @typedef {import('estree').ArrayExpression} ArrayExpression
-	 * @param {Program} ast The program ast to be manipulated
-	 * @param {ConfigArrayElement[]} elements The elements to be added to the array
-	 * @returns {Program} The final ast with the recreated default export
+	 * @param {Program} ast - The program ast to be manipulated.
+	 * @param {ConfigArrayElement[]} elements - The elements to be added to the array.
+	 * @returns {Program} The final ast with the recreated default export.
 	 * @private
 	 */
-	addElementsToExport(ast, elements) {
+	static addElementsToExport(ast, elements) {
 		/** @type {import('estree').ExportDefaultDeclaration} */
 		// @ts-expect-error Node type needs to be ExportDefaultDeclaration to be founded
-		const exportNode = ast.body.find(n => n.type === 'ExportDefaultDeclaration');
+		const exportNode = ast.body.find(n =>
+			n.type === 'ExportDefaultDeclaration',
+		);
 		const exportNodeIdx = ast.body.indexOf(exportNode);
 
 		/** @type {ArrayExpression} */
@@ -247,45 +190,61 @@ export default class ConfigsWriter {
 		const array = exportNode.declaration;
 
 		for (const e of elements) {
-			if (e.type !== 'ObjectExpression' && astUtils.findInArray(array, e)) continue;
-			array.elements.push(e);
+			if (!(
+				e.type !== 'ObjectExpression' &&
+				astUtils.findInArray(array, e)
+			))
+				array.elements.push(e);
 		}
 
 		exportNode.declaration = array;
+		// eslint-disable-next-line security/detect-object-injection
 		ast.body[exportNodeIdx] = exportNode;
 
 		return ast;
 	}
 
 	/**
-	 * @param {Program} ast The program ast to be manipulated
-	 * @param {import('./types').ConfigFile['imports']} imports The imports map to be used
-	 * @returns {Program} The final ast with the recreated default export
+	 * @param {Program} ast - The program ast to be manipulated.
+	 * @param {import('./types.js').ConfigFile['imports']} imports - The imports map to be used.
+	 * @returns {Program} The final ast with the recreated default export.
 	 */
-	addPackageImports(ast, imports) {
-
+	static addPackageImports(ast, imports) {
 		/** @type {import('estree').ImportDeclaration[]} */
 		const importDeclarations = [];
 
 		for (const [pkgName, specifiers] of imports) {
 			/** @type {import('estree').ImportDeclaration | undefined} */
 			// @ts-expect-error type error, the specifier has to be ImportDeclaration to be founded
-			const existingDeclaration = ast.body.find(s => s.type === 'ImportDeclaration' && s.source.value === pkgName);
+			const existingDeclaration = ast.body.find(s =>
+				s.type === 'ImportDeclaration' &&
+				s.source.value === pkgName,
+			);
 
 			const importDeclaration = astUtils.createImportDeclaration(
-				pkgName, typeof specifiers === 'string' ? specifiers : undefined, existingDeclaration,
+				pkgName,
+				typeof specifiers === 'string'
+					? specifiers
+					: undefined,
+				existingDeclaration,
 			);
 
 			if (typeof specifiers !== 'string') {
-				specifiers.forEach(s => {
-					if (typeof s === 'string') return importDeclaration.addSpecifier(s);
-					else return importDeclaration.addSpecifier(s[0], s[1]);
-				});
+				for (const s of specifiers) {
+					if (typeof s === 'string')
+						importDeclaration.addSpecifier(s);
+					else
+						importDeclaration.addSpecifier(s[0], s[1]);
+				}
 			}
 
-			if (existingDeclaration) ast.body[ast.body.indexOf(existingDeclaration)] = importDeclaration.body;
-			else importDeclarations.push(importDeclaration.body);
-
+			if (existingDeclaration) {
+				ast.body[ast.body.indexOf(existingDeclaration)] =
+					importDeclaration.body;
+			}
+			else {
+				importDeclarations.push(importDeclaration.body);
+			}
 		}
 
 		ast.body.unshift(...importDeclarations);
@@ -293,20 +252,55 @@ export default class ConfigsWriter {
 		return ast;
 	}
 
+	/**
+	 * @param {import('./types.js').ConfigFile['rules']} rules -
+	 * The rules to be used to create the object.
+	 * @returns {import('estree').ObjectExpression} The object containing the spread rules.
+	 * @private
+	 */
+	static createRulesObject(rules) {
+		/** @type {import('estree').SpreadElement[]} */
+		// @ts-expect-error The array is filtered to remove undefined's
+		const expressions = rules
+			.map((r) => {
+				const e = astUtils.stringToExpression(r);
+				return e ? astUtils.toSpreadElement(e) : undefined;
+			}).filter(Boolean);
+
+		return {
+			properties: [{
+				key: { name: 'rules', type: 'Identifier' },
+				// @ts-expect-error because ObjectProperty doesn't exist in estree types
+				type: 'ObjectProperty',
+				value: {
+					properties: expressions,
+					type: 'ObjectExpression',
+				},
+			}],
+			type: 'ObjectExpression',
+		};
+	}
 
 	/**
-	 * @param {import('./types').ConfigFile} config The config file object to be transformed into a eslint.config.js file
-	 * @returns {Promise<string>} The generated config file contents
+	 * @param {import('./types.js').ConfigFile} config -
+	 * The config file object to be transformed into a eslint.config.js file.
+	 * @returns {Promise<string>} The generated config file contents.
 	 */
-	async generate(config) {
-
-		const existingConfig = existsSync(config.path) ? await fs.readFile(config.path, 'utf-8') : '';
+	static async generate(config) {
+		// eslint-disable-next-line security/detect-non-literal-fs-filename
+		const existingConfig = existsSync(config.path)
+			// eslint-disable-next-line security/detect-non-literal-fs-filename
+			? await fs.readFile(config.path, 'utf8')
+			: '';
 
 		/** @type {{program: Program}} */
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-		const { program: ast } = parse(existingConfig, { parser: (await import('recast/parsers/babel.js')) });
+		const { program: ast } = parse(
+			existingConfig,
+			{ parser: (await import('recast/parsers/babel.js')) },
+		);
 
-		await this.addDefaultExport(ast);
+		await ConfigsWriter.addDefaultExport(ast);
 
 		/**
 		 * @type {ConfigArrayElement[]}
@@ -314,31 +308,100 @@ export default class ConfigsWriter {
 		// @ts-expect-error The array is filtered to remove undefined's
 		const elements = [
 			...config.configs.map(c => astUtils.stringToExpression(c)),
-			...config.presets.map(p => {
+			...config.presets.map((p) => {
 				const e = astUtils.stringToExpression(p);
-				if (e) return astUtils.toSpreadElement(e);
-				else undefined;
+				return e ? astUtils.toSpreadElement(e) : undefined;
 			}),
 			config.rules.length > 0
-				? this.createRulesObject(config.rules)
+				? ConfigsWriter.createRulesObject(config.rules)
 				: undefined,
-		].filter(e => e);
+		].filter(Boolean);
 
-		this.addElementsToExport(ast, elements);
-		this.addPackageImports(ast, config.imports);
+		ConfigsWriter.addElementsToExport(ast, elements);
+		ConfigsWriter.addPackageImports(ast, config.imports);
 
-		const finalCode = prettyPrint(ast, { parser: (await import('recast/parsers/babel.js')) }).code;
+		const finalCode = prettyPrint(
+			ast,
+			{ parser: (await import('recast/parsers/babel.js')) },
+		).code;
 		return finalCode;
+	}
 
+
+	/**
+	 * @param {import('./types.js').Package} pkg - The package to generate the config string from.
+	 * @returns {import('./types.js').ConfigFile} The config file object.
+	 */
+	// eslint-disable-next-line max-statements
+	generateObj(pkg) {
+		/** @type {import('./types.js').ConfigFile} */
+		const configObj = {
+			configs: [],
+			imports: new Map(),
+			path: join(pkg.path, 'eslint.config.js'),
+			presets: [],
+			rules: [],
+		};
+
+		if (!pkg.root) {
+			const rootConfig = join(
+				getPathDepth(pkg.path, this.root),
+				'eslint.config.js',
+			);
+			configObj.imports.set(rootConfig.startsWith('.') ? rootConfig : `./${rootConfig}`, 'root');
+			configObj.presets.push('root');
+		}
+
+		for (const [configName, optionsNames] of notNull(pkg.config)) {
+			const config = this.configs.find(c => c.name === configName);
+			// eslint-disable-next-line no-continue
+			if (!config) continue;
+
+			const options = config.options.filter(o =>
+				optionsNames.includes(o.name),
+			);
+			// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition, no-continue
+			if (!options || options.length === 0) continue;
+
+			// eslint-disable-next-line unicorn/no-array-reduce
+			const imports = options.reduce((acc, opt) => {
+				const map1 = new Map(Object.entries(acc.packages ?? {}));
+				const map2 = new Map(Object.entries(opt.packages ?? {}));
+				acc.packages = Object.fromEntries(mergeImportsMaps(map1, map2));
+				return acc;
+			});
+
+			configObj.imports = mergeImportsMaps(
+				configObj.imports,
+				new Map(Object.entries(imports.packages ?? {})),
+			);
+
+			configObj.configs = [...new Set([
+				...configObj.configs,
+				...options.flatMap(o => o.configs ?? []),
+			])];
+
+			configObj.rules = [...new Set([
+				...configObj.rules,
+				...options.flatMap(o => o.rules ?? []),
+			])];
+
+			configObj.presets = [...new Set([
+				...configObj.presets,
+				...options.flatMap(o => o.presets ?? []),
+			])];
+		}
+
+		return configObj;
 	}
 
 	/**
-	 * @param {string} path The path to the file to be written
-	 * @param {string} content The content of the file
+	 * @param {string} path - The path to the file to be written.
+	 * @param {string} content - The content of the file.
 	 * @returns {Promise<void>}
 	 */
-	async write(path, content) {
-		await fs.writeFile(path, content, 'utf-8');
+	static async write(path, content) {
+		// eslint-disable-next-line security/detect-non-literal-fs-filename
+		await fs.writeFile(path, content, 'utf8');
 	}
-
 }
diff --git a/packages/cli/src/configsProcessor.js b/packages/cli/src/configs-processor.js
similarity index 52%
rename from packages/cli/src/configsProcessor.js
rename to packages/cli/src/configs-processor.js
index 6424ed1..d035257 100755
--- a/packages/cli/src/configsProcessor.js
+++ b/packages/cli/src/configs-processor.js
@@ -1,56 +1,75 @@
-#!node
+import process from 'node:process';
 import path from 'node:path';
-import glob from 'picomatch';
+
 import prompts from 'prompts';
+import glob from 'picomatch';
 import c from 'picocolors';
+
 import capitalize from './lib/capitalize.js';
 
 export default class ConfigsProcessor {
-	/** @type {string} */
-	dir = process.cwd();
-
 	/** @type {import('./types.js').Config[]} */
 	configs;
 
-	/** @type {string[] | undefined} */
-	#packagesPatterns;
+	/** @type {string} */
+	dir = process.cwd();
 
 	/**
 	 * @param {{
-	 * 	configs: import('./types.js').Config[],
-	 * 	packages?: string[],
-	 * 	directory?: string,
-	 * }} options - Cli options
+	 * configs: import('./types.js').Config[],
+	 * packages?: string[],
+	 * directory?: string,
+	 * }} options - Cli options.
 	 */
 	constructor(options) {
-		this.#packagesPatterns = options.packages;
-		this.configs = options?.configs;
+		this.configs = options.configs;
 		this.dir = path.normalize(options.directory ?? this.dir);
 	}
 
 	/**
-	 * @param {import('./types.js').Package} pkg - Package to detect from
-	 * @param {import('./types.js').Config['options']} options - Options to be passed
-	 * @param {boolean} single - Whether to only detect one option
-	 * @returns {string[]} - The detected options
+	 * @param {import('./types.js').Package} pkg - The package to detect configs.
+	 * @returns {import('./types.js').Package['config']} - Detected configs record.
 	 */
-	detectOptions(pkg, options, single) {
+	detectConfig(pkg) {
+		/** @type {import('./types.js').Package['config']} */
+		const pkgConfig = new Map();
 
+		for (const config of this.configs.filter(cfg => !cfg.manual)) {
+			pkgConfig.set(config.name, ConfigsProcessor.detectOptions(
+				pkg,
+				config.options,
+				config.type !== 'multiple',
+			));
+		}
+
+		return pkgConfig;
+	}
+
+	/**
+	 * @param {import('./types.js').Package} pkg - Package to detect from.
+	 * @param {import('./types.js').Config['options']} options - Options to be passed.
+	 * @param {boolean} single - Whether to only detect one option.
+	 * @returns {string[]} - The detected options.
+	 */
+	static detectOptions(pkg, options, single) {
 		/** @type {string[]} */
 		const detectedOptions = [];
 
 		for (const option of options) {
-
 			if (option.detect === true) {
 				detectedOptions.push(option.name);
+				// eslint-disable-next-line no-continue
 				continue;
 			}
-			else if (!option.detect) continue;
+			// eslint-disable-next-line no-continue
+			else if (!option.detect) { continue; }
 
 			const match = glob(option.detect);
 
-			const files = pkg.files.filter(f => match ? match(f) : false);
-			const directories = pkg.directories.filter(f => match ? match(f) : false);
+			const files = pkg.files.filter(f => (match ? match(f) : false));
+			const directories = pkg.directories.filter(f =>
+				(match ? match(f) : false),
+			);
 
 			if (files.length > 0 || directories.length > 0) {
 				detectedOptions.push(option.name);
@@ -62,26 +81,24 @@ export default class ConfigsProcessor {
 	}
 
 	/**
-	 * @param {import('./types.js').Package[] | import('./types.js').Package} pkg - The packages to questions the configs
-	 * @param {import('./types').Config[]} configs - The configs to be used
-	 * @returns {Promise<import('./types.js').Package[]>} - The selected options by the user
+	 * @param {import('./types.js').Package[] | import('./types.js').Package} pkg -
+	 * The packages to questions the configs.
+	 * @param {import('./types.js').Config[]} configs - The configs to be used.
+	 * @returns {Promise<import('./types.js').Package[]>} - The selected options by the user.
 	 */
+	// eslint-disable-next-line max-statements, complexity, max-lines-per-function
 	async questionConfig(pkg, configs) {
-
 		const packages = Array.isArray(pkg) ? [...pkg] : [pkg];
 
 		const instructions = c.dim(`\n${c.bold('A: Toggle all')} - ↑/↓: Highlight option - ←/→/[space]: Toggle selection - enter/return: Complete answer`);
 
 		for (const config of configs) {
-
 			/** @type {import('prompts').Choice[]} */
-			const configChoices = config.options.map(option => {return { title: `${capitalize(option.name)}`, value: option.name };});
+			const configChoices = config.options.map(option => ({ title: `${capitalize(option.name)}`, value: option.name }));
 
 			/** @type {Record<string, string[]>} */
+			// eslint-disable-next-line no-await-in-loop
 			const selectedOptions = await prompts({
-				name: config.name,
-				type: config.type === 'multiple' ? 'multiselect' : 'select',
-				message: capitalize(config.name),
 				choices: config.type === 'confirm' ? [
 					{
 						title: 'Yes',
@@ -93,11 +110,19 @@ export default class ConfigsProcessor {
 					},
 				] : configChoices,
 				hint: config.description,
-				instructions: instructions + c.dim(c.italic('\nSelect none if you don\'t want to use this configuration\n')),
+				instructions: instructions + c.dim(c.italic(
+					// eslint-disable-next-line max-len
+					'\nSelect none if you don\'t want to use this configuration\n',
+				)),
+				message: capitalize(config.name),
+				name: config.name,
+				type: config.type === 'multiple' ? 'multiselect' : 'select',
 			});
 
+			// eslint-disable-next-line no-continue, @typescript-eslint/no-unnecessary-condition
 			if (!selectedOptions[config.name]) continue;
 
+			// eslint-disable-next-line no-continue
 			if (selectedOptions[config.name].length === 0) continue;
 
 			if (packages.length <= 1) {
@@ -105,64 +130,47 @@ export default class ConfigsProcessor {
 					...(packages[0].config ?? []),
 					...Object.entries(selectedOptions),
 				]);
+				// eslint-disable-next-line no-continue
 				continue;
 			}
 
-			/** @type {{title: string, value: import('./types').Package}[]} */
+			/** @type {{title: string, value: import('./types.js').Package}[]} */
 			const packagesOptions = packages
-				.map(pkg => {
-					return !pkg.root
-						? {
-								title: `${pkg.name} ${c.dim(pkg.path.replace(this.dir, '.'))}`,
-								value: pkg,
-							}
-						: { title: 'root', value: pkg };
-				})
+				.map(p => (p.root
+					? { title: 'root', value: p }
+					: {
+							title: `${p.name} ${c.dim(p.path.replace(this.dir, '.'))}`,
+							value: p,
+						}))
 				.filter(p => p.title !== 'root');
 
-			/** @type {Record<'packages', import('./types').Package[]>} */
+			/** @type {Record<'packages', import('./types.js').Package[]>} */
+			// eslint-disable-next-line no-await-in-loop
 			const selected = await prompts({
+				choices: packagesOptions,
+				instructions: instructions + c.dim(c.italic(
+					'\nToggle all to use in the root configuration\n',
+				)),
+				message: `What packages would you like to apply ${config.type === 'single' ? 'this choice' : 'these choices'}?`,
+				min: 1,
 				name: 'packages',
 				type: 'autocompleteMultiselect',
-				message: `What packages would you like to apply ${config.type === 'single' ? 'this choice' : 'these choices'}?`,
-				choices: packagesOptions,
-				min: 1,
-				instructions: instructions + c.dim(c.italic('\nToggle all to use in the root configuration\n')),
 			});
-			selected.packages = selected.packages ?? [];
+			// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+			selected.packages ??= [];
 
-			selected.packages.map(pkg => {
-				pkg.config = new Map([
-					...(pkg.config ?? []),
+			selected.packages.map((p) => {
+				p.config = new Map([
+					...(p.config ?? []),
 					...Object.entries(selectedOptions),
-				]); return pkg;
+				]); return p;
 			});
-			packages.map(pkg => selected.packages.find(s => s.name === pkg.name) ?? pkg);
+			packages.map(p =>
+				selected.packages.find(s => s.name === p.name) ?? p,
+			);
 		}
 
 		return packages;
-
 	}
-
-	/**
-	 * @param {import('./types').Package} pkg - The package to detect configs
-	 * @returns {import('./types').Package['config']} - Detected configs record
-	 */
-	detectConfig(pkg) {
-
-		/** @type {import('./types.js').Package['config']} */
-		const pkgConfig = new Map();
-
-		for (const config of this.configs.filter(c => !c.manual)) {
-			pkgConfig.set(config.name, this.detectOptions(
-				pkg,
-				config.options,
-				config.type !== 'multiple',
-			));
-		}
-
-		return pkgConfig;
-	}
-
 }
 
diff --git a/packages/cli/src/lib/astUtils.js b/packages/cli/src/lib/ast-utils.js
similarity index 55%
rename from packages/cli/src/lib/astUtils.js
rename to packages/cli/src/lib/ast-utils.js
index be0607c..9e043cc 100644
--- a/packages/cli/src/lib/astUtils.js
+++ b/packages/cli/src/lib/ast-utils.js
@@ -2,10 +2,10 @@ import { parse, print } from 'recast';
 
 /**
  * @typedef {(
- * 	import('estree').MemberExpression |
- * 	import('estree').Identifier |
- * 	import('estree').CallExpression |
- *  import('estree').NewExpression
+ * import('estree').MemberExpression |
+ * import('estree').Identifier |
+ * import('estree').CallExpression |
+ * import('estree').NewExpression
  * )} ExpressionOrIdentifier
  * This type only includes the expressions used in the cli's config type
  * @typedef {import('estree').VariableDeclaration} VariableDeclaration
@@ -18,42 +18,49 @@ import { parse, print } from 'recast';
  */
 
 /**
- * @param {IdentifierName} identifier Nave of the variable identifier
- * @param {VariableKind} [kind] Type of variable declaration
- * @param {VariableInit} [init] Initial value of the variable
- * @returns {VariableDeclaration} The variable declaration ast node object
+ * @param {IdentifierName} identifier - Nave of the variable identifier.
+ * @param {VariableInit} [init] - Initial value of the variable.
+ * @param {VariableKind} [kind] - Type of variable declaration.
+ * @returns {VariableDeclaration} The variable declaration ast node object.
  */
-function createVariable(identifier, kind = 'const', init) {
+function createVariable(identifier, init, kind = 'const') {
 	return {
-		type: 'VariableDeclaration',
-		kind,
 		declarations: [{
-			type: 'VariableDeclarator',
-			id: { type: 'Identifier', name: identifier },
+			id: { name: identifier, type: 'Identifier' },
 			init,
+			type: 'VariableDeclarator',
 		}],
+		kind,
+		type: 'VariableDeclaration',
 	};
 }
 
 /**
- * @param {string} string The expression in string
- * @returns {ExpressionOrIdentifier | undefined} The expression or identifier node of that string (undefined if string is not a expression)
+ * @param {string} string - The code/expression in string.
+ * @returns {ExpressionOrIdentifier | undefined} -
+ * The expression or identifier node of that string (undefined if string is not a expression).
  */
 function stringToExpression(string) {
 	/** @type {ExpressionOrIdentifier} */
+	// eslint-disable-next-line max-len
 	// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access
 	const e = parse(string).program.body[0].expression;
-	if (['MemberExpression', 'Identifier', 'CallExpression', 'NewExpression'].includes(e.type)) return e;
-	else return undefined;
+	if ([
+		'CallExpression',
+		'Identifier',
+		'MemberExpression',
+		'NewExpression',
+	].includes(e.type)) return e;
+	return undefined;
 }
 
 /**
- * @param {ArrayExpression} array The array node to search trough
- * @param {ExpressionOrIdentifier | SpreadElement} element The element to be search
- * @returns {ExpressionOrIdentifier | undefined} The element of the array founded, undefined if it isn't found
+ * @param {ArrayExpression} array - The array node to search trough.
+ * @param {ExpressionOrIdentifier | SpreadElement} element - The element to be search.
+ * @returns {ExpressionOrIdentifier | undefined}
+ * The element of the array founded, undefined if it isn't found.
  */
 function findInArray(array, element) {
-
 	/** @type {ExpressionOrIdentifier[]} */
 	// @ts-expect-error The array should have just tge type above
 	element = element.type === 'SpreadElement' ? element.argument : element;
@@ -61,7 +68,7 @@ function findInArray(array, element) {
 	/** @type {ExpressionOrIdentifier[]} */
 	// @ts-expect-error The array is filtered to have the type above
 	const filteredElements = array.elements
-		.map(n => {
+		.map((n) => {
 			if (n?.type === 'SpreadElement') return n.argument;
 			return n;
 		}).filter(n => n && n.type === element.type);
@@ -69,56 +76,88 @@ function findInArray(array, element) {
 	const toStringElements = filteredElements.map(n => print(n).code);
 	const toStringElement = print(element).code;
 
-	const idx = toStringElements.findIndex(e => e === toStringElement);
+	const idx = toStringElements.indexOf(toStringElement);
+	// eslint-disable-next-line security/detect-object-injection
 	return filteredElements[idx];
 }
 
 /**
- * @param {ExpressionOrIdentifier} expression The expression to be spread
- * @returns {SpreadElement} The spread element node
+ * @param {ExpressionOrIdentifier} expression - The expression to be spread.
+ * @returns {SpreadElement} The spread element node.
  */
 function toSpreadElement(expression) {
 	return {
-		type: 'SpreadElement',
 		argument: expression,
+		type: 'SpreadElement',
 	};
 }
 
+// eslint-disable-next-line no-secrets/no-secrets
 /**
  * @typedef {{
- *	body: import('estree').ImportDeclaration
- *  addSpecifier: (specifier: string, alias?: string) => ThisType<ImportDeclarationHelper>
- *  convertDefaultSpecifier: () => ThisType<ImportDeclarationHelper>
+ * body: import('estree').ImportDeclaration
+ * addSpecifier: (specifier: string, alias?: string) => ThisType<ImportDeclarationHelper>
+ * convertDefaultSpecifier: () => ThisType<ImportDeclarationHelper>
  * }} ImportDeclarationHelper
- * @param {string} source The package name or source path to be imported
- * @param {string} [defaultImported] The default specifier imported
- * @param {import('estree').ImportDeclaration} [body] The body of the import declaration to start with
- * @returns {ImportDeclarationHelper} A helper object for manipulating the import declaration
+ * @param {string} source - The package name or source path to be imported.
+ * @param {string} [defaultImported] - The default specifier imported.
+ * @param {import('estree').ImportDeclaration} [body] -
+ * The body of the import declaration to start with.
+ * @returns {ImportDeclarationHelper} A helper object for manipulating the import declaration.
  */
 function createImportDeclaration(source, defaultImported, body) {
 	const helper = {
+		/**
+		 * @param {string} specifier - The value to be imported from the package.
+		 * @param {string} [alias] - The local alias of the value.
+		 * @returns {ThisType<ImportDeclarationHelper>} This helper with the added specifiers.
+		 */
+		addSpecifier(specifier, alias) {
+			this.convertDefaultSpecifier();
+			if (this.body.specifiers.some(s =>
+				s.local.name === alias || s.local.name === specifier,
+			))
+				return this;
+
+			this.body.specifiers.push({
+				imported: {
+					name: specifier,
+					type: 'Identifier',
+				},
+				local: {
+					name: alias ?? specifier,
+					type: 'Identifier',
+				},
+				type: 'ImportSpecifier',
+			});
+
+			return this;
+		},
 		/** @type {import('estree').ImportDeclaration} */
 		body: body ?? {
-			type: 'ImportDeclaration',
-			specifiers: defaultImported ? [{
-				type: 'ImportDefaultSpecifier',
-				local: { type: 'Identifier', name: defaultImported },
-			}] : [],
 			source: {
 				type: 'Literal',
 				value: source,
 			},
+			specifiers: defaultImported ? [{
+				local: { name: defaultImported, type: 'Identifier' },
+				type: 'ImportDefaultSpecifier',
+			}] : [],
+			type: 'ImportDeclaration',
 		},
 		/**
 		 * Converts a default specifier to a specifier with a alias.
+		 * @returns {ThisType<ImportDeclarationHelper>} -
+		 * This helper with the converted default specifier.
 		 * @example
 		 * import eslit from 'eslit';
 		 * // Is converted to
 		 * import { default as eslit } from 'eslit';
-		 * @returns {ThisType<ImportDeclarationHelper>} This helper with the converted default specifier
 		 */
 		convertDefaultSpecifier() {
-			const specifier = this.body.specifiers.find(s => s.type === 'ImportDefaultSpecifier');
+			const specifier = this.body.specifiers.find(s =>
+				s.type === 'ImportDefaultSpecifier',
+			);
 			if (!specifier)
 				return this;
 
@@ -128,44 +167,24 @@ function createImportDeclaration(source, defaultImported, body) {
 			);
 			return this.addSpecifier('default', specifier.local.name);
 		},
-		/**
-		 * @param {string} specifier The value to be imported from the package
-		 * @param {string} [alias] The local alias of the value
-		 * @returns {ThisType<ImportDeclarationHelper>} This helper with the added specifiers
-		 */
-		addSpecifier(specifier, alias) {
-			this.convertDefaultSpecifier();
-			if (this.body.specifiers.find(s => s.local.name === alias || s.local.name === specifier))
-				return this;
-
-			this.body.specifiers.push({
-				type: 'ImportSpecifier',
-				imported: {
-					type: 'Identifier',
-					name: specifier,
-				},
-				local: {
-					type: 'Identifier',
-					name: alias ?? specifier,
-				},
-			});
-
-			return this;
-		},
 	};
 
-	if (defaultImported && body && !body.specifiers.find(s => s.type === 'ImportDefaultSpecifier' && s.local.name === defaultImported)) {
+	if (defaultImported &&
+		body &&
+		!body.specifiers.some(s =>
+			s.type === 'ImportDefaultSpecifier' &&
+			s.local.name === defaultImported,
+		))
 		helper.addSpecifier('default', defaultImported);
-	}
-	return helper;
 
+	return helper;
 }
 
 const astUtils = {
+	createImportDeclaration,
 	createVariable,
+	findInArray,
 	stringToExpression,
 	toSpreadElement,
-	findInArray,
-	createImportDeclaration,
 };
 export default astUtils;
diff --git a/packages/cli/src/lib/capitalize.js b/packages/cli/src/lib/capitalize.js
index 2f0dd9d..4c8a1f7 100644
--- a/packages/cli/src/lib/capitalize.js
+++ b/packages/cli/src/lib/capitalize.js
@@ -1,7 +1,7 @@
 
 /**
- * @param {string} str - The string to capitalize
- * @returns {string} The capitalized string
+ * @param {string} str - The string to capitalize.
+ * @returns {string} The capitalized string.
  */
 export default function capitalize(str) {
 	return str[0].toUpperCase() + str.slice(1);
diff --git a/packages/cli/src/lib/count.js b/packages/cli/src/lib/count.js
index c1f6384..7fde05e 100644
--- a/packages/cli/src/lib/count.js
+++ b/packages/cli/src/lib/count.js
@@ -1,11 +1,12 @@
 
 /**
- * @param {import('../types').Package[]} packages - Package list
- * @returns {number} Number of packages' configs
+ * @param {import('../types').Package[]} packages - Package list.
+ * @returns {number} Number of packages' configs.
  */
 function packagesWithConfigs(packages) {
 	return packages.map(p =>
-		[...p.config?.values() ?? []].filter((options) => options.length > 0).length,
+		[...p.config?.values() ?? []]
+			.filter(options => options.length > 0).length,
 	).reduce((partial, sum) => partial + sum, 0);
 }
 
diff --git a/packages/cli/src/lib/notNull.js b/packages/cli/src/lib/not-null.js
similarity index 61%
rename from packages/cli/src/lib/notNull.js
rename to packages/cli/src/lib/not-null.js
index b58aa98..bea0068 100644
--- a/packages/cli/src/lib/notNull.js
+++ b/packages/cli/src/lib/not-null.js
@@ -1,15 +1,17 @@
+// eslint-disable-next-line no-secrets/no-secrets
 /**
  * JSDoc types lack a non-null assertion.
  * @template T
- * @param {T} value The value which to assert against null or undefined
- * @returns {NonNullable<T>} The said value
- * @throws {TypeError} If the value is unexpectedly null or undefined
- * @author Jimmy Wärting - https://github.com/jimmywarting
+ * @param {T} value - The value which to assert against null or undefined.
+ * @returns {NonNullable<T>} The said value.
+ * @throws {TypeError} If the value is unexpectedly null or undefined.
  * @see https://github.com/Microsoft/TypeScript/issues/23405#issuecomment-873331031
  * @see https://github.com/Microsoft/TypeScript/issues/23405#issuecomment-1249287966
+ * @author Jimmy Wärting - https://github.com/jimmywarting
  */
 export default function notNull(value) {
 	// Use `==` to check for both null and undefined
-	if (value == null) throw new Error('did not expect value to be null or undefined');
+	if (value === null || value === undefined)
+		throw new Error('did not expect value to be null or undefined');
 	return value;
 }
diff --git a/packages/cli/src/packageInstaller.js b/packages/cli/src/package-installer.js
similarity index 57%
rename from packages/cli/src/packageInstaller.js
rename to packages/cli/src/package-installer.js
index a1760a5..88469f4 100644
--- a/packages/cli/src/packageInstaller.js
+++ b/packages/cli/src/package-installer.js
@@ -1,26 +1,29 @@
+/* eslint-disable no-console */
+/* eslint-disable max-classes-per-file */
+import { readFile, writeFile } from 'node:fs/promises';
 import { existsSync, readFileSync } from 'node:fs';
-import { join } from 'node:path';
 import { exec } from 'node:child_process';
+import { join } from 'node:path';
+
+import { parse, prettyPrint } from 'recast';
 import { createSpinner } from 'nanospinner';
 import c from 'picocolors';
-import { parse, prettyPrint } from 'recast';
-import { readFile, writeFile } from 'node:fs/promises';
 
 
 /**
  * @type {import('./types').PackageManagerHandler}
  */
 class CommandHandler {
+	/** @type {((path: string, packages: string[]) => string | Promise<string>) | undefined} */
+	checker;
 
 	/** @type {string} */
 	command;
 
-	/** @type {((path: string, packages: string[]) => string | Promise<string>) | undefined} */
-	checker;
-
 	/**
-	 * @param {string} command What command to use to install
-	 * @param {(path: string, packages: string[]) => string | Promise<string>} [checker] Checks if a argument should be passed
+	 * @param {string} command - What command to use to install.
+	 * @param {(path: string, packages: string[]) => string | Promise<string>} [checker] -
+	 * Checks if a argument should be passed.
 	 */
 	constructor(command, checker) {
 		this.command = command;
@@ -28,20 +31,20 @@ class CommandHandler {
 	}
 
 	/**
-	 * @param {string} path The path to run the command
-	 * @param {string[]} packages The packages to be added on the command
+	 * @param {string} path - The path to run the command.
+	 * @param {string[]} packages - The packages to be added on the command.
 	 * @returns {Promise<void>}
 	 */
 	async install(path, packages) {
-
 		if (this.checker)
 			this.command += await this.checker(path, packages);
 
 		return new Promise((res) => {
 			const spinner = createSpinner(`Installing packages with ${c.green(this.command)} ${c.dim(packages.join(' '))}`).start();
 			try {
+				// eslint-disable-next-line security/detect-child-process
 				const child = exec(`${this.command} ${packages.join(' ')}`, { cwd: path });
-				child.stdout?.on('data', (chunk) => spinner.update({
+				child.stdout?.on('data', chunk => spinner.update({
 					// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 					text: `Installing packages with ${c.green(this.command)} ${c.dim(packages.join(' '))}\n  ${c.dim(chunk)}`,
 				}));
@@ -52,7 +55,8 @@ class CommandHandler {
 				});
 			}
 			catch (error) {
-				// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
+				// eslint-disable-next-line max-len
+				// eslint-disable-next-line @typescript-eslint/restrict-template-expressions, @typescript-eslint/no-confusing-void-expression
 				res(console.error(`Error while installing the packages with ${this.command} ${c.dim(packages.join(' '))} on ${path}: ${error}`));
 			}
 		});
@@ -62,53 +66,49 @@ class CommandHandler {
 /**
  * @type {import('./types').PackageManagerHandler}
  */
-class DenoHandler {
-
+const DenoHandler = {
 	/**
-	 * @param {string} path The path to run the command
-	 * @param {string[]} packages The packages to be added on the command
+	 * @param {string} path - The path to run the command.
+	 * @param {string[]} packages - The packages to be added on the command.
 	 * @returns {Promise<void>}
 	 */
 	async install(path, packages) {
 		const configPath = join(path, 'eslint.config.js');
 
+		// eslint-disable-next-line security/detect-non-literal-fs-filename
 		if (!existsSync(configPath)) return;
 
+		// eslint-disable-next-line security/detect-non-literal-fs-filename
 		const configFile = await readFile(configPath, 'utf8');
-		/** @type {{program: import('estree').Program}}*/
+		/** @type {{program: import('estree').Program}} */
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-		const { program: ast } = parse(configFile, { parser: (await import('recast/parsers/babel.js')) });
+		const { program: ast } = parse(
+			configFile,
+			{ parser: (await import('recast/parsers/babel.js')) },
+		);
 
 		ast.body.map((node) => {
 			if (node.type !== 'ImportDeclaration') return node;
 
-			if (packages.includes(node.source.value?.toString() ?? '')) {
+			if (packages.includes(node.source.value?.toString() ?? ''))
 				node.source.value = `npm:${node.source.value}`;
-			}
+
 			return node;
 		});
 
-		await writeFile(configPath, prettyPrint(ast).code, 'utf-8');
+		// eslint-disable-next-line security/detect-non-literal-fs-filename
+		await writeFile(configPath, prettyPrint(ast).code, 'utf8');
 
 		console.log(c.green('Added npm: specifier to dependencies'));
-
-	}
-
-}
+	},
+};
 
 export default class PackageInstaller {
-
-	/**
-	 * @typedef {Map<string, string[]>} PackagesMap
-	 * @type {PackagesMap}
-	 */
-	packagesMap;
-
 	/**
 	 * @typedef {{
-	 *   name: import('./types').PackageManagerName
-	 *   description: string
-	 * 	 handler: import('./types').PackageManagerHandler
+	 * name: import('./types').PackageManagerName
+	 * description: string
+	 * handler: import('./types').PackageManagerHandler
 	 * }} PackageManager
 	 * @type {PackageManager}
 	 */
@@ -118,40 +118,51 @@ export default class PackageInstaller {
 	 * @type {Record<import('./types').PackageManagerName, PackageManager>}
 	 */
 	packageManagers = {
-		deno: {
-			name: 'deno',
-			description: 'Adds npm: specifiers to the eslint.config.js file',
-			handler: new DenoHandler(),
-		},
 		bun: {
-			name: 'bun',
 			description: 'Uses bun install',
 			handler: new CommandHandler('bun install'),
+			name: 'bun',
 		},
-		pnpm: {
-			name: 'pnpm',
-			description: 'Uses pnpm install',
-			handler: new CommandHandler('pnpm install --save-dev', (path) => {
-				if (existsSync(join(path, 'pnpm-workspace.yaml')) && existsSync(join(path, 'package.json')))
-					return ' -w';
-				else return '';
-			}),
-		},
-		yarn: {
-			name: 'yarn',
-			description: 'Uses yarn add',
-			handler: new CommandHandler('yarn add --dev'),
+		deno: {
+			description: 'Adds npm: specifiers to the eslint.config.js file',
+			handler: DenoHandler,
+			name: 'deno',
 		},
 		npm: {
-			name: 'npm',
 			description: 'Uses npm install',
 			handler: new CommandHandler('npm install --save-dev'),
+			name: 'npm',
+		},
+		pnpm: {
+			description: 'Uses pnpm install',
+			handler: new CommandHandler('pnpm install --save-dev', (path) => {
+				if (
+					// eslint-disable-next-line security/detect-non-literal-fs-filename
+					existsSync(join(path, 'pnpm-workspace.yaml')) &&
+					// eslint-disable-next-line security/detect-non-literal-fs-filename
+					existsSync(join(path, 'package.json'))
+				)
+					return ' -w';
+				return '';
+			}),
+			name: 'pnpm',
+		},
+		yarn: {
+			description: 'Uses yarn add',
+			handler: new CommandHandler('yarn add --dev'),
+			name: 'yarn',
 		},
 	};
 
 	/**
-	 * @param {PackagesMap} packagesMap The map of directories and packages to be installed
-	 * @param {string} root Root directory path
+	 * @typedef {Map<string, string[]>} PackagesMap
+	 * @type {PackagesMap}
+	 */
+	packagesMap;
+
+	/**
+	 * @param {PackagesMap} packagesMap - The map of directories and packages to be installed.
+	 * @param {string} root - Root directory path.
 	 */
 	constructor(packagesMap, root) {
 		this.packagesMap = packagesMap;
@@ -159,51 +170,68 @@ export default class PackageInstaller {
 	}
 
 	/**
-	 * @param {string} root Root directory path
-	 * @returns {PackageManager} The package manager detected;
+	 * @param {string} root - Root directory path.
+	 * @returns {PackageManager} The package manager detected;.
 	 * @private
 	 */
+	// eslint-disable-next-line complexity
 	detectPackageManager(root) {
 		/** @type {(...path: string[]) => boolean} */
-		const exists = (...path) => existsSync(join(root, ...path));
+		function exists(...path) {
+			// eslint-disable-next-line security/detect-non-literal-fs-filename
+			return existsSync(join(root, ...path));
+		}
 
 		switch (true) {
 			case exists('deno.json'):
-			case exists('deno.jsonc'):
+			case exists('deno.jsonc'): {
 				return this.packageManagers.deno;
+			}
 
-			case exists('bun.lockb'):
+			case exists('bun.lockb'): {
 				return this.packageManagers.bun;
+			}
 
-			case exists('pnpm-lock.yaml'):
+			case exists('pnpm-lock.yaml'): {
 				return this.packageManagers.pnpm;
+			}
 
-			case exists('yarn.lock'):
+			case exists('yarn.lock'): {
 				return this.packageManagers.yarn;
+			}
 
-			case exists('package-lock.json'):
+			case exists('package-lock.json'): {
 				return this.packageManagers.npm;
+			}
 
-			case exists('package.json'):
+			case exists('package.json'): {
 				/** @type {{packageManager?: string}} */
+				// eslint-disable-next-line max-len
 				// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, no-case-declarations
-				const { packageManager } = JSON.parse(readFileSync(join(root, 'package.json'), 'utf8'));
+				const { packageManager } = JSON.parse(
+					// eslint-disable-next-line security/detect-non-literal-fs-filename
+					readFileSync(join(root, 'package.json'), 'utf8'),
+				);
 				if (!packageManager) return this.packageManagers.npm;
 
-				if (packageManager.includes('pnpm')) return this.packageManagers.pnpm;
-				if (packageManager.includes('yarn')) return this.packageManagers.yarn;
-				if (packageManager.includes('npm')) return this.packageManagers.npm;
+				if (packageManager.includes('pnpm'))
+					return this.packageManagers.pnpm;
+				if (packageManager.includes('yarn'))
+					return this.packageManagers.yarn;
+				if (packageManager.includes('npm'))
+					return this.packageManagers.npm;
 
-				else return this.packageManagers.npm;
+				return this.packageManagers.npm;
+			}
 
-			default: return this.packageManagers.npm;
+			default: { return this.packageManagers.npm;
+			}
 		}
 	}
 
 	async install() {
-		for (const [path, packages] of this.packagesMap) {
+		for (const [path, packages] of this.packagesMap)
+			// eslint-disable-next-line no-await-in-loop
 			await this.packageManager.handler.install(path, packages);
-		}
 	}
-
 }
diff --git a/packages/cli/src/types.d.ts b/packages/cli/src/types.d.ts
index 36a369c..725bb78 100644
--- a/packages/cli/src/types.d.ts
+++ b/packages/cli/src/types.d.ts
@@ -1,64 +1,72 @@
 import type { OptionValues } from 'commander';
 
-type PackageManagerName = 'npm' | 'pnpm' | 'yarn' | 'bun' | 'deno';
-
-type CliArgs = {
-	packages?: string[]
-	mergeToRoot?: boolean
-	installPkgs?: boolean | PackageManagerName
-	dir: string
-	configs: Config[]
-} & OptionValues;
+type PackageManagerName = 'bun' | 'deno' | 'npm' | 'pnpm' | 'yarn';
 
 interface PackageManagerHandler {
-	install(path: string, packages: string[]): Promise<void> | void
+	install(path: string, packages: string[]): Promise<void> | void,
 }
 
 type Config = {
-	name: string
-	type: 'single' | 'multiple'
-	manual?: boolean
-	description?: string
-	options: {
-		name: string
-		packages?: Record<string, string | (string | [string, string])[]>
-		configs?: string[]
-		rules?: string[]
-		presets?: string[]
-		detect?: string[] | true
-	}[]
-} | {
-	name: string
-	type: 'confirm'
-	manual: true
-	description?: string
+	description?: string,
+	manual: true,
+	name: string,
 	options: [{
-		name: 'yes'
-		packages?: Record<string, string | (string | [string, string])[]>
-		configs?: string[]
-		rules?: string[]
-		presets?: string[]
-		detect?: undefined
-	}]
+		configs?: string[],
+		detect?: undefined,
+		name: 'yes',
+		packages?: { [key: string]: ([string, string] | string)[] | string, },
+		presets?: string[],
+		rules?: string[],
+	}],
+	type: 'confirm',
+} | {
+	description?: string,
+	manual?: boolean,
+	name: string,
+	options: {
+		configs?: string[],
+		detect?: string[] | true,
+		name: string,
+		packages?: { [key: string]: ([string, string] | string)[] | string, },
+		presets?: string[],
+		rules?: string[],
+	}[],
+	type: 'multiple' | 'single',
 };
 
-interface Package {
-	root?: boolean
-	name: string
-	path: string
-	files: string[]
-	directories: string[]
-	config?: Map<string, string[]>
-	configFile?: ConfigFile
-}
+type CliArgs = {
+	configs: Config[],
+	dir: string,
+	installPkgs?: PackageManagerName | boolean,
+	mergeToRoot?: boolean,
+	packages?: string[],
+} & OptionValues;
 
 interface ConfigFile {
-	path: string
-	imports: Map<string, string | (string | [string, string])[]>
-	configs: string[]
-	presets: string[]
-	rules: string[]
-	content?: string
+	configs: string[],
+	content?: string,
+	imports: Map<string, ([string, string] | string)[] | string>,
+	path: string,
+	presets: string[],
+	rules: string[],
 }
 
-export type { PackageManagerName, PackageManagerHandler, CliArgs, Config, Package, ConfigFile };
+interface Package {
+	config?: Map<string, string[]>,
+	configFile?: ConfigFile,
+	directories: string[],
+	files: string[],
+	name: string,
+	path: string,
+	root?: boolean,
+}
+
+
+export type {
+	CliArgs,
+	Config,
+	ConfigFile,
+	Package,
+	PackageManagerHandler,
+	PackageManagerName,
+};
diff --git a/packages/cli/src/workspace.js b/packages/cli/src/workspace.js
index 0c88d1c..607d672 100644
--- a/packages/cli/src/workspace.js
+++ b/packages/cli/src/workspace.js
@@ -1,35 +1,41 @@
-import fs from 'node:fs/promises';
-import { existsSync } from 'node:fs';
-import YAML from 'yaml';
+/* eslint-disable security/detect-non-literal-fs-filename */
 import path, { join } from 'node:path';
+import { existsSync } from 'node:fs';
+import fs from 'node:fs/promises';
+
 import picomatch from 'picomatch';
+import YAML from 'yaml';
 
 
 /**
  * @template T
- * @param {Promise<T>} promise - The async function to try running
- * @returns {Promise<T | null>} - Returns the result of the async function, or null if it errors
+ * @param {Promise<T>} promise - The async function to try running.
+ * @returns {Promise<T | null>} - Returns the result of the async function, or null if it errors.
  */
 async function tryRun(promise) {
 	try {
 		return await promise;
 	}
-	catch (err) {
+	catch {
 		return null;
 	}
 }
 
 /**
- * @param {string} directory - The directory to find .gitignore and .eslintignore
- * @returns {Promise<string[]>} - List of ignore glob patterns
+ * @param {string} directory - The directory to find .gitignore and .eslintignore.
+ * @returns {Promise<string[]>} - List of ignore glob patterns.
  */
 async function getIgnoredFiles(directory) {
-	const gitIgnore = (await tryRun(fs.readFile(join(directory, '.gitignore'), 'utf8')) ?? '')
+	const gitIgnore = (
+		await tryRun(fs.readFile(join(directory, '.gitignore'), 'utf8')) ??
+		'')
 		.split('\n')
 		.filter(p => p && !p.startsWith('#'))
 		.map(p => join(directory, '**', p));
 
-	const eslintIgnore = (await tryRun(fs.readFile(join(directory, '.eslintignore'), 'utf8')) ?? '')
+	const eslintIgnore = (
+		await tryRun(fs.readFile(join(directory, '.eslintignore'), 'utf8')) ??
+		'')
 		.split('\n')
 		.filter(p => p && !p.startsWith('#'))
 		.map(p => join(directory, '**', p));
@@ -46,19 +52,19 @@ async function getPackageName(directory) {
 		const file = await fs.readFile(join(directory, 'package.json'), 'utf8');
 		/** @type {{name?: string}} */
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-		const obj = JSON.parse(file);
+		const object = JSON.parse(file);
 
-		if (obj.name) return obj.name;
+		if (object.name) return object.name;
 	}
 	return path.normalize(directory).split('/').at(-1) ?? directory;
 }
 
 export default class Workspace {
-
 	/**
-	 * @param {string} directory - The directory to get the workspace from
-	 * @param {string[] | false} [packagePatterns]
-	 * List of package patterns (`false` to explicitly tell that this workspace is not a monorepo)
+	 * @param {string} directory -
+	 * The directory to get the workspace from.
+	 * @param {string[] | false} [packagePatterns] -
+	 * List of package patterns (`false` to explicitly tell that this workspace is not a monorepo).
 	 */
 	constructor(directory, packagePatterns) {
 		this.dir = directory;
@@ -66,125 +72,93 @@ export default class Workspace {
 	}
 
 	/**
-	 * @param {string} [directory] - The directory to work on
-	 * @param {string[]} [ignores] - Glob patterns to ignore
-	 * @returns {Promise<{files: string[], directories: string[]}>} - List of all files in the directory
-	 */
-	async getPaths(directory = this.dir, ignores = []) {
-
-		ignores.push(
-			...[
-				'.git',
-				'.dist',
-				'.DS_Store',
-				'node_modules',
-			].map((f) => join(directory, f)),
-			...await getIgnoredFiles(directory),
-		);
-
-		const paths = (await fs.readdir(directory))
-			.map((f) => path.normalize(join(directory, f)))
-			.filter((p) => !picomatch.isMatch(p, ignores));
-
-		/** @type {string[]} */
-		const files = [];
-		/** @type {string[]} */
-		const directories = [];
-
-		for (const path of paths) {
-			if ((await fs.lstat(path)).isDirectory()) {
-				const subPaths = await this.getPaths(path, ignores);
-				directories.push(path, ...subPaths.directories);
-				files.push(...subPaths.files);
-			}
-			else {
-				files.push(path);
-			}
-		}
-
-		return {
-			files: files.map(p => path.normalize(p.replace(this.dir, './'))),
-			directories: directories.map(p => path.normalize(p.replace(this.dir, './'))),
-		};
-	}
-
-	/**
-	 * @returns {Promise<string[]>} - List of packages on a directory;
+	 * @returns {Promise<string[]>} - List of packages on a directory;.
 	 */
 	async getPackagePatterns() {
-
 		/** @type {string[]} */
-		let packagePatterns = [];
+		const packagePatterns = [];
 
 		const pnpmWorkspace =
 			existsSync(join(this.dir, 'pnpm-workspace.yaml'))
 				? 'pnpm-workspace.yaml'
-				: existsSync(join(this.dir, 'pnpm-workspace.yml'))
-					? 'pnpm-workspace.yml'
-					: null;
+				: (existsSync(join(this.dir, 'pnpm-workspace.yml'))
+						? 'pnpm-workspace.yml'
+						: null);
 
 		if (pnpmWorkspace) {
-			const pnpmWorkspaceYaml = await fs.readFile(join(this.dir, pnpmWorkspace), 'utf8');
+			const pnpmWorkspaceYaml = await fs.readFile(
+				join(this.dir, pnpmWorkspace),
+				'utf8',
+			);
 
 			/** @type {{packages?: string[]}} */
 			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-			const pnpmWorkspaceObj = YAML.parse(pnpmWorkspaceYaml);
+			const pnpmWorkspaceObject = YAML.parse(pnpmWorkspaceYaml);
 
-			packagePatterns.push(...(pnpmWorkspaceObj?.packages ?? []));
+			packagePatterns.push(...pnpmWorkspaceObject.packages ?? []);
 		}
 		else if (existsSync(join(this.dir, 'package.json'))) {
-			const packageJson = await fs.readFile(join(this.dir, 'package.json'), 'utf8');
+			const packageJson = await fs.readFile(
+				join(this.dir, 'package.json'),
+				'utf8',
+			);
 
 			/** @type {{workspaces?: string[]}} */
 			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-			const packageJsonObj = JSON.parse(packageJson);
+			const packageJsonObject = JSON.parse(packageJson);
 
-			packagePatterns.push(...(packageJsonObj?.workspaces ?? []));
+			packagePatterns.push(...packageJsonObject.workspaces ?? []);
 		}
 
-		return packagePatterns.map(p => {
+		return packagePatterns.map((p) => {
 			p = path.normalize(p);
 			p = p.startsWith('/') ? p.replace('/', '') : p;
-			p = p.endsWith('/') ? p.slice(0, p.length - 1) : p;
+			p = p.endsWith('/') ? p.slice(0, -1) : p;
 			return p;
 		});
 	}
 
 	/**
-	 * @returns {Promise<import('./types').Package[]>} - The list of packages that exist in the workspace
+	 * @returns {Promise<import('./types').Package[]>} -
+	 * The list of packages that exist in the workspace.
 	 */
 	async getPackages() {
-
 		const paths = await this.getPaths();
 
 		/** @type {import('./types').Package} */
 		const rootPackage = {
-			root: true,
+			directories: paths.directories,
+			files: paths.files,
 			name: await getPackageName(this.dir),
 			path: this.dir,
-			files: paths.files,
-			directories: paths.directories,
+			root: true,
 		};
 
 		if (this.packagePatterns === false) return [rootPackage];
 
-		const packagePatterns = this.packagePatterns ?? await this.getPackagePatterns();
-		const packagePaths = paths.directories.filter(d => picomatch.isMatch(d, packagePatterns));
+		const packagePatterns =
+			this.packagePatterns ??
+			await this.getPackagePatterns();
+
+		const packagePaths = paths.directories.filter(d =>
+			picomatch.isMatch(d, packagePatterns),
+		);
 
 		/** @type {import('./types').Package[]} */
 		const packages = [];
 
 		for (const packagePath of packagePaths) {
 			packages.push({
-				root: false,
-				path: join(this.dir, packagePath),
-				name: await getPackageName(join(this.dir, packagePath)),
-				files: paths.files
-					.filter(f => picomatch.isMatch(f, `${packagePath}/**/*`))
-					.map(f => f.replace(`${packagePath}/`, '')),
 				directories: paths.directories
 					.filter(d => picomatch.isMatch(d, `${packagePath}/**/*`))
 					.map(d => d.replace(`${packagePath}/`, '')),
+				files: paths.files
+					.filter(f => picomatch.isMatch(f, `${packagePath}/**/*`))
+					.map(f => f.replace(`${packagePath}/`, '')),
+				// eslint-disable-next-line no-await-in-loop
+				name: await getPackageName(join(this.dir, packagePath)),
+				path: join(this.dir, packagePath),
+				root: false,
 			});
 
 			rootPackage.files = rootPackage.files
@@ -195,51 +169,101 @@ export default class Workspace {
 		}
 
 		return [rootPackage, ...packages];
-
 	}
 
 	/**
-	 * @param {import('./types').Package[]} packages - Packages to be merged into root
-	 * @returns {[import('./types').Package]} A array containing only the root package
+	 * @param {string} [directory] - The directory to work on.
+	 * @param {string[]} [ignores] - Glob patterns to ignore.
+	 * @returns {Promise<{files: string[], directories: string[]}>} -
+	 * List of all files in the directory.
 	 */
-	mergePackages(packages) {
+	async getPaths(directory = this.dir, ignores = []) {
+		ignores.push(
+			...[
+				'.git',
+				'.dist',
+				'.DS_Store',
+				'node_modules',
+			].map(f => join(directory, f)),
+			...await getIgnoredFiles(directory),
+		);
 
+		const pathsUnfiltered = await fs.readdir(directory);
+		const paths = pathsUnfiltered
+			.map(f => path.normalize(join(directory, f)))
+			.filter(p => !picomatch.isMatch(p, ignores));
+
+		/** @type {string[]} */
+		const files = [];
+		/** @type {string[]} */
+		const directories = [];
+
+		for (const p of paths) {
+			// eslint-disable-next-line no-await-in-loop, unicorn/no-await-expression-member
+			if ((await fs.lstat(p)).isDirectory()) {
+				// eslint-disable-next-line no-await-in-loop
+				const subPaths = await this.getPaths(p, ignores);
+				directories.push(p, ...subPaths.directories);
+				files.push(...subPaths.files);
+			}
+			else {
+				files.push(p);
+			}
+		}
+
+		return {
+			directories: directories.map(p =>
+				path.normalize(p.replace(this.dir, './')),
+			),
+			files: files.map(p => path.normalize(p.replace(this.dir, './'))),
+		};
+	}
+
+	/**
+	 * @param {import('./types').Package[]} packages - Packages to be merged into root.
+	 * @returns {[import('./types').Package]} A array containing only the root package.
+	 */
+	static mergePackages(packages) {
 		const rootPackage = packages.find(p => p.root) ?? packages[0];
 
-		const merged = packages.reduce((accumulated, pkg) => {
-
+		// TODO [>=1.0.0]: Refactor this to remove the use of Array#reduce()
+		// eslint-disable-next-line unicorn/no-array-reduce
+		const merged = packages.reduce((accumulated, package_) => {
 			const files = [...new Set([
 				...accumulated.files,
-				...pkg.files.map(f => join(pkg.path, f)),
+				...package_.files.map(f => join(package_.path, f)),
 			]
 				.map(p => p.replace(`${rootPackage.path}/`, '')),
 			)];
 
 			const directories = [...new Set([
 				...accumulated.directories,
-				...pkg.directories.map(d => join(pkg.path, d)),
+				...package_.directories.map(d => join(package_.path, d)),
 			]
 				.map(p => p.replace(`${rootPackage.path}/`, ''))),
 			];
 
 			const mergedConfig = new Map();
-			for (const [config, options] of pkg.config ?? []) {
-				const accumulatedOptions = accumulated.config?.get(config) ?? [];
-				mergedConfig.set(config, [...new Set([...options, ...accumulatedOptions])]);
+			for (const [config, options] of package_.config ?? []) {
+				const accumulatedOptions =
+					accumulated.config?.get(config) ??
+					[];
+				mergedConfig.set(
+					config,
+					[...new Set([...options, ...accumulatedOptions])],
+				);
 			}
 
 			return {
-				root: true,
-				path: rootPackage.path,
-				name: rootPackage.name,
-				files,
-				directories,
 				config: mergedConfig,
+				directories,
+				files,
+				name: rootPackage.name,
+				path: rootPackage.path,
+				root: true,
 			};
 		}, rootPackage);
 
 		return [merged];
-
 	}
-
 }
diff --git a/packages/create-eslegant/bin.js b/packages/create-eslegant/bin.js
index b79fa75..327e087 100644
--- a/packages/create-eslegant/bin.js
+++ b/packages/create-eslegant/bin.js
@@ -1,4 +1,11 @@
+#!/usr/bin/env node
+import process from 'node:process';
+
 import Cli from '@eslegant/cli';
 
-const cli = new Cli({ configs: (await import('./configs.js')).default, dir: process.cwd() });
+const cli = new Cli({
+	// eslint-disable-next-line unicorn/no-await-expression-member
+	configs: (await import('./configs.js')).default,
+	dir: process.cwd(),
+});
 await cli.run();
diff --git a/packages/create-eslegant/configs.js b/packages/create-eslegant/configs.js
index f37cf57..7e7daff 100644
--- a/packages/create-eslegant/configs.js
+++ b/packages/create-eslegant/configs.js
@@ -2,33 +2,36 @@
 /** @type {import('@eslegant/cli').Config[]} */
 const cliConfig = [
 	{
-		name: 'framework',
-		type: 'multiple',
 		description: 'The UI frameworks being used in the project',
+		name: 'framework',
 		options: [
 			{
-				name: 'svelte',
-				packages: { 'svelte': 'svelte' },
 				configs: ['svelte.recommended'],
 				detect: ['**/*.svelte', 'svelte.config.{js,ts,cjs,cts}'],
+				name: 'svelte',
+				packages: { svelte: 'svelte' },
 			},
 			{
-				name: 'vue',
-				packages: { 'vue': ['vue', ['hello', 'world']], 'svelte': ['hello'] },
 				configs: ['vue.recommended'],
 				detect: ['nuxt.config.{js,ts,cjs,cts}', '**/*.vue'],
+				name: 'vue',
+				packages: {
+					svelte: ['hello'],
+					vue: ['vue', ['hello', 'world']],
+				},
 			},
 		],
+		type: 'multiple',
 	},
 	{
-		name: 'strict',
-		type: 'confirm',
 		manual: true,
+		name: 'strict',
 		options: [{
-			name: 'yes',
-			packages: { 'eslint': 'config', 'svelte': ['test1'] },
 			configs: ['config.strict'],
+			name: 'yes',
+			packages: { eslint: 'config', svelte: ['test1'] },
 		}],
+		type: 'confirm',
 	},
 ];
 export default cliConfig;
diff --git a/packages/create-eslegant/package.json b/packages/create-eslegant/package.json
index 0a105b2..a36d0f2 100644
--- a/packages/create-eslegant/package.json
+++ b/packages/create-eslegant/package.json
@@ -9,8 +9,8 @@
 		"url": "https://guz.one"
 	},
 	"files": [
-		"./bin.js",
-		"./configs.js"
+		"bin.js",
+		"configs.js"
 	],
 	"dependencies": {
 		"@eslegant/cli": "workspace:*"
diff --git a/packages/eslegant/bin.js b/packages/eslegant/bin.js
index b79fa75..327e087 100755
--- a/packages/eslegant/bin.js
+++ b/packages/eslegant/bin.js
@@ -1,4 +1,11 @@
+#!/usr/bin/env node
+import process from 'node:process';
+
 import Cli from '@eslegant/cli';
 
-const cli = new Cli({ configs: (await import('./configs.js')).default, dir: process.cwd() });
+const cli = new Cli({
+	// eslint-disable-next-line unicorn/no-await-expression-member
+	configs: (await import('./configs.js')).default,
+	dir: process.cwd(),
+});
 await cli.run();
diff --git a/packages/eslegant/configs.js b/packages/eslegant/configs.js
index f37cf57..7e7daff 100644
--- a/packages/eslegant/configs.js
+++ b/packages/eslegant/configs.js
@@ -2,33 +2,36 @@
 /** @type {import('@eslegant/cli').Config[]} */
 const cliConfig = [
 	{
-		name: 'framework',
-		type: 'multiple',
 		description: 'The UI frameworks being used in the project',
+		name: 'framework',
 		options: [
 			{
-				name: 'svelte',
-				packages: { 'svelte': 'svelte' },
 				configs: ['svelte.recommended'],
 				detect: ['**/*.svelte', 'svelte.config.{js,ts,cjs,cts}'],
+				name: 'svelte',
+				packages: { svelte: 'svelte' },
 			},
 			{
-				name: 'vue',
-				packages: { 'vue': ['vue', ['hello', 'world']], 'svelte': ['hello'] },
 				configs: ['vue.recommended'],
 				detect: ['nuxt.config.{js,ts,cjs,cts}', '**/*.vue'],
+				name: 'vue',
+				packages: {
+					svelte: ['hello'],
+					vue: ['vue', ['hello', 'world']],
+				},
 			},
 		],
+		type: 'multiple',
 	},
 	{
-		name: 'strict',
-		type: 'confirm',
 		manual: true,
+		name: 'strict',
 		options: [{
-			name: 'yes',
-			packages: { 'eslint': 'config', 'svelte': ['test1'] },
 			configs: ['config.strict'],
+			name: 'yes',
+			packages: { eslint: 'config', svelte: ['test1'] },
 		}],
+		type: 'confirm',
 	},
 ];
 export default cliConfig;
diff --git a/packages/eslegant/package.json b/packages/eslegant/package.json
index 346743f..720d729 100644
--- a/packages/eslegant/package.json
+++ b/packages/eslegant/package.json
@@ -9,8 +9,8 @@
 		"url": "https://guz.one"
 	},
 	"files": [
-		"./bin.js",
-		"./configs.js"
+		"bin.js",
+		"configs.js"
 	],
 	"dependencies": {
 		"@eslegant/cli": "workspace:*"