fix(ConfigManager): Resolve ESM import exception on Windows

src/linter/linter.ts

@@ -14,6 +14,9 @@ import {Minimatch} from "minimatch";
 export async function lintProject({
 	rootDir, filePatterns, ignorePatterns, coverage, details, configPath, ui5Config, noConfig,
 }: LinterOptions): Promise<LintResult[]> {
+	if (!path.isAbsolute(rootDir)) {
+		throw new Error(`rootDir must be an absolute path. Received: ${rootDir}`);
+	}
 	let config: UI5LintConfigType = {};
 	if (noConfig !== true) {
 		const configMngr = new ConfigManager(rootDir, configPath);

src/utils/ConfigManager.ts

@@ -28,12 +28,9 @@ export default class ConfigManager {
 	}
 
 	#resolveModulePaths(fileName: string): string {
-		// Node on Windows behaves strange, does not work with absolute paths
-		// and modifies files extensions in tests i.e. js -> ts, mjs -> tjs
+		// Node on Windows behaves strange,it modifies files extensions in tests i.e. js -> ts, mjs -> tjs
 		// Keeping the relative path in POSIX format resolves those issues.
-		return path.posix.join(
-			path.relative(__dirname, this.#projectRootDir).replaceAll(path.win32.sep, path.posix.sep),
-			fileName);
+		return path.join(this.#projectRootDir, fileName);
 	}
 
 	async getConfiguration(): Promise<UI5LintConfigType> {