diff --git a/dist/js/server/file.d.ts b/dist/js/server/file.d.ts
index 4c183c7..18e27f8 100644
--- a/dist/js/server/file.d.ts
+++ b/dist/js/server/file.d.ts
@@ -1,43 +1,42 @@
 /**
  * @summary Identifies language by file extension. Uses 'fortran' by default.
- * @param filename {String}
- * @param defaultLanguage {String}
  */
-export function getProgrammingLanguageFromFileExtension(
+export declare function getProgrammingLanguageFromFileExtension(
     filename: string,
     defaultLanguage?: string,
-): any;
+): string;
 /**
  * @summary Formats a given file size.
- * @param size {Number} file size.
- * @param decimals {Number} number of decimals to round.
+ * @param size file size.
+ * @param decimals number of decimals to round.
  */
-export function formatFileSize(size: number, decimals?: number): string;
+export declare function formatFileSize(size: number, decimals?: number): string;
 /** Get list of paths for files in a directory and filter by file extensions if provided.
- * @param {string} dirPath - Path to current directory, i.e. $PWD
- * @param {string[]} fileExtensions - File extensions to filter, e.g. `.yml`
- * @param {boolean} resolvePath - whether to resolve the paths of files
- * @returns {string[]} - Array of file paths
+ * @param dirPath - Path to current directory, i.e. $PWD
+ * @param fileExtensions - File extensions to filter, e.g. `.yml`
+ * @param resolvePath - whether to resolve the paths of files
+ * @returns - Array of file paths
  */
-export function getFilesInDirectory(
+export declare function getFilesInDirectory(
     dirPath: string,
     fileExtensions?: string[],
     resolvePath?: boolean,
 ): string[];
 /**
  * Get list of directories contained in current directory.
- * @param {string} currentPath - current directory
- * @return {*}
+ * @param currentPath - current directory
  */
-export function getDirectories(currentPath: string): any;
+export declare function getDirectories(currentPath: string): string[];
 /**
  * Construct object path compatible with lodash.get/lodash.set from file path.
  * Note: if no root path is provided the file's dirname is taken instead.
- * @param {string} filePath - Path to file.
- * @param {string} root - Path to a parent directory to construct relative path.
- * @return {string} - Object path reflecting file path.
+ * @param filePath - Path to file.
+ * @param root - Path to a parent directory to construct relative path.
+ * @return - Object path reflecting file path.
  * @example
  * createObjectPathFromFilePath("/a/b/c/d/e.yml", "/a/b");
  * // "['c']['d']['e']"
  */
-export function createObjectPathFromFilePath(filePath: string, root: string): string;
+export declare function createObjectPathFromFilePath(filePath: string, root: string): string;
+export declare function createDirIfNotExists(directory: string): Promise<void>;
+export declare function cleanDirectory(directory: string): Promise<void>;
diff --git a/dist/js/server/file.js b/dist/js/server/file.js
index e04fe12..a130c77 100644
--- a/dist/js/server/file.js
+++ b/dist/js/server/file.js
@@ -5,14 +5,17 @@ var __importDefault =
         return mod && mod.__esModule ? mod : { default: mod };
     };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.createObjectPathFromFilePath =
+exports.cleanDirectory =
+    exports.createDirIfNotExists =
+    exports.createObjectPathFromFilePath =
     exports.getDirectories =
     exports.getFilesInDirectory =
     exports.formatFileSize =
     exports.getProgrammingLanguageFromFileExtension =
         void 0;
 const fs_1 = __importDefault(require("fs"));
-const path_1 = __importDefault(require("path"));
+const promises_1 = require("node:fs/promises");
+const node_path_1 = __importDefault(require("node:path"));
 const FILE_EXTENSION_TO_PROGRAMMING_LANGUAGE_MAP = {
     in: "fortran",
     sh: "shell",
@@ -23,18 +26,21 @@ const FILE_EXTENSION_TO_PROGRAMMING_LANGUAGE_MAP = {
 };
 /**
  * @summary Identifies language by file extension. Uses 'fortran' by default.
- * @param filename {String}
- * @param defaultLanguage {String}
  */
 function getProgrammingLanguageFromFileExtension(filename, defaultLanguage = "fortran") {
-    const fileExt = filename.split(".").pop().toLowerCase();
+    var _a;
+    const fileExt =
+        (_a = filename.split(".").pop()) === null || _a === void 0 ? void 0 : _a.toLowerCase();
+    if (!fileExt) {
+        return defaultLanguage;
+    }
     return FILE_EXTENSION_TO_PROGRAMMING_LANGUAGE_MAP[fileExt] || defaultLanguage;
 }
 exports.getProgrammingLanguageFromFileExtension = getProgrammingLanguageFromFileExtension;
 /**
  * @summary Formats a given file size.
- * @param size {Number} file size.
- * @param decimals {Number} number of decimals to round.
+ * @param size file size.
+ * @param decimals number of decimals to round.
  */
 function formatFileSize(size, decimals = 2) {
     if (size === 0) return "0 Bytes";
@@ -44,26 +50,26 @@ function formatFileSize(size, decimals = 2) {
 }
 exports.formatFileSize = formatFileSize;
 /** Get list of paths for files in a directory and filter by file extensions if provided.
- * @param {string} dirPath - Path to current directory, i.e. $PWD
- * @param {string[]} fileExtensions - File extensions to filter, e.g. `.yml`
- * @param {boolean} resolvePath - whether to resolve the paths of files
- * @returns {string[]} - Array of file paths
+ * @param dirPath - Path to current directory, i.e. $PWD
+ * @param fileExtensions - File extensions to filter, e.g. `.yml`
+ * @param resolvePath - whether to resolve the paths of files
+ * @returns - Array of file paths
  */
 function getFilesInDirectory(dirPath, fileExtensions = [], resolvePath = true) {
     let fileNames = fs_1.default.readdirSync(dirPath);
     if (fileExtensions.length) {
         fileNames = fileNames.filter((dirItem) =>
-            fileExtensions.includes(path_1.default.extname(dirItem)),
+            fileExtensions.includes(node_path_1.default.extname(dirItem)),
         );
     }
-    if (resolvePath) return fileNames.map((fileName) => path_1.default.resolve(dirPath, fileName));
+    if (resolvePath)
+        return fileNames.map((fileName) => node_path_1.default.resolve(dirPath, fileName));
     return fileNames;
 }
 exports.getFilesInDirectory = getFilesInDirectory;
 /**
  * Get list of directories contained in current directory.
- * @param {string} currentPath - current directory
- * @return {*}
+ * @param currentPath - current directory
  */
 function getDirectories(currentPath) {
     return fs_1.default
@@ -75,18 +81,45 @@ exports.getDirectories = getDirectories;
 /**
  * Construct object path compatible with lodash.get/lodash.set from file path.
  * Note: if no root path is provided the file's dirname is taken instead.
- * @param {string} filePath - Path to file.
- * @param {string} root - Path to a parent directory to construct relative path.
- * @return {string} - Object path reflecting file path.
+ * @param filePath - Path to file.
+ * @param root - Path to a parent directory to construct relative path.
+ * @return - Object path reflecting file path.
  * @example
  * createObjectPathFromFilePath("/a/b/c/d/e.yml", "/a/b");
  * // "['c']['d']['e']"
  */
 function createObjectPathFromFilePath(filePath, root) {
-    const dirname = path_1.default.dirname(filePath);
-    const extension = path_1.default.extname(filePath);
-    const basename = path_1.default.basename(filePath, extension);
-    const parentDirs = root ? path_1.default.relative(root, dirname).split(path_1.default.sep) : [];
+    const dirname = node_path_1.default.dirname(filePath);
+    const extension = node_path_1.default.extname(filePath);
+    const basename = node_path_1.default.basename(filePath, extension);
+    const parentDirs = root
+        ? node_path_1.default.relative(root, dirname).split(node_path_1.default.sep)
+        : [];
     return [...parentDirs, basename].map((item) => `['${item}']`).join("");
 }
 exports.createObjectPathFromFilePath = createObjectPathFromFilePath;
+async function createDirIfNotExists(directory) {
+    try {
+        await (0, promises_1.access)(directory);
+    } catch (err) {
+        await (0, promises_1.mkdir)(directory, { recursive: true });
+    }
+}
+exports.createDirIfNotExists = createDirIfNotExists;
+async function cleanDirectory(directory) {
+    const files = await (0, promises_1.readdir)(directory, { withFileTypes: true });
+    for (let i = 0; i < files.length; i++) {
+        const file = files[i];
+        if (file.isDirectory()) {
+            // eslint-disable-next-line no-await-in-loop
+            await (0, promises_1.rm)(node_path_1.default.join(directory, file.name), {
+                recursive: true,
+                force: true,
+            });
+        } else {
+            // eslint-disable-next-line no-await-in-loop
+            await (0, promises_1.rm)(node_path_1.default.join(directory, file.name));
+        }
+    }
+}
+exports.cleanDirectory = cleanDirectory;