Первая версия

src/core/PathUtils.js

@@ -0,0 +1,25 @@
+export class PathUtils {
+  static normalizeRelative(path) {
+    if (!path || path.startsWith("/") || path.includes("\\")) {
+      throw new Error("Invalid path format");
+    }
+    const parts = path.split("/");
+    const out = [];
+    for (const part of parts) {
+      if (!part || part === ".") continue;
+      if (part === "..") throw new Error("Path traversal is forbidden");
+      out.push(part);
+    }
+    return out.join("/");
+  }
+
+  static dirname(path) {
+    const index = path.lastIndexOf("/");
+    return index === -1 ? "" : path.slice(0, index);
+  }
+
+  static basename(path) {
+    const index = path.lastIndexOf("/");
+    return index === -1 ? path : path.slice(index + 1);
+  }
+}