Method assertContained

src/node/services/memoryService.ts:272–272

* Symlink-escape prevention: realpath the deepest existing ancestor of the * target and require it to stay inside the (realpathed) root. Throws on escape.

(relPath: string)

   * target and require it to stay inside the (realpathed) root. Throws on escape.
   */
  assertContained(relPath: string): Promise<void>;
}

function isPathWithinRoot(