Method #ensurePopulated

lib/internal/vfs/providers/memory.js:460–492

* Ensures a directory is populated by calling its populate callback if needed. * @param {MemoryEntry} entry The directory entry * @param {string} path The directory path (for error messages and scoped VFS)

(entry, path)

   * @param {string} path The directory path (for error messages and scoped VFS)
   */
  #ensurePopulated(entry, path) {
    if (entry.isDirectory() && !entry.populated && entry.populate) {
      // Create a scoped VFS for the populate callback
      const scopedVfs = {
        addFile: (name, content, opts) => {
          const fileEntry = new MemoryEntry(TYPE_FILE, opts);
          if (typeof content === 'function') {
            fileEntry.content = Buffer.alloc(0);
            fileEntry.contentProvider = content;
          } else {
            fileEntry.content = typeof content === 'string' ? Buffer.from(content) : content;
          }
          entry.children.set(name, fileEntry);
        },
        addDirectory: (name, populate, opts) => {
          const dirEntry = new MemoryEntry(TYPE_DIR, opts);
          dirEntry.children = new SafeMap();
          if (typeof populate === 'function') {
            dirEntry.populate = populate;
            dirEntry.populated = false;
          }
          entry.children.set(name, dirEntry);
        },
        addSymlink: (name, target, opts) => {
          const symlinkEntry = new MemoryEntry(TYPE_SYMLINK, opts);
          symlinkEntry.target = target;
          entry.children.set(name, symlinkEntry);
        },
      };
      entry.populate(scopedVfs);
      entry.populated = true;
    }
  }

  openSync(path, flags, mode) {
    const normalized = this.#normalizePath(path);