Function write

lib/internal/vfs/setup.js:423–428

(fd, buffer, offset, length, position)

        .then(({ bytesRead }) => bytesRead);
    },
    write(fd, buffer, offset, length, position) {
      const vfd = getVirtualFd(fd);
      if (!vfd) return undefined;
      return vfd.entry.write(buffer, offset, length, position)
        .then(({ bytesWritten }) => bytesWritten);
    },
    fstat(fd, options) {
      const vfd = getVirtualFd(fd);
      if (!vfd) return undefined;