var buf bytes.Buffer
	zw := gzip.NewWriter(&buf)

	// Setting the Header fields is optional.
	zw.Name = "a-new-hope.txt"
	zw.Comment = "an epic space opera by George Lucas"
	zw.ModTime = time.Date(1977, time.May, 25, 0, 0, 0, 0, time.UTC)

	_, err := zw.Write([]byte("A long time ago in a galaxy far, far away..."))
	if err != nil {
		log.Fatal(err)
	}

	if err := zw.Close(); err != nil {
		log.Fatal(err)
	}

	var b bytes.Buffer
	buf := make([]byte, 32<<10)

	zw, err := flate.NewWriter(nil, flate.DefaultCompression)
	if err != nil {
		log.Fatal(err)
	}
	zr := flate.NewReader(nil)

	for _, s := range proverbs {
		r.Reset(s)
		b.Reset()

		// Reset the compressor and encode from some input stream.
		zw.Reset(&b)
		if _, err := io.CopyBuffer(zw, &r, buf); err != nil {
			log.Fatal(err)
		}

	// on next Close calls.
	var b bytes.Buffer
	zw.Reset(&b)
	err = zw.Close()
	if err != nil {
		t.Fatalf("First call to close returned error: %s", err)
	}
	err = zw.Close()
	if err != nil {
		t.Fatalf("Second call to close returned error: %s", err)
	}

	flushErr = zw.Flush()
	_, writeErr = zw.Write([]byte("Test"))
	checkErrors([]error{flushErr, writeErr}, errWriterClosed, t)
}

func main() {
	log.SetPrefix("mkzip: ")
	log.SetFlags(0)
	flag.Usage = usage
	flag.Parse()
	args := flag.Args()
	if len(args) != 1 || !strings.HasSuffix(args[0], ".zip") {
		usage()
	}

	var zb bytes.Buffer
	zw := zip.NewWriter(&zb)
	seen := make(map[string]bool)
	err := filepath.WalkDir(".", func(path string, d fs.DirEntry, err error) error {
		if d.IsDir() {
			return nil
		}
		data, err := os.ReadFile(path)

			log.Fatalf("writing %s%s: %v", name, extra, err)
		}
	}()

	zw := zip.NewWriter(out)
	zw.RegisterCompressor(zip.Deflate, func(out io.Writer) (io.WriteCloser, error) {
		return flate.NewWriter(out, flate.BestCompression)
	})
	for _, f = range a.Files {
		h := check(zip.FileInfoHeader(f.Info()))
		h.Name = f.Name
		h.Method = zip.Deflate
		w := check(zw.CreateHeader(h))
		r := check(os.Open(f.Src))
		check(io.Copy(w, r))

	// We'll (arbitrarily) choose the base of the remote path.
	basePath := path.Join(path.Base(remote), subdir)

	zw := zip.NewWriter(dst)
	for _, e := range list.Entries {
		if e.Kind != "file" {
			continue
		}

		zf, err := zw.Create(path.Join(basePath, e.Name))
		if err != nil {
			return err
		}

		f, err := os.Open(filepath.Join(exportDir, e.Name))
		if err != nil {

	return filter
}

func (e *encoder) writeImage(w io.Writer, m image.Image, cb int, level int) error {
	if e.zw == nil || e.zwLevel != level {
		zw, err := zlib.NewWriterLevel(w, level)
		if err != nil {
			return err
		}
		e.zw = zw
		e.zwLevel = level
	} else {
		e.zw.Reset(w)
	}
	defer e.zw.Close()

	bitsPerPixel := 0

	switch cb {
	case cbG8:
		bitsPerPixel = 8
	case cbTC8:

		t.Fatal(err)
	}
	return buf.Bytes()
}

func createGZ(t *testing.T, b []byte) []byte {
	t.Helper()
	var buf bytes.Buffer
	zw := gzip.NewWriter(&buf)
	if _, err := zw.Write(b); err != nil {
		t.Fatal(err)
	}

	if err := zw.Close(); err != nil {
		t.Fatal(err)
	}

	return buf.Bytes()
}

func TestWasmHTTPFetchCompressedOrTarFile(t *testing.T) {

// by calling b.addCPUData, and then the eventual profile
// can be obtained by calling b.finish.
func newProfileBuilder(w io.Writer) *profileBuilder {
	zw, _ := gzip.NewWriterLevel(w, gzip.BestSpeed)
	b := &profileBuilder{
		w:         w,
		zw:        zw,
		start:     time.Now(),
		strings:   []string{""},
		stringMap: map[string]int{"": 0},
		locs:      map[uintptr]locInfo{},
		funcs:     map[string]int{},
	}

// same dictionary.
func NewWriterDict(w io.Writer, level int, dict []byte) (*Writer, error) {
	dw := &dictWriter{w}
	zw, err := NewWriter(dw, level)
	if err != nil {
		return nil, err
	}
	zw.d.fillWindow(dict)
	zw.dict = append(zw.dict, dict...) // duplicate dictionary for Reset method.
	return zw, err
}

type dictWriter struct {
	w io.Writer
}

func (w *dictWriter) Write(b []byte) (n int, err error) {