func TestDecoderSimple(t *testing.T) {
	var (
		counter int
		mv      *MetaValue
		body    = `[{"bio":"bada bing bada boom","id":1,"name":"Charles","falseVal":false}]`
	)

	decoder := NewDecoder(mkReader(body), 1)

	for mv = range decoder.Stream() {
		counter++
		t.Logf("depth=%d offset=%d len=%d (%v)", mv.Depth, mv.Offset, mv.Length, mv.Value)
	}

	if err := decoder.Err(); err != nil {

<img width="85%" src="https://bradley.codes/static/img/jstream-levels.gif" alt="jstream"/>

we can choose to extract and act only the objects within the top-level array:
```go
f, _ := os.Open("input.json")
decoder := jstream.NewDecoder(f, 1) // extract JSON values at a depth level of 1
for mv := range decoder.Stream() {
  fmt.Printf("%v\n ", mv.Value)
}
```

output:
```
map[desc:RGB colors:[red green blue]]

	if key.Compress {
		decodedBytes, err := s2.Decode(nil, raw)
		if err != nil {
			return nil, err
		}
		decoder = jsoniter.ConfigCompatibleWithStandardLibrary.NewDecoder(bytes.NewReader(decodedBytes))
	} else {
		decoder = jsoniter.ConfigCompatibleWithStandardLibrary.NewDecoder(bytes.NewReader(raw))
	}

	for decoder.More() {
		var item I
		if err := decoder.Decode(&item); err != nil {
			return nil, err
		}

	respBody, err := client.callWithContext(ctx, peerRESTMethodDownloadProfilingData, nil, nil, -1)
	if err != nil {
		return
	}
	defer xhttp.DrainBody(respBody)
	err = gob.NewDecoder(respBody).Decode(&data)
	return data, err
}

// GetBucketStats - load bucket statistics
func (client *peerRESTClient) GetBucketStats(ctx context.Context, bucket string) (BucketStats, error) {

// keys, so we need to use this technique to merge the
// keys.
func sanitizePolicy(r io.Reader) (io.Reader, error) {
	var buf bytes.Buffer
	e := json.NewEncoder(&buf)
	d := jstream.NewDecoder(r, 0).ObjectAsKVS().MaxDepth(10)
	sset := set.NewStringSet()
	for mv := range d.Stream() {
		var kvs jstream.KVS
		if mv.ValueType == jstream.Object {
			// This is a JSON object type (that preserves key order)

	"path/filepath"
	"reflect"
	"testing"

	"github.com/alecthomas/participle"
	"github.com/minio/minio/internal/s3select/jstream"
)

func getJSONStructs(b []byte) ([]interface{}, error) {
	dec := jstream.NewDecoder(bytes.NewBuffer(b), 0).ObjectAsKVS().MaxDepth(100)
	var result []interface{}
	for parsedVal := range dec.Stream() {
		result = append(result, parsedVal.Value)
	}
	if err := dec.Err(); err != nil {
		return nil, err

)

type publicKeys struct {
	*sync.RWMutex

	// map of kid to public key
	pkMap map[string]interface{}
}

func (pk *publicKeys) parseAndAdd(b io.Reader) error {
	var jwk JWKS
	err := json.NewDecoder(b).Decode(&jwk)
	if err != nil {
		return err
	}

	for _, key := range jwk.Keys {
		pkey, err := key.DecodePublicKey()
		if err != nil {
			return err
		}
		pk.add(key.Kid, pkey)
	}

	}
	return err
}

// NewReader - creates new JSON reader using readCloser.
func NewReader(readCloser io.ReadCloser, args *ReaderArgs) *Reader {
	readCloser = &syncReadCloser{rc: readCloser}
	d := jstream.NewDecoder(io.LimitReader(readCloser, maxDocumentSize), 0).ObjectAsKVS().MaxDepth(100)
	return &Reader{
		args:       args,
		decoder:    d,
		valueCh:    d.Stream(),
		readCloser: readCloser,
	}
}

	resp, err := c.Info(
		c.Info.WithContext(ctx),
	)
	if err != nil {
		return ESSUnknown, "", store.ErrNotConnected
	}

	defer resp.Body.Close()

	m := make(map[string]interface{})
	err = json.NewDecoder(resp.Body).Decode(&m)
	if err != nil {
		return ESSUnknown, "", fmt.Errorf("unable to get ES Server version - json parse error: %v", err)
	}

	if v, ok := m["version"].(map[string]interface{}); ok {

	err     error

	// follow line position to add context to errors
	lineNo    int
	lineStart int64
}

// NewDecoder creates new Decoder to read JSON values at the provided
// emitDepth from the provider io.Reader.
// If emitDepth is < 0, values at every depth will be emitted.
func NewDecoder(r io.Reader, emitDepth int) *Decoder {
	d := &Decoder{
		scanner:   newScanner(r),
		emitDepth: emitDepth,