//  of an assignment."
	//
	// Example:
	//  var x = _
	InvalidBlank

	// InvalidIota occurs when the predeclared identifier iota is used outside
	// of a constant declaration.
	//
	// Example:
	//  var x = iota
	InvalidIota

	// MissingInitBody occurs when an init function is missing its body.
	//
	// Example:
	//  func init()
	MissingInitBody

	gcPtr *ref      // used to trigger the finalizer when the Value is not referenced any more
}

const (
	// the type flags need to be in sync with wasm_exec.js
	typeFlagNone = iota
	typeFlagObject
	typeFlagString
	typeFlagSymbol
	typeFlagFunction
)

func makeValue(r ref) Value {
	var gcPtr *ref
	typeFlag := (r >> 32) & 7
	if (r>>32)&nanHead == nanHead && typeFlag != typeFlagNone {

	sort.Strings(out)
	keep := out[:0]
	for _, x := range out {
		if len(keep) == 0 || keep[len(keep)-1] != x {
			keep = append(keep, x)
		}
	}
	return keep
}

const (
	CheckExit = 1 << iota
	ShowOutput
	Background
)

var outputLock sync.Mutex

// run is like runEnv with no additional environment.
func run(dir string, mode int, cmd ...string) string {
	return runEnv(dir, mode, nil, cmd...)
}

		// case of constants and iota.
		if vspec.Type != nil {
			typ = vspec.Type
		}

		for _, ident := range vspec.Names {
			if showSrc || isExported(ident.Name) {
				if vspec.Type == nil && vspec.Values == nil && typ != nil {
					// This a standalone identifier, as in the case of iota usage.
					// Thus, assume the type comes from the previous type.

}

// CanonType can be used to enable or disable various types of canonicalization.
type CanonType int

const (
	// Replace deprecated base languages with their preferred replacements.
	DeprecatedBase CanonType = 1 << iota
	// Replace deprecated scripts with their preferred replacements.
	DeprecatedScript
	// Replace deprecated regions with their preferred replacements.
	DeprecatedRegion
	// Remove redundant scripts.
	SuppressScript

// The cached value is a uint32 in which the low bits
// are the "crash" and "all" settings and the remaining
// bits are the traceback value (0 off, 1 on, 2 include system).
const (
	tracebackCrash = 1 << iota
	tracebackAll
	tracebackShift = iota
)

var traceback_cache uint32 = 2 << tracebackShift
var traceback_env uint32

// gotraceback returns the current traceback settings.
//
// If level is 0, suppress all tracebacks.

		return nil
	}

	return r.execSeqs(data, off, litbuf, seqCount)
}

// seqCode is the kind of sequence codes we have to handle.
type seqCode int

const (
	seqLiteral seqCode = iota
	seqOffset
	seqMatch
)

// seqCodeInfoData is the information needed to set up seqTables and
// seqTableBits for a particular kind of sequence code.
type seqCodeInfoData struct {

	metrics[name] = d
	metricsUnlock()
}

// statDep is a dependency on a group of statistics
// that a metric might have.
type statDep uint

const (
	heapStatsDep statDep = iota // corresponds to heapStatsAggregate
	sysStatsDep                 // corresponds to sysStatsAggregate
	cpuStatsDep                 // corresponds to cpuStatsAggregate
	gcStatsDep                  // corresponds to gcStatsAggregate

	fin     [(_FinBlockSize - 2*goarch.PtrSize - 2*4) / unsafe.Sizeof(finalizer{})]finalizer
}

var fingStatus atomic.Uint32

// finalizer goroutine status.
const (
	fingUninitialized uint32 = iota
	fingCreated       uint32 = 1 << (iota - 1)
	fingRunningFinalizer
	fingWait
	fingWake
)

var finlock mutex  // protects the following variables
var fing *g        // goroutine that runs finalizers

	"errors"
	"fmt"
)

// QUICEncryptionLevel represents a QUIC encryption level used to transmit
// handshake messages.
type QUICEncryptionLevel int

const (
	QUICEncryptionLevelInitial = QUICEncryptionLevel(iota)
	QUICEncryptionLevelEarly
	QUICEncryptionLevelHandshake
	QUICEncryptionLevelApplication
)

func (l QUICEncryptionLevel) String() string {
	switch l {
	case QUICEncryptionLevelInitial:
		return "Initial"