var BuiltInNodeModules = map[string]bool{
	"_http_agent":         true,
	"_http_client":        true,
	"_http_common":        true,
	"_http_incoming":      true,
	"_http_outgoing":      true,
	"_http_server":        true,
	"_stream_duplex":      true,
	"_stream_passthrough": true,
	"_stream_readable":    true,
	"_stream_transform":   true,
	"_stream_wrap":        true,
	"_stream_writable":    true,
	"_tls_common":         true,
	"_tls_wrap":           true,
	"assert":              true,
	"assert/strict":       true,
	"async_hooks":         true,
	"buffer":              true,
	"child_process":       true,
	"cluster":             true,
	"console":             true,
	"constants":           true,
	"crypto":              true,
	"dgram":               true,
	"diagnostics_channel": true,
	"dns":                 true,
	"dns/promises":        true,
	"domain":              true,
	"events":              true,
	"fs":                  true,
	"fs/promises":         true,
	"http":                true,
	"http2":               true,
	"https":               true,
	"inspector":           true,
	"module":              true,
	"net":                 true,
	"os":                  true,
	"path":                true,
	"path/posix":          true,
	"path/win32":          true,
	"perf_hooks":          true,
	"process":             true,
	"punycode":            true,
	"querystring":         true,
	"readline":            true,
	"repl":                true,
	"stream":              true,
	"stream/consumers":    true,
	"stream/promises":     true,
	"stream/web":          true,
	"string_decoder":      true,
	"sys":                 true,
	"timers":              true,
	"timers/promises":     true,
	"tls":                 true,
	"trace_events":        true,
	"tty":                 true,
	"url":                 true,
	"util":                true,
	"util/types":          true,
	"v8":                  true,
	"vm":                  true,
	"wasi":                true,
	"worker_threads":      true,
	"zlib":                true,
}

type DataURL struct {
	// contains filtered or unexported fields
}

type DebugMeta struct {
	// contains filtered or unexported fields
}

type MIMEType uint8

const (
	MIMETypeUnsupported MIMEType = iota
	MIMETypeTextCSS
	MIMETypeTextJavaScript
	MIMETypeApplicationJSON
)

type PathPair struct {
	// Either secondary will be empty, or primary will be "module" and secondary
	// will be "main"
	Primary   logger.Path
	Secondary logger.Path
}

type ResolveResult struct {
	PathPair PathPair

	// If this was resolved by a plugin, the plugin gets to store its data here
	PluginData interface{}

	// If not empty, these should override the default values
	JSXFactory      []string // Default if empty: "React.createElement"
	JSXFragment     []string // Default if empty: "React.Fragment"
	JSXImportSource string   // Default if empty: "react"
	JSX             config.TSJSX

	DifferentCase *fs.DifferentCase

	// If present, any ES6 imports to this file can be considered to have no side
	// effects. This means they should be removed if unused.
	PrimarySideEffectsData *SideEffectsData

	// These are from "tsconfig.json"
	TSTarget       *config.TSTarget
	TSAlwaysStrict *config.TSAlwaysStrict

	// This is the "type" field from "package.json"
	ModuleTypeData js_ast.ModuleTypeData

	IsExternal bool

	// If true, the class field transform should use Object.defineProperty().
	UseDefineForClassFieldsTS config.MaybeBool

	// This is the "importsNotUsedAsValues" and "preserveValueImports" fields from "package.json"
	UnusedImportFlagsTS config.UnusedImportFlagsTS
}

type Resolver interface {
	Resolve(sourceDir string, importPath string, kind ast.ImportKind) (result *ResolveResult, debug DebugMeta)
	ResolveAbs(absPath string) *ResolveResult
	PrettyPath(path logger.Path) string

	// This tries to run "Resolve" on a package path as a relative path. If
	// successful, the user just forgot a leading "./" in front of the path.
	ProbeResolvePackageAsRelative(sourceDir string, importPath string, kind ast.ImportKind) *ResolveResult
}

type SideEffectsData struct {
	Source *logger.Source

	// If non-empty, this false value came from a plugin
	PluginName string

	Range logger.Range

	// If true, "sideEffects" was an array. If false, "sideEffects" was false.
	IsSideEffectsArrayInJSON bool
}

type TSConfigJSON struct {
	AbsPath string

	// The absolute path of "compilerOptions.baseUrl"
	BaseURL *string

	// This is used if "Paths" is non-nil. It's equal to "BaseURL" except if
	// "BaseURL" is missing, in which case it is as if "BaseURL" was ".". This
	// is to implement the "paths without baseUrl" feature from TypeScript 4.1.
	// More info: https://github.com/microsoft/TypeScript/issues/31869
	BaseURLForPaths string

	// The verbatim values of "compilerOptions.paths". The keys are patterns to
	// match and the values are arrays of fallback paths to search. Each key and
	// each fallback path can optionally have a single "*" wildcard character.
	// If both the key and the value have a wildcard, the substring matched by
	// the wildcard is substituted into the fallback path. The keys represent
	// module-style path names and the fallback paths are relative to the
	// "baseUrl" value in the "tsconfig.json" file.
	Paths *TSConfigPaths

	TSTarget                       *config.TSTarget
	TSStrict                       *config.TSAlwaysStrict
	TSAlwaysStrict                 *config.TSAlwaysStrict
	JSX                            config.TSJSX
	JSXFactory                     []string
	JSXFragmentFactory             []string
	JSXImportSource                string
	ModuleSuffixes                 []string
	UseDefineForClassFields        config.MaybeBool
	PreserveImportsNotUsedAsValues bool
	PreserveValueImports           bool
}

type TSConfigPath struct {
	Text string
	Loc  logger.Loc
}

type TSConfigPaths struct {
	Map map[string][]TSConfigPath

	// This may be different from the original "tsconfig.json" source if the
	// "paths" value is from another file via an "extends" clause.
	Source logger.Source
}