var BuiltInNodeModules = map[string]bool{
	"assert":         true,
	"async_hooks":    true,
	"buffer":         true,
	"child_process":  true,
	"cluster":        true,
	"console":        true,
	"constants":      true,
	"crypto":         true,
	"dgram":          true,
	"dns":            true,
	"domain":         true,
	"events":         true,
	"fs":             true,
	"http":           true,
	"http2":          true,
	"https":          true,
	"inspector":      true,
	"module":         true,
	"net":            true,
	"os":             true,
	"path":           true,
	"perf_hooks":     true,
	"process":        true,
	"punycode":       true,
	"querystring":    true,
	"readline":       true,
	"repl":           true,
	"stream":         true,
	"string_decoder": true,
	"sys":            true,
	"timers":         true,
	"tls":            true,
	"trace_events":   true,
	"tty":            true,
	"url":            true,
	"util":           true,
	"v8":             true,
	"vm":             true,
	"worker_threads": true,
	"zlib":           true,
}

type ResolveResult struct {
	Path       ast.Path
	IsExternal bool

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

	// If true, any ES6 imports to this file can be considered to have no side
	// effects. This means they should be removed if unused.
	IgnoreIfUnused bool

	// If true, the class field transform should use Object.defineProperty().
	StrictClassFields bool
}

type Resolver interface {
	Resolve(sourceDir string, importPath string) *ResolveResult
	ResolveAbs(absPath string) *ResolveResult
	PrettyPath(path string) string
}