diff --git a/microsoft/typescript-go b/microsoft/typescript-go
index c15e7649c..d9178cc1f 160000
--- a/microsoft/typescript-go
+++ b/microsoft/typescript-go
@@ -1 +1 @@
-Subproject commit c15e7649ca152ac52d424558abae7addd3f43801
+Subproject commit d9178cc1fef3cedc3c1a48a652e63dd83310ea20
diff --git a/pkg/checker/checker.go b/pkg/checker/checker.go
index 97d7cfc06..5e5f08deb 100644
--- a/pkg/checker/checker.go
+++ b/pkg/checker/checker.go
@@ -2302,8 +2302,8 @@ func (c *Checker) checkSourceElementUnreachable(node *ast.Node) bool {
 
 	sourceFile := ast.GetSourceFileOfNode(node)
 
-	start := node.Pos()
-	end := node.End()
+	startNode := node
+	endNode := node
 
 	parent := node.Parent
 	if parent.CanHaveStatements() {
@@ -2333,14 +2333,14 @@ func (c *Checker) checkSourceElementUnreachable(node *ast.Node) bool {
 				c.reportedUnreachableNodes.Add(nextNode)
 			}
 
-			start = statements[first].Pos()
-			end = statements[last].End()
+			startNode = statements[first]
+			endNode = statements[last]
 		}
 	}
 
-	start = scanner.SkipTrivia(sourceFile.Text(), start)
+	start := scanner.GetTokenPosOfNode(startNode, sourceFile, false /*includeJSDoc*/)
 
-	diagnostic := ast.NewDiagnostic(sourceFile, core.NewTextRange(start, end), diagnostics.Unreachable_code_detected)
+	diagnostic := ast.NewDiagnostic(sourceFile, core.NewTextRange(start, endNode.End()), diagnostics.Unreachable_code_detected)
 	c.addErrorOrSuggestion(c.compilerOptions.AllowUnreachableCode == core.TSFalse, diagnostic)
 
 	return true
diff --git a/pkg/pprof/pprof.go b/pkg/pprof/pprof.go
index 554e7110f..2523c9488 100644
--- a/pkg/pprof/pprof.go
+++ b/pkg/pprof/pprof.go
@@ -6,8 +6,6 @@ import (
 	"os"
 	"path/filepath"
 	"runtime/pprof"
-
-	"github.com/buke/typescript-go-internal/pkg/repo"
 )
 
 type ProfileSession struct {
@@ -63,12 +61,3 @@ func (p *ProfileSession) Stop() {
 	fmt.Fprintf(p.logWriter, "CPU profile: %v\n", p.cpuFilePath)
 	fmt.Fprintf(p.logWriter, "Memory profile: %v\n", p.memFilePath)
 }
-
-// ProfileInPprofDir is a convenience function that starts profiling in the 'pprof' directory under the repository root.
-// The resulting files are logged to stderr. It returns a function that stops the profiling when called.
-func ProfileInPprofDir() func() {
-	session := BeginProfiling(filepath.Join(repo.RootPath, "pprof"), os.Stderr)
-	return func() {
-		session.Stop()
-	}
-}