From 9db35b6d9683aa0ee612ce3e079c5560bce6acf8 Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Thu, 21 Nov 2024 14:36:09 -0800
Subject: [PATCH 1/3] Add test that verifies all of TS parses

---
 internal/compiler/parser_test.go | 43 ++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/internal/compiler/parser_test.go b/internal/compiler/parser_test.go
index 880dc6834b..6bb4900cda 100644
--- a/internal/compiler/parser_test.go
+++ b/internal/compiler/parser_test.go
@@ -1,9 +1,15 @@
 package compiler
 
 import (
+	"io/fs"
+	"os"
+	"path/filepath"
 	"testing"
 
 	"github.com/microsoft/typescript-go/internal/core"
+	"github.com/microsoft/typescript-go/internal/repo"
+	"github.com/microsoft/typescript-go/internal/tspath"
+	"gotest.tools/v3/assert"
 )
 
 func BenchmarkParse(b *testing.B) {
@@ -20,3 +26,40 @@ func BenchmarkParse(b *testing.B) {
 		})
 	}
 }
+
+func TestParseTypeScriptSrc(t *testing.T) {
+	t.Parallel()
+
+	srcDir := filepath.Join(repo.TypeScriptSubmodulePath, "src")
+
+	err := filepath.WalkDir(srcDir, func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if d.IsDir() {
+			return nil
+		}
+
+		if ext := tspath.TryExtractTSExtension(path); ext == "" {
+			return nil
+		}
+
+		testName, err := filepath.Rel(srcDir, path)
+		assert.NilError(t, err)
+		testName = filepath.ToSlash(testName)
+
+		t.Run(testName, func(t *testing.T) {
+			t.Parallel()
+
+			sourceText, err := os.ReadFile(path)
+			assert.NilError(t, err)
+
+			sourceFile := ParseSourceFile(path, string(sourceText), core.ScriptTargetESNext)
+			assert.Equal(t, len(sourceFile.Diagnostics()), 0)
+		})
+
+		return nil
+	})
+	assert.NilError(t, err)
+}

From 9289724cc04cbfa2c6014e1ed4c527cd6429d7ae Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Thu, 21 Nov 2024 14:49:09 -0800
Subject: [PATCH 2/3] Skip

---
 internal/compiler/parser_test.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/internal/compiler/parser_test.go b/internal/compiler/parser_test.go
index 6bb4900cda..16f78cd0d9 100644
--- a/internal/compiler/parser_test.go
+++ b/internal/compiler/parser_test.go
@@ -32,6 +32,10 @@ func TestParseTypeScriptSrc(t *testing.T) {
 
 	srcDir := filepath.Join(repo.TypeScriptSubmodulePath, "src")
 
+	if _, err := os.Stat(srcDir); os.IsNotExist(err) {
+		t.Skipf("TypeScript submodule not found at %s", srcDir)
+	}
+
 	err := filepath.WalkDir(srcDir, func(path string, d fs.DirEntry, err error) error {
 		if err != nil {
 			return err

From 53fc873ae0522bd559a8ec898d1095db9afcf69d Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Thu, 21 Nov 2024 14:51:55 -0800
Subject: [PATCH 3/3] Simplify

---
 internal/compiler/parser_test.go | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/internal/compiler/parser_test.go b/internal/compiler/parser_test.go
index 16f78cd0d9..ad06ebf025 100644
--- a/internal/compiler/parser_test.go
+++ b/internal/compiler/parser_test.go
@@ -41,11 +41,7 @@ func TestParseTypeScriptSrc(t *testing.T) {
 			return err
 		}
 
-		if d.IsDir() {
-			return nil
-		}
-
-		if ext := tspath.TryExtractTSExtension(path); ext == "" {
+		if d.IsDir() || tspath.TryExtractTSExtension(path) == "" {
 			return nil
 		}