From 32577d13c77dbfed08b0d4975b3666a5a38cbe3a Mon Sep 17 00:00:00 2001
From: Mihail Stoykov <M.Stoikov@gmail.com>
Date: Wed, 13 Jan 2021 16:31:55 +0200
Subject: [PATCH 1/2] We actually need to disable sourceMaps when we compile
 them as well

---
 js/compiler/compiler.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/compiler/compiler.go b/js/compiler/compiler.go
index f72de6a8175..8eaafd5f2a6 100644
--- a/js/compiler/compiler.go
+++ b/js/compiler/compiler.go
@@ -74,7 +74,7 @@ func (c *Compiler) Transform(src, filename string) (code string, srcmap *SourceM
 func (c *Compiler) Compile(src, filename, pre, post string,
 	strict bool, compatMode lib.CompatibilityMode) (*goja.Program, string, error) {
 	code := pre + src + post
-	ast, err := parser.ParseFile(nil, filename, code, 0)
+	ast, err := parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps)
 	if err != nil {
 		if compatMode == lib.CompatibilityModeExtended {
 			code, _, err = c.Transform(src, filename)

From 73e38633f2bf8c065ebc464f5e2d21de32c39046 Mon Sep 17 00:00:00 2001
From: Mihail Stoykov <M.Stoikov@gmail.com>
Date: Wed, 13 Jan 2021 17:09:44 +0200
Subject: [PATCH 2/2] Add a simple test to check sourcemaps are disabled

---
 js/module_loading_test.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/js/module_loading_test.go b/js/module_loading_test.go
index 9516b6636dd..fa82d70f850 100644
--- a/js/module_loading_test.go
+++ b/js/module_loading_test.go
@@ -493,3 +493,36 @@ func TestLoadingUnexistingModuleDoesntPanic(t *testing.T) {
 		})
 	}
 }
+
+func TestLoadingSourceMapsDoesntErrorOut(t *testing.T) {
+	fs := afero.NewMemMapFs()
+	data := `exports.default = function() {}
+//# sourceMappingURL=test.min.js.map`
+	require.NoError(t, afero.WriteFile(fs, "/script.js", []byte(data), 0o644))
+	r1, err := getSimpleRunner(t, "/script.js", data, fs)
+	require.NoError(t, err)
+
+	arc := r1.MakeArchive()
+	buf := &bytes.Buffer{}
+	require.NoError(t, arc.Write(buf))
+	arc, err = lib.ReadArchive(buf)
+	require.NoError(t, err)
+	r2, err := NewFromArchive(testutils.NewLogger(t), arc, lib.RuntimeOptions{})
+	require.NoError(t, err)
+
+	runners := map[string]*Runner{"Source": r1, "Archive": r2}
+	for name, r := range runners {
+		r := r
+		t.Run(name, func(t *testing.T) {
+			ch := newDevNullSampleChannel()
+			defer close(ch)
+			initVU, err := r.NewVU(1, ch)
+			require.NoError(t, err)
+			ctx, cancel := context.WithCancel(context.Background())
+			defer cancel()
+			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})
+			err = vu.RunOnce()
+			require.NoError(t, err)
+		})
+	}
+}