fix(cli): fix panic in Deno.emit (#9302)

1 files changed, 13 insertions, 0 deletions

diff --git a/cli/tests/compiler_api_test.ts b/cli/tests/compiler_api_test.ts
index 17c02b0e5..99c7af961 100644
--- a/cli/tests/compiler_api_test.ts
+++ b/cli/tests/compiler_api_test.ts
@@ -292,3 +292,16 @@ Deno.test({
     assert(diagnostics[0].messageText.includes("This import is never used"));
   },
 });
+
+Deno.test({
+  name: "Deno.emit() - Unknown media type does not panic",
+  async fn() {
+    await assertThrowsAsync(async () => {
+      await Deno.emit("https://example.com/foo", {
+        sources: {
+          "https://example.com/foo": `let foo: string = "foo";`,
+        },
+      });
+    });
+  },
+});