feat(ext/fetch): Allow Response status 101 (#13969)

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

2 files changed, 8 insertions, 4 deletions

diff --git a/cli/tests/unit/fetch_test.ts b/cli/tests/unit/fetch_test.ts
index 3b2d765a5..bfd5bc991 100644
--- a/cli/tests/unit/fetch_test.ts
+++ b/cli/tests/unit/fetch_test.ts
@@ -970,7 +970,7 @@ Deno.test(function fetchResponseConstructorNullBody() {
 });
 
 Deno.test(function fetchResponseConstructorInvalidStatus() {
-  const invalidStatus = [101, 600, 199, null, "", NaN];
+  const invalidStatus = [100, 600, 199, null, "", NaN];
 
   for (const status of invalidStatus) {
     try {
@@ -980,7 +980,11 @@ Deno.test(function fetchResponseConstructorInvalidStatus() {
       fail(`Invalid status: ${status}`);
     } catch (e) {
       assert(e instanceof RangeError);
-      assert(e.message.endsWith("is outside the range [200, 599]."));
+      assert(
+        e.message.endsWith(
+          "is not equal to 101 and outside the range [200, 599].",
+        ),
+      );
     }
   }
 });
diff --git a/ext/fetch/23_response.js b/ext/fetch/23_response.js
index 4dc56dd8f..03f8c276b 100644
--- a/ext/fetch/23_response.js
+++ b/ext/fetch/23_response.js
@@ -265,9 +265,9 @@
         context: "Argument 2",
       });
 
-      if (init.status < 200 || init.status > 599) {
+      if ((init.status < 200 || init.status > 599) && init.status != 101) {
         throw new RangeError(
-          `The status provided (${init.status}) is outside the range [200, 599].`,
+          `The status provided (${init.status}) is not equal to 101 and outside the range [200, 599].`,
         );
       }