2 files changed, 4 insertions, 4 deletions
diff --git a/ext/web/00_infra.js b/ext/web/00_infra.js
index e42f2cc93..4b241ab5d 100644
--- a/ext/web/00_infra.js
+++ b/ext/web/00_infra.js
@@ -133,7 +133,7 @@ function regexMatcher(chars) {
       );
       return `\\u${a}-\\u${b}`;
     } else {
-      throw TypeError("unreachable");
+      throw new TypeError("unreachable");
     }
   });
   return ArrayPrototypeJoin(matchers, "");
diff --git a/ext/web/06_streams.js b/ext/web/06_streams.js
index 130b24783..3da3fe36c 100644
--- a/ext/web/06_streams.js
+++ b/ext/web/06_streams.js
@@ -524,10 +524,10 @@ function dequeueValue(container) {
 function enqueueValueWithSize(container, value, size) {
   assert(container[_queue] && typeof container[_queueTotalSize] === "number");
   if (isNonNegativeNumber(size) === false) {
-    throw RangeError("chunk size isn't a positive number");
+    throw new RangeError("chunk size isn't a positive number");
   }
   if (size === Infinity) {
-    throw RangeError("chunk size is invalid");
+    throw new RangeError("chunk size is invalid");
   }
   container[_queue].enqueue({ value, size });
   container[_queueTotalSize] += size;
@@ -543,7 +543,7 @@ function extractHighWaterMark(strategy, defaultHWM) {
   }
   const highWaterMark = strategy.highWaterMark;
   if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {
-    throw RangeError(
+    throw new RangeError(
       `Expected highWaterMark to be a positive number or Infinity, got "${highWaterMark}".`,
     );
   }