Serve NaN and Infinity scripts with a JavaScript MIME type
Those scripts are being loaded by shared worker tests (workers/constructors/SharedWorker/Infinity-arguments.html
and workers/constructors/SharedWorker/NaN-arguments.html). As per the specification [1], the worker script load
script should only succeed if the MIME type is a JavaScript MIME type.
[1] https://html.spec.whatwg.org/multipage/webappapis.html#fetch-a-classic-worker-imported-script (step 5)
diff --git a/workers/constructors/SharedWorker/Infinity.headers b/workers/constructors/SharedWorker/Infinity.headers
new file mode 100644
index 0000000..6805c32
--- /dev/null
+++ b/workers/constructors/SharedWorker/Infinity.headers
@@ -0,0 +1 @@
+Content-Type: text/javascript; charset=utf-8
diff --git a/workers/constructors/SharedWorker/NaN.headers b/workers/constructors/SharedWorker/NaN.headers
new file mode 100644
index 0000000..6805c32
--- /dev/null
+++ b/workers/constructors/SharedWorker/NaN.headers
@@ -0,0 +1 @@
+Content-Type: text/javascript; charset=utf-8
