Change opcode to text for websocket

This means that we can see the json in chrome to debug it.

Change-Id: I74394367bba4fbafcef1c3b929f34d470ab1da92
diff --git a/.bazelrc b/.bazelrc
index 57f01ea..1318580 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -76,6 +76,8 @@
 build --spawn_strategy=linux-sandbox
 build --experimental_sandbox_default_allow_network=false
 
+build --strategy=TypeScriptCompile=worker --strategy=AngularTemplateCompile=worker
+
 # Use our hermetic JDK.
 # Note that this doesn't quite work fully, but it should. See
 # https://github.com/bazelbuild/bazel/issues/6341 for ongoing discussion with