test(language-service): test @angular/language-service can be loaded by tsserver.js (#14721)

integration/language_service_plugin/scripts/install.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+set -ex -o pipefail
+
+cd `dirname $0`
+cd ..
+source scripts/env.sh
+
+# Setup TypeScripts
+for TYPESCRIPT in ${TYPESCRIPTS[@]}
+do
+  (
+    cd typescripts/$TYPESCRIPT
+    yarn
+  )
+done