I don't know if anybody else is having this problem but I just got an update to the latest SDF plugin for webstorm. It broke the External Libraries for SS1 and 2 on current projects. All new projects are fine. To fix you have to load the .iml file in each "old" project (its in the .idea folder) and change two root lines from 2019.1.1 to 2019.1.2 so they will look like:
<root url="jar://$APPLICATION_PLUGINS_DIR$/com.netsuite.ide.webstorm.app/lib/com.netsuite.ide.webstorm.app_2019.1.2.jar!/library/SuiteScript_1_0" />
<root url="jar://$APPLICATION_PLUGINS_DIR$/com.netsuite.ide.webstorm.app/lib/com.netsuite.ide.webstorm.app_2019.1.2.jar!/library/SuiteScript_2_0" />