FlatNPMBundleProcessor fails when a module with no dependencies is scanned

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.0 DXP FP30, 7.0.X EE, 7.0.4 CE GA5, 7.1.X, Master
• Component/s: Frontend Infrastructure, Frontend Infrastructure > Module Loading
• Labels:
  • liferay-digital-enterprise-70-sp5
  • liferay-fixpack-de-30-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/50128

Steps to reproduce:

1. Startup Liferay 7 and wait it until initializes.
2. Deploy the attached JAR

 Expected behavior: no errors in log

 Actual behavior: an error from FlatNPMBundleProcessor is thrown:

java.lang.StringIndexOutOfBoundsException: String index out of range: 0
 at java.lang.String.charAt(String.java:658)
 at com.liferay.frontend.js.loader.modules.extender.npm.ModuleNameUtil.getPackageName(ModuleNameUtil.java:122)
 at com.liferay.frontend.js.loader.modules.extender.npm.model.JSModuleAdapter.<init>(JSModuleAdapter.java:61)
 at com.liferay.frontend.js.loader.modules.extender.npm.builtin.BuiltInJSModule.<init>(BuiltInJSModule.java:52)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.flat.FlatJSModule.<init>(FlatJSModule.java:47)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.flat.FlatNPMBundleProcessor._processModules(FlatNPMBundleProcessor.java:205)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.flat.FlatNPMBundleProcessor._processPackage(FlatNPMBundleProcessor.java:294)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.flat.FlatNPMBundleProcessor._processNodePackages(FlatNPMBundleProcessor.java:237)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.flat.FlatNPMBundleProcessor.process(FlatNPMBundleProcessor.java:74)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.NPMRegistry$NPMRegistryBundleTrackerCustomizer.addingBundle(NPMRegistry.java:251)
 at com.liferay.frontend.js.loader.modules.extender.internal.npm.NPMRegistry$NPMRegistryBundleTrackerCustomizer.addingBundle(NPMRegistry.java:245)
 at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)
 at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:1)
 at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
 at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
 at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)
 at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:905)
 at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
 at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
 at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:165)
 at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:75)
 at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:67)
 at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:102)
 at org.eclipse.osgi.container.Module.publishEvent(Module.java:461)
 at org.eclipse.osgi.container.Module.start(Module.java:452)
 at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454)
 at org.eclipse.osgi.container.ModuleContainer.applyDelta(ModuleContainer.java:717)
 at org.eclipse.osgi.container.ModuleContainer.resolveAndApply(ModuleContainer.java:491)
 at org.eclipse.osgi.container.ModuleContainer.resolve(ModuleContainer.java:437)
 at org.eclipse.osgi.container.ModuleContainer.refresh(ModuleContainer.java:955)
 at org.eclipse.osgi.container.ModuleContainer$ContainerWiring.dispatchEvent(ModuleContainer.java:1336)
 at org.eclipse.osgi.container.ModuleContainer$ContainerWiring.dispatchEvent(ModuleContainer.java:1)
 at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
 at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)