simulator org.eclipse.wst.common.project.facet.core.builder org.eclipse.wst.validation.validationbuilder org.eclipse.ui.externaltools.ExternalToolBuilder auto,full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/build.launch org.eclipse.wst.common.project.facet.core.nature org.eclipse.wst.common.modulecore.ModuleCoreNature org.eclipse.wst.jsdt.core.jsNature