replace != by !==

src/components/map-layers/SidebarLayers.vue

src/components/project/ProjectMappingContextLayer.vue

src/services/project-api.js

src/store/index.js

src/store/modules/feature.js

src/store/modules/feature_type.js

src/store/modules/map.js

src/views/feature/Feature_edit.vue

src/views/feature/Feature_list.vue

src/views/project/Project_edit.vue